31st INTERNATIONAL CONGRESS

OF PURE AND APPLIED CHEMISTRY

July 13-18, 1987

Sofia, Bulgaria

ABSTRACTS

of poster communications

VOLUME 1

SECTION 1: Analytical Chemistry

SECTION 2: Education

SECTION 5: Inorganic Chemistry ub/tibHannover 89

123 815 290

161

1 FLAME ATOMIC ABSORPTION SPECTROMETRY IN HIGH

PURITY PLATINUM ANALYSIS

Z. Anava, S. Arpadjan, S. Alaxandrov

S ANALYSIS OF THE APPLICABILITY OF THEORIES FOR

CALCULATING ACTIUITY COEFFICIENTS DN EQUILIBRIUM

STUDIES

J. Aparicin, M.P. Elizalds, J.M. Madariaga,

L . A. FarnandBz

3 THE INFLUENCE OF THE AQUEOUS PHASE ON THE EXTRAC¬

TION OF ZnCin FROM CHLDRIDE MEDIA BY TRILAURYL-

AMMONIUM CHLDRIDE DISSOLVED IN TOLUENE

J. ApariciD, M.P. ElizaldB, J.M. Madariaga,

L,A. Fernandez

4; CORRELATION BETWEEN IR-CHARACTERI5TIC UIBRATIONS

AND SDLUENT PARAMETERS

M. Arnaudov, U. Diakavich, L. Shishkava, M. Iliav

5 DETERMINATION OF MOLYBDENUM IN OBJECTS OF THE

MINING AND ORE-DRESSING INDUSTRY BY MEANS OF SOME

HETEROCYCLIC DITIOPHOSPHATES

D. Atanassova, A.M. Shishkav

B MULTICOMPDNENET ANALYSIS USING SETS OF

162

CALIBRATION MIXTURES

F. BabaliBvski

1. 7 THE OBSERVATION OF THE KINETICS OF THE FORMATION

OF MnCDjCS) AND MnD^CSi FROM THE SOLUTION OF

CARBDNAT BUFFER IN THE PRESENCE OF PHTALAT ION

M. Bacaj, A, Lajci

1. B BIOCHEMICAL APPLICATION DF HYDRIDE GENERATION

ATOMIC ABSORPTION SPECTROMETRY

C. Baluja-Santas, A. GanzalBZ-Partal

1. 3 ANALYTICAL TOXYCOLDBY FOR SCIENTISTS

C. Baluja-Santos, A, Gonzalez-Portal

1.

10 EC AND HPLC DETERMINATION DF ANILIDIC PESTICIDES

U. Bardarav, M. Mitava

1 .11 HPLC OF ALKYLPHDSPHATES

U. Bardarav

1. 12 DETERMINATION OF DETECTION LIMITS IN GRAPHITE

FURNACE ATDMIC ABSORPTION SPECTROMETRY BY USING

ENSEMBLE SUMMATION OF SIGNALS

A, Barzev,, . DohrHva, L. FutBnov, U. Rusbv

G, TDnava

I

163

1. 13 DETERMINATION OF IMPURITES IN GALLIUM ARSENIDE

BY ETA AAS

E. Bainrnhr, H. Hnfhauarnva, D. Bustin

1. 14 EMISSIDN-SPECTRDSCDPIC DETERMINATION OF TRACE

ELEMENTS IN SEA WATER AFTER PRECONCENTRATION ON

POLYMER LAYER

S. BBlchav, S, Arpadjan, E. Alaxandrnva,

R. Gecheva

1. 15 THE DETERMINATION DF STABILITY CONSTANTS AND

THERMODYNAMIC PARAMETERS OF GLYCOLAIE COMPLEXES

DF CADMIUMCIID

K. Berisha, Sh. Shkololli, E. Karakashi

1. IE PRECIPITATION AND COMPLEXATIDN OF ALUMINIUMCII15

ION WITH SOME CARBOXYLIC AND AMINO ACIDS

H. Eilinski, T. Himdan, B. Korea, S. JusuFi

1. 17 A IMOUEL ATMOSPHERIC PRESSURE RF PLASMA ATOMIZER

FHR ATDMIC ABSORPTION SPECTROSCOPY

M.W. BladBs, D.C. Liang

1. IB EXTRACTION-SPECTROFHOTOMETRIC DETERMINATION OF

RHENIUM IN CONCENTRATED SULPHURIC ACID

164

L.U. BorissDva, O.D. Prasalova

IS USE OF A "PRESERUING REAGENT" IN THE BACK

TITRATION. DETERMINATION DF PD, - WITH THE

SYSTEM BISMUTHCim-H-CS-PYRIDYLAZOJ-RESORCINOL -

EDTA

R. Barissova, A. Dabauki

50 INTERACTION BETWEEN RHENIUM AND DITHIOOXAMIDE

IN STRONGLY ALKALINE MEDIA IN THE PRESENCE OF

TI NCI ID CHLDRADE. ANALYTICAL APPLICATIONS

O.D. Bazhkav, L.U. Bnrissava, N. Jardarrav

51 HYBRID METHODS - EXTRACTION AND FLAI1E AAS FOR

DETERMINATION DF TRACE ELEMENTS' IN PLANTS

A. Brashnarova, L. Stanislavova

22 APPLICATION OF DECONUOLUTION UOLTAMHETRY IN

RESOLUTION OF CYANIDE LINKAGE ISOMERS DF CHROMIUM

IN REACTING MIXTURE

D. Bustin, M. RisvaJ

23 MICROELECTRODES IN ELECTROCHEMICAL ANALYSIS'

•

D. Bustin, M. RievaJ

24 APPLICATION OF ATOMIC ABSORPTION SPECTROMETRY AMD

165

EMISSION SPECTROGRAPHY TO THE ANALYSIS DF

PHOSPHORS

K. Chmialauska

25 GLOW DISCHARGE SPECTROMETRY ANALYSIS OF SILUER

ALLOYS

N.N. Christov, Y.H. Pacheva, S.M. Semov

2E NEUTRAL ATOMS - SPUTTERED CATHDDE GLOW DISCHARGE

SPECTROMETRY ANALYSIS

N.N. Christav

57 A NEW METHOD FDR THE DETERMINATION DF SULFOXIDES

BASED DN ITS REDUCTION WITH TRIFLUDROACETIC ANHYD¬

RIDE-SODIUM IODIDE SYSTEM

W, Ciesislski, J. Drabnwicz, W. JedrzajBuski,

Z.H. Kudzin

2S DETERMINATION DF COPPER IN THE PRESENCE OF A

LtARGE EXCESS OF BISMUTH BY DIFFERENTIAL PULSE

ANODIC STRIPPING UOLTAMETRY WITHOUT PRELIMINARY

SEPARATION

A. Ciszawski

2S FLAMELESS ELECTROTHERMAL AAS - METHOD FDR

DETERMINATION TRACES DF ALUMINUM IN BLDDD SERUM

E.S." Cohen

I6t

1. 30 METHODS FOR DETAINING AND ANALYSING THE SOIL

SOLUTION

J. Csillag

1. 31' SOME ELECTROMETRIC DETERMINATIONS OF PLATINUMC IU'J

BY THALLIUMCn

A.D. Dakashav

1. 32 OPTICAL ACTIVITY AND STABILITY OF COMPLEX

COMPOUNDS OF UCIin WITH L-ASPARTIC ACID,

L-GLUTAfllC ACID, L-ASPARGINE AND L-GLUTAMINE

M,A. Denleritzis, D. Kovala-Dsmertzi,

J.M. Tsangaris

CARBENIUM IONS AS OPTICAL SENSORS FOR TRACES OF

POLAR SOLUENTS

F.L. Dickart, S. Schrainar, 11. Unnand, G. riagss

E.M. Stich-Saumaiste

1. 34 METHOD FOR DETERMINATION OF ACETDCHLOR BY GAS

CHROMATOGRAPHY

G. Dimitrov, Ch. Zajkav, Y. Avraniavs

1. 35 COMPUTER - ASSISTED GRAPHICAL IDENTIFICATION IN

GAS CHROMATOGRAPHY

1. 33

167

N. Dimav, S. Bansva

3S GASCHROMATOGRAPHIC RELIABLE IDENTIFICATION

N. Dimov

37 INFORMATION CHANNELING: A NEW POSSIBILITY FOR

OPTIMIZING CDUPLED ENZYME ASSAYS

F. Dittrich, B. Neumann, fl. Schclz, K. Kopka

3B ELECTROTERMAL ATOMIC ABSORPTION DETERMINATION

OF TRACES OF As, Sb, Bi, Mn, Ni, Ss, Te AND Cr IN

HIGH PURITY CDPPER

D, Dobreva, A. Barzev, L. Futakov

3S THE APPLICATION OF THE DIFFERENTIAL UU-SPECTRO-

SCOPY METHOD IN THE INVESTIGATION OF THE ALKALINE

LIGNIN SDLUDLYSIS

M.I. Ermaknva, K.A. Savav, M. Kiryushina,

M. Zarubin

HO COMPLEXATIDN OF COPPERC113 WITH ERIOCHRDM CYANINE

R AND CATIONIC SURFACTANT'S

B , EvtimDva

41 STUDIES OF THREE-DIMENSIONAL FLAME SPECTROSCOPY.

I.ATOMS, IDNS AND MOLECULES -IN AIR-C..H. FLAME1 3.

168

H. FBng, C. Xianman, X. Ba

1. 42 STUDIES OF THREE-DIMENSIONAL FLAME SPECTROSCOPY.

II. MUTUAL INTERFERENCES DF I . ELEMENTS IN AIR-

CgHa .FLAME

H. Feng, L. Qunzhu, W. Zhi

1. 43 THE -INVESTIGATION DF THE WAY DF METAL-LIGAND

COORDINATION IN COMPLEXES OF RARE EARTH ELEMENTS

WITH 0-,M- AND P- NITROBENZDIC ACIDSr

hi, Fsrsnp, Ul. Brzyska

1. 44 AUTOMATED EQUILIBRIUM TITRATDR EASED ON A

MICROCOMPUTER AND SOFTWARE FDR EQUILIBRIUM AND

STADARDIZATIDN TITRATIONS

•Z, Fischerova, J, Havsl

1. 45 GAS-LIQUID CHROMATOGRAPHIC ANALYSIS OF METAMITRON

RESIDUES IN ALTHAEA ROSEA CAV. UAR. NIGRA AND •

ALTHAEA OFFICINALIS L. AS WELL AS-IN THE SDIL . .

B. GnusDuiski

1. 46 KINETICS AND MECHANISM OF THE CERIUMCIVJ OXIDATION

OF TARTARIC ACID IN H^SD^- HCID^ MEDIA

A. Gdcmen, A.S. Sarac

169

1. 47 SPECTROPHOTOMETRY DETERMINATION DF VANADIUM AND

IRON WITH N-CH-ACETAMIDCO IMINODIACETIC ACID

A. GDnzalBZ-PDrtal, S. Rajn-RocamondB,

C. Baluja-Santos

1. 4B ELECTROCHEMICAL CHARACTERIZATION DF SOLIDS IN

MATERIALS RESEARCH

W. Grunar, J. Kunath, E. SchanBich, R, Stahlberg

1. 43 THIN LAYER CHROMATOGRAPHIC SEPARATION OF SOME

METALS DN SILICA GEL LAYERS IMPREGNATED WITH

PHENOLIC ACIDS

0. Hadzija, M, Tnnkavic, S. Iskric

1.- 50 NEW LIQIUD MEMBRANE ELECTRODES FDR SELECTIVE

DETERMINATION OF NICOTINE IN TOEACCO PRODUCTS

S.S.I'I Hassan

1. 51 SPECTROPHOTOMETRY MICRODETERMINATIDN OF BISMUTH

IN DRGANDBISMUTH COMPOUNDS AFTER OXYGEN FLASK

COMBUSTION

M.E.M Hassauna, H.N.A Hassan, Y.A. Gawargious

1. 52 ATOMISATION DF PHOSPHDRUS IN GRAPHITE FURNACE

I. Havazav, E, Russeua

170

53 ELECTROTHERMAL ATOMIC ABSORPTION DETERMINATION

DF TRACES DF Sh. Ei AND Sn IN HIGH-PURITY TUNGSTEN

TRIDXIOE

I. Havszov, N. JordanQv, H. Ortner

54 REACTIONS DF URANYL-SULPHATE AND -CHLORIDE WITH

SOME ORGANIC LIGANDS

W.S, HBga2i, M.A. UassBF, S.A. Ali

55 GRAPHITE FURNACE AA5 WITH REDUCED PALLADIUM

MATRIX MODIFIER

H.J. Hainrich, G. Emrich

5B ANALYSIS OF Cu AND Fb IN GALLIUM ARSENIDE BY

STRIPPING UDLTAMUETRY

H. HnFbauarava, E. Bainrahr, D. Bustin, J. lineal:

5" FLOW INJECTION ANALYSIS DF CdCin WITH UDLT

AI1PERDMETRIC DETECTION

L. IlchBva, N. Elsnkova, Z, DsncbBv

5B FLOW INJECTION ANALYSIS OF Ca(II) IN THE PRESENCE

DF PHOSPHATE

L. IlchBva, T. GsnrgiBva

-7 -Y-I1 I I

1. 59 RriPEROIIETRIC DETECTOR FDR GLUCDSE DETERMINATION IN

FLOW INJECTION ANALYSIS FOR LABORATORY USE

L. Ilcheva, K. Cammann, T. Weiss

1. BO EFFECT OF AUDITION OF MAIN IDN TO CARRIER SOLUTION

IN FLOW INJECTION POTENTIDMETRY WITH ION-SELECTIVE

ELECTRODES

L. Ilcheva, 11. Tra]anau)icz, T. Krawczyk

1. El USE OF ATOMIC ABSORPTION SPECTROMETRY IN THE

I1ICR0TRACE ANALYSIS OF HIGH-PURITY SELENIUM

E. Ivanova, I. Havezov, N, Jordanav

1. 62 SPECTROFLUOROMETRIC DETERMINATION DF MICROAMOUNTS

DF WCVI'J AND MdCVI:i IN CONCENTRATED BRINES

F. Jasim, M. AFFan

1. S3 EXPERIENCES AND KNOWLEDGE WITH RESPECTS TD

SAMPLING IN TREATING POTASH CRUDE SALTS

LU. Johl

1. 64 FT - IR SPECTROSCOPY WITH POLARIZED RADIATION

B. Jordanav, D. Tsankav, D, KdIbv

1. 65 AAS DETERMINATION OF TRACES OF Na, K, Ca, Mg, Bi,

Cd, Co, Cu, Fa, In, Ni, Mn, Sb, Te, Tl, V, Sn, Sa

AND Mo IN AMMONIUM PERRHENATE OF 4N, 5N AND 6N

PURITY GRADE

N. Jordanov, I, Havazav, D. Eozhkav

BS STRUCTURE AND INFRARED SPECTRA DF ANION - RADICALS

AND DI ANIDNS OF ARYLISOCYANIDES

I. Juchnnvski, J, TsBnov, E. Velchsva .

57 STRUCTURE AND INFRARED SPECTRA DF .ARYLISOCYANIDES

I. Juchnnvski, J. TsBnov, U. Juntsin

58 INVESTIGATION OF THE SUBSTITUTION REACTION

PRODUCTS BETWEEN THE HEXANITRDCOBALTATECI11 .l-IDN

AND THE S-ASPARAGIN, AS LIKE 5-ASFARTIC ACID

B.A. Kambari, M.F, Kambari

S3 THE PHOTOMETRIC DETERMINATION OF COPPER BY

PICRAMIN-EPSILON IN SAMPLE OF THE KOSDVD OXIDE-

SILICATE ORE OF NICKEL, SLAG DF CRUDE AND READY

FERRONICKEL FbNi 20 LOW C TYPE

E. Karakashi, Y, Bujupi

70 C0I1PLEX0METRIC DETERMINATION OF STRONTIUM AND

CALCIUM IN THEIR SIMULTANEOUS PRESENCE

A. Karalav

175

1. 71 PULSE POLAROGRAPHIC STUDIES AND DETERMINATION

OF THIA20LIDINES

Z.J. Karpinski, J. Radomski

1. 72 HYDRAZONES-FORMING REACTIONS IN THE POLAROGRAPHIC

ANALYSIS OF KETONES

K,U. Khannhav, Y.I. Turyan

1. 73 PRECISE ELECTROCHEMICAL ANALYSIS OF COMPOUND

SEMICONDUCTORS OF A, B. TYPE

0. Kharitnnava, 5. GrazhulBHB, R. Kuharkavski,

S.A. Polujanava

N.N, Shilkina

1. 74 MULTI-ELEMENT DETERMINATION OF' TRACE ELEMENTS IN

WATER BY DIFFERENTIAL PULSE STRIPPING'VOLTAMIIETRY

Z. Komy, E. Roekens, R. Van Grieksn

1. 75 DROPPING ELECTRODE CHRONDAMPERONETRY WITH LINEAR

POTENTIAL SWEEP FOR DETERMINATION OF ANTIMONY

TRACE IN NQNFERROUS METAL ALLOYS

L.S. Kopanskaya, I.I. Vataman, V.A. SmBlov

1. 7G KINETIC DETERMINATION OF RHENIUM BASED DN REACTION

OF DIPHENYLAMINE OXIDATION BY HYDROXYLAMINE

INDUCED BY NITRATE IDN

M.V. Koroleva, L.U. Borispva, A.K. Chibisav

174

1. 77 CERTAIN ASPECTS DF THE DIRECT LIQUID SCINTILLATION

MEASUREMENTS OF C LABELLED ETHANOL

K.N. Kostadinov, Y.L. YanBV, P. Fador-Csnyi

1. 7S PERSONAL MONITORING OF INHALATDRY EXPOSURE TO

STYRENE DURING GLASS-FIBRE PLASTICS PRODUCTION

M. Kastava, N. Banav, Z. Zaprianav, U. Risov

1. 73 TOTAL ANALYSES OF GEOLOGICAL MATERIALS, GLASSES

AND OXIDES BY THE SSMS METHOD AND BY SOLUTION

METHDDS

E. Kowalczyk, J. Bukouiski

1. BO THE APPLICATION DF THALLIUMC III .1 IONS IN OXIDI¬

METRY DETERMINATIONS. I SPECTROFDTOMETRIC DETER¬

MINATION OF MICRDBRAMME AMOUNTS.DF CYSTEINE

E. Kubaszauiski

1. Bl ANALYSIS OF SEMICONDUCTOR SILICON BY NUCLEAR

METHDDS

B.S, Kudinov, G.I. AlBxandrova, V.I. Firsav,

M.N. Shtchulepnikav

1. B2 ELECTROCATALYSIS AT PDLYNUCLEAR RUTHENIUM-DXIDE/

CYANDRUTHENATE COMPOSITE MODIFIED ELECTRODES

12

175

P.J. KulBSza

S3 IMPROVED SELF-CLEANING ROTATING DISC ELECTODE

I. Kulev, D. Stansv, K. Christov

84 APPLICATION OF DC-3-GLUCONIC ACID FOR POLARIMETRIC

DETERMINATION DF OPTICALLY INACTIVE SUBSTANCES

I. Kulav, E. Kuleva, E. Uelcheva, D, StanBv

BS 4.H NMR SPECTROSCOPIC ANALYSIS OF ASPHALTENES

RESULTING IN COAL LIQUEFACTION

L. LazarDV, M. StsFanova

BS ELECTRON MICROSCOPIC INVESTIGATION OF THE SURFACE

DF DIATOMITE SUPPORTS DEACTIVATED BY DEEP ACID

WASHING AND POLYMER LAYER

K. Laknva, M, Bnursukova, S. Russeva

87 DETERMINATION DF MICROAMOUNTS DF METAL IONS BY

CHELATING RESIN COLDRIMETRY

C.Y. Liu, H.T. Chang, L.J. Uang

BB DETERMINATION OF HEAUY METALS IN SOIL AND SOIL

SOLUTIONS AFFECTED BY INDUSTRIAL WASTE MATERIALS

A. Lukacs., E. Molnar, D. Partay, T. Patkai

176

1. BS SOLID CONTACT MEMBRANE ELECTRODES

M.M. Mansurov, B,L. SBmyanova, K.M, Yakubov

1. SO EXPRESS POTENTIOMETRIC METHDD OF CONTROLLING

MERCURY PURITY

R.N. Matacova, B.M. Zhumagalieva, A.I. Zebreva

1. SI FLUORIMETRIC DETERMINATION DF CALCIUM IN SERUM

WITH CALCEIN BLUE

K.A. Matsoukas, M.A. DsmBrtzis

1. 92 ACID VAPOUR PHASE DISSOLUTION PROCEDURE FDR

ATOMIC SPECTROMETRY ANALYSIS

H.Matusiauiicz

1. 93 CRITERIA FOR EVALUATION OF "COST TO BENEFIT"

RATIO FOR COAXIAL P-TYPE HIGH PURITY GERMANIUM

DETECTORS

V. Mavmdiev, Y. Yanev, K. KDStadinov

1. 94 POLAROGRAPHIC BEHAVIOUR OF THE VOLATILE

HALOGENATED HYDRDCARBDNS

A. Meysr, G. HanzB

1. 95 ACETATE COMPLEXES OF LANTHANUM AND CERUIM IN

17 7

AQUEUOS SOLUTIONS

H.M. Mihailova, U.Ts, Mihailova

1. 96 ANALYTICAL APPLICATION OF SPECTROCDULOMETRY

J.'Mocak, M. Nameth, J. zak, P. Polak

1. 97 AMALGAM FORMATION AT THE SURFACE OF THE MERCURY

GRAPHITE ELECTRODE IN STRIPPING VDLTAMMETRY.

N.A. Mnldijarova, R.N. Matacova, R. Zholdibasva

1. 9B GAS CHROMATOGRAPHIC ANALYSIS OF THE PRODUCTS OF

O-XYLENE OXIDATION

M. MoscDvkina, St. Slavov

1. 99 THE INTERPRETATION DF SDIL-PH AFTER ACID

TITRATION

A. Muranyi

1.100 SPECTROPHOTDMETRIC DETERMINATION OF BISMUTH WITH

SEMI-XYLENOL DRANGE

Z. Nan, R,-D. Yu, X.-Z. Yao, Z.-R. Lu

1.101 A CHOICE OF CONDITIONS FDR ACID - BASE TITRATION

T. NedBlchava, N. Elankova, L. Kastadinnva

178

1.102 METHDD FOR SIMULTANEOUS DETERMINATION DF

DRGANOPHDSPHORUS PESTICIDES WITH THE USE OF GAS-

LIQUID CHROMATOGRAPHY

A. Naichava, E. KavachBva, G. harudav

1.103 ON THE RESPONSE MECHANISM OF TWO HOMOGENEOUS

SOLID ~ STATE SELENIDE SENSORS FOR CQPPERdI.1

M. Nsshkava

1.104 INVESTIGATION OF SOLIDS HOMOGENEITY BY MEANS OF

LASER MICROANALYSIS

L. Nikalova, N. Krasnabasva

1.105 EXTRACTION-SPECTROPHOTOMETRIC QF CDPPERCII.i IN

WASTE WATERS WITH 4-C2-PYRIOYLAZa.iRES0RCINDLCPAR.i

IN THE PRESENCE DF A LONG-CHAIN QUATERNARY

AMMONIUM SALT

D. Nonova, K. Stoyanov

1.106 MULTIOPERATIONAL SEALED AUTOMATED SYSTEMS FOR THE

ANALYSIS OF HIGH-PURE OBJECTS OF RARE METAL- AND

SEMICONDUCTOR INDUSTRY

V.A. Orlnva, Yu.A. Karpnv

1.107 INDICATOR TUBES FOR ETHYL BENZENE AND XYLENE

N. Panova, V. UBlichkova, P. KolkDvski, V. Zlatin

179

1.10B COMPLEX INSTRUMENTAL ANALYTICAL STUDIES IN

ENVIRDUMENTAL RESEARCH

G. Partay, T. Patkai, A. Lukacs, E. Molnar

1.109 EXAMINATION ON THE MATERIAL COMPOSITION OF SOME

METEORITES SHOT DN THE BALKAN PENINSULA REGION

A. PBtrakiav, SI. Mankav, L. Guearguava,

Tz. Kamsnnva

St. Atanasov, L. Alsxieva

1.110 SEPARATION AND QUANTITATIVE DETERMINATION OF. 'I,

4?I aRid °3".i MICRD-CONTAMINANTS IN MD-FIS3IDN

PRODUCTS BY DISTILATION METHOD.I.SPECIAL APPARATUS

FOR RADIOIDDINE MICRO-CONTAMINANT DISTILATION

K.U. PorazhanDV, G. WagnBr,' K. Thisms, P. Eichlar

Hi1.111 SEPARATION AND QUANTITAVE DETERMINATION DF I,

434 rf33 99

I AND I MICRDCONTAMINANTS IN 'MD-FISSDN

PRODUCTS BY DISTILATIDN METHOD. II. RADIOCHEMICAL.

DISTILATION METHDD FOR DETERMINATION

K.U, Porazhanov, K. Thiame, P. Eichlar, G. WagnBr

43 i

1.112 SEPARATION AND QUANTITATIVE DETERMINATION OF I,iii Hi 89

I, 'I MICRO-COMTAMINANTS IN Mo-FISSION

PRODUCTS BY DISTILATION. III. EXPRESS ....

K.U. Fornzhanov, K. Theime, P. EichlBr, G. WagnBr

180

1.113 INVESTIGATION OF SOME FLUORIDES BEHAIVOUR IN

D. C. ARC IN DRDER ITS EMISSION SPECTRDGRAPHIC

SEPARATION AND DETERMINATION

Ch. Pravceva.,

Ts. Tsolov.,

A. Delijska

1.114 GENERAL ASPECTS DF ERRDR THEORY IN ANALYTICAL

CHEMISTRY

E.D. Prudnikov

1.115 ADVANCES AND PROSPECTS IN FLAME SPECTROMETRY

OF TRACES

E.D. Prudrukav

1.116 SPECTROPHOTOMETRY DETERMINATION OF CARBOFURAN,

BENDIDCARB AND CARBDSULFAN IN WATER

C.U. RajESwan, P.R. Naadu

1.117 RHENIUM AND MDLYBDENUM DETERMINATION USING THE

INVERSIDN-VOLTAMPERDMETRIC METHOD

V.T. KBsniknva

1.11B FORMATION OF MIXED LIGAND COMPLEXES BETWEEN

FBtim AND THE ACIDS MALDNIC AND 5-SULFOSALICYLIC

IN AQUEOUS SOLUTION

X. Ribas, V. Salvado, M. Valiente

181

1.11S CDMPLEX FORMATION BETWEEN Fail in AND CITRIC ACID

IN AQUEOUS SOLUTIONS

X. Ribas, V. Salvadn, II. Valiants

1.150 CDMPLEX FORMATION BETWEEN FeCI I I 5 AND MALDNIC ACID

OR 5-SULFOSALICYLIC ACID IN AQUEOUS SOLUTION

X. Ribas, V. Salvadn, M. UaliBnta

1.121 SIGNAL PROCESSING IN ATOMIC ABSORPTION

SPECTROMETRY

V. Rusev, L. Futaknv, G. Eakjarov, A. Earzev

1.122 GENETIC CORRELATION DF NATURAL GASES BY STABLE

ISOTOPIC STUDIES - CAMBAY EA'SIN, INDIA

I.P. Saxsna, A.K. Prakash

1.123 DETERMINATION OF TRIAZINE HERBICIDES IN SOIL EY

GAS CHROMATOGRAPHY AND THIN-LAYER CHROMATOGRAPHY

J. SchlossBrova

1.124 THE DETERMINATION OF STABILITY CONSTANTS AND

THERMODYNAMIC PARAMETERS OF GLYCERATE COMPLEXES OF

2INCCII3

Sh. Shknlnlli, K. Eatisha, E. Karakashi

1C2

1.155 RAPID EXAMINATION OF WORKING CONDITIONS EFFECTS

IN POTENTIDMETRY WITH ION-SELECTIVE ELECTRODES

V. SimBonav, A. Vnulgaropnulos

1.1SS A METHOD FOR QUANTITATIVE DECOMPOSITION OF

CLUSTER COMPOUNDS AND THE DETERMINATION OF

RHODIUM AND RUTHENIUM BY FLAME AAS

K. Smalandar, I, Mustonan, J, PursiainBn,

T. UBnalainBn

T.A. Pakkanan

1.127 SPECTROPHOTOMETRIC STUDY DF THE PRDTDNATIDN OF

SDME DICARBDXYLIC ACIDS

I. Spirevska, L. Soptrajanova

1.128 A NEW APPROACH FOR MAXIMA IDENTIFICATION IN

AUTOMATIC QUALITATIVE X-RAY FLUORESCENCE ANALYSIS

R. StBfanov, Ju. JDrdannv ., Ts. Tsannv

1.123 CYCLIC VOLTAMMETRY AT SUBMICRO MERCURY ELECTRODES.

PROCESSES INVOLVING AMALGAM FORMATION

Z. StajBk, M. Ciszknwska

1.130 CONDITIONS OF UNIFORM CURRENT DISTRIBUTION AT THE

DISC SUBMICRDELECTRDDES

Z. StojBk, M. pBnczBk

183

1.131 QUANTITATIVE ANALYSIS DF MEXILETINE BY MEANS OF

THIN - LAYER SPECTRDDENSITDMETRY

S. Stayanov, N. Ealabanova, U. Kalchava

1.132 COMPLEX FORMATION AND DISTRIBUTION EQUILIBRIA

OF CERTAIN RARE EARTH METAL IONS WITH l-PHENYL-3-

METHYL-4-EENZDIL-PYRAZDL0NE-5

D .Czakis-SulikQiuska, B. Kuznik, A, Malinauska

1.133 COORDINATION COMPOUNDS OF INDIUNC111D WITH 4.4'-

BIPYRIDYL

D.Czakis-Sulikoujska, J. Doczekalska

1.134 DETERMINATION OF PLATINUM AND GOLD IN BIOLOGICAL

MATERIALS BY NEUTRON ACTIVATION ANALYSIS

E. Taskaev, D. ApDstolov

1.135 NEW SORBENTS FOR ANALYTICAL CHEMISTRY, CONTAINING

1-PHENYL-3-METHYLPYRAZ0LDNE-5

A. Terabsnina, D. Todorava, M. Poneva, N. Jordannv

G. Ilyasnsdava, N. SchBrbinina, S. Sawin

1.136 STUDIES OF MATRIX MODIFICATION IN ELECTROTHERMAL

ATOMIC ABSORPTION SPECTROMETRY

D.L. TsalBV, P.B. Mandjukov, U.I. Slaveykova,

K.N. StartchBV

iC<

1.137 APPLICATION OF THE REDUCTION REACTIONS OF MIXED

HETEROPDLYCDMPLEXES IN ANALYSIS

L.P, Tshyganak

1.13B THE QUATERNARY AMMONIUM SALTS IN THE EXTPACTICfl

ATOMIC ABSORPTION ANALYSIS OF TRACE ELEMENTS IN

HIGH PURITY NICKEL AND COBALT SALTS

E. Vasileva, S. Arpadjan. 5t. Ale>:androv

1.139 THE INFUENCE OF ADSORPTION OF TIAZINE DYEINGS

OF TIN DETERMINATION

I.I. Vataman, L.G. Kiriyak, A.V, Badyu, U.G. Russu

1.140 EPR STUDY ON THE STRUCTURE AND PROPERTIES OF

COPPERCIIJ COMPLEXES FORMED ON THE SURFACE OF THE

POLYMERIC MATRIX

B.

I., UBlohBva, N.D. Jordanov, I. JuchnQVski

1.141 LABORATORY AND INDUSTRIAL EVALUATION OF THE

"HYGITEST" INDICATOR TUBES BY OTHER ANALYTICAL

METHODS

U, VBlichkova, B. Mihailov, N. Bonev, N. Fanova

R. Vassilsva, P. Uardev, Zh. Daneva, R. Minkonska

1.142 TESTS FOR QUANTITATIVE DETERMINATION OF AMMONIA

1£5

IN WATERS, BIOLOGICAL LIQUIDS AND CDSMETICS

V. Valichkova, G. Mihailov, R. Vassilsva,

Iv. Eenchav

1.143 DORECT PDTENTIOMETRIC DETERMINATION DF

ETHYLENEDIAMINE

P.T. Ueltsistas, M.I. Karayannis

1.144 X-RAY FLUORESCENCE DETERMINATION DF PRE-EXTRACTED

INDIUM

A.I. Zebrava, L.U. Philipova, N.N. Andrasva.

N. I'.-Bnova

1.145 ORGANIC LUMINDPHORES AND THEIR APPLICATION IN

THE ANALYSIS

L.E, Zsltsar

1.146 CDIIPLEXONATES DF PLATINUMC11 } AND PALLADIUMC11 )

N.N. Zheligovskaya, L.R. Shchelokova

1.147 PHOTOCHEMICAL BEHAVIOUR OF BISCDITHIOPHOSPHATO)-

CDPPERCin AND BISCDITHIOCABAMATOnCOPPERC11)

COMPLEXES IN SOLUTION

B.D. ZhBlyszkova, N.D. Yordanov

1.148 ELECTRDCONCENTRATING METALS CHg ,Sb

,Au

, Ag!' IN

1U6

ULTRASDUND FIELD AT SDLID ELECTRODES

R,B. 2haldibaBva, K.N. Umarova, N.A. I'loldi larova,

R.N. Matakova

1.149 HIGH RESOLUTION SQUARE WAVE POLARDGRAPHY

R. Zlatav, M. StDychBLua

31st INTERNATIONAL CONGRESS

OF PURE AND APPLIED CHEMISTRY

July 13-18, 1987

Sofia, Bulgaria

SECTION 2: EDUCATION

ABSTRACTS OF POSTER

COMMUNICATIONS 2.1 - 2.3 2

35

NET OVERLAP AS A SIMPLIFIED CRITERION IN TEACHING

THE ENERGY LEVELS OF CYCLIC AND ACYCLIC pi SYSTEMS

F.M. Abdal Galil, Y.A. Ibrahim, A.M. Kadry

TEACHING MOLECULAR 6EDMETRY AT THE SECONDARY

SCHOOL

I.G . Binav

EDUCATIVE-RESEARCH LABORATORY DF CHEMISTRY AS A

UNTRADITIDNAL FORM OF EXTERNAL WORK

P. Banchav, Zv. ZhechBva, G. Ivanov

GENERATING CHEMICAL PROBLEMS

L. Bnyanova, B. Karahski, Kr. Dimitrova, D. Bayannva

ACHIEVING UNDERSTANDING IN SECONDARY SCHOOL

CHEMISTRY

J, Burns

36

6 INPROVEMENTS IN THE UNDERGRADUATE TEACHING OF

PROBLEM SOLVING THROUGH PHOTOCHEMISTRY

A.C. Cardoso, H.D. Burrow, M.G. Miguel

7 MODELLING THE POSTGRADUATE WORK OF CHEMISTRY

TEACHERS IN BULGARIA

L. Gankova, S. BBnBva

B POST-GRADUATE OF CHEMISTRY TEACHERS ON ECOLOGY

PROBLEM

L. Gankova

S METHOD FDR RESOLVING EDUCATIONAL TASKS IN HIGH

SCHOOLS

G.I. Gaorgisv

10 ONE POSSIBILITY FOR THE GENERATION OF THE SUMS

CTASKS) WITH THE HELP DF THE CDMPUTER OVER THE

STRUCTURE OF THE ATOMIC NUCLEUS

P. GBorgiBva, L. Boyanava, B. Krabaski, D*. Bayanova

11 OPPORTUNITIES FDR OPTIMISING THE TEACHING PROCESS

IN CHEMISTRY WHEN STUDYNB ION AND OXIDATION -

37

REDUCTION PROCESSES

E. E-Brgova, Z, MalchBva

12 THE UNITED KINGDOM PHD IN SCIENCE AND ENGINEERING

R.F. KBmpa ,, P.A. DnglBy

13 A NEW CHEMICAL EDUCATION FOR UIII-DEGREE DF ESPU

IN BULGARIA

K. Kostadinov, L, Bojanova, R. Maneva, E. Ziffudin

L. Kocheva

14 EDUCATION IN CHEMISTRY AT THE NATIONAL SCHOOL OF

MATHEMATICS AND NATURAL SCIENCES ,"ACAD .L .CHAKALDU"

L,A. KDstov

15 MAKING CHEMISTRY MORE ACCESSIBLE:CHEMISTRY AND

FOODS

B. Leon, M. Guzman

16 THE SUMMER CAMP-SCHOOL FDR CONSTRUCTIVE CONTACTS

DF SCIENTISTS WITH DEEP-INTERESTED IN CHEMISTRY

PUPILS

Z. MalchBva, Z. Zhaleva, G. Ivanav, Sh. Dinkov

38

17 MULTI-FUNCTIDNAL PROGRAMMES ON OXY-REDUCTION

PROCESSES FOR SECONDARY SCHOOLS

Z. MalchBva, D. Lazarav, M. Pavlova, Z. Kqbv

IB WHEN TO INTRODUCE STOICHIOMETRIC CALCULATIONS

UNDERGRADUATE STUDENTS

G> Marquina-Chidsa

19 THE INTEGRAL CENTRE AS A FDRM OF APPLYING THE

INTEGRAL APPROACH IN THE TEACHING CHEMISTRY

M. Minavska, D, Lazarnv

20 COMPUTER PROGRAM DN "ETHINE HYDROCARBONS"

V. Nikifirov, Z. Kqbv, M. KrastBva

21 ASSESSMENT DF STUDENTS

P.A. DnglBy

39

22 CONFIRMATION OF THE CONCEPT OF SPATIAL STRUCTURE

DF ORGANIC MOLECULES BY TRAINING IN CHEMISTRY IN

ESPU

E. Pachedgisva

23 CONTROLLING PROGRAMMES - FACTOR FDR FORMATION OF

ABILITY FOR SELF-CONTROL

M. Pavlova, D. Lazarav, Z. Malnheva

24 USE OF THE INUENTIVE METHOD"MDRPHDLDGICAL ANALYSIS

FDR INVESTIGATION FORMULATION AND SOLUTION OF

CHEMISTRY SCHDOL PROBLEMS

M. Pavlova, A. Krastav

25 CHEMISTRY FDR THE STUDENTS STUDYING OIL AND GAS

DUTPUT

D. Rakhmankulov, S. Zlatsky

26 SDME PROBLEMS OF THE USE OF IUPAC NOMENCLATURE

AND TERMINOLOGIES IN BRAZIL, KENYA AND UENEZUELA

AT SECONDARY SCHOOL LEVEL

G. RBbolleda, S. Muthuiii, J. SbIIbs

27 ON THE PROBLEM DF DIFERENTIATION IN CHEMISTRY

EDUCATION

31st INTERNATIONAL CONGRESS

OF PURE AND APPLIED CHEMISTRY

July 13-18, 1987

Sofia, Bulgaria

SECTION 5: INORGANIC CHEMISTRY

ABSTRACTS OF POSTER

COMMUNICATIONS 5.1 - 5.19 2

207

1 REACTIONS OF CYCLOPENTANE AND METHYLCYCLDPENTANE

AS A TEST FOR BRDNSTED ACTIVITY IN AN ACID

CATALYST

J. Abbot, B.W. WajciBchawski

B PREPARATION AND X-RAY DIFFRACTION STUDY OF THE

DEFFICIENT PYROCHLDRES ACSbTB)DS CA-K, Rb, Cs, Tl 'J

J.A. Alonsn, A. CastrD, I. RasinBS

3 THE SERIES DF CUBIC PYROCHLORES

Pbl.S+XCCr X Nb 2-X 305.5,0<-X<-0 .5

J.A, Alonso, E. Mzayak, I. Rasinas

4 PARTIAL SUBSTITUTION AT THE OCTAHEDRAL SUBLATTICE

DF NiCr204:STUDY DF THE CONTINUOUS SERIES DF

SPINELS NiCl+2S:CrC2-3S3SbCS:iD4 /0<S<0.33/

J. Amador, P. Casada, I. Rasinas

5 INFLUENCE OF SULFIDE IONS ON THE CRYSTALLIZATION

OF PRECIPITATED ZnS

S. Angelov, K. PBtrov, N. ManBva, K. Kynav

,*

6 HYDROGEN ABSORPTION IN CERIUM MISCHMETAL MmNiS

TYPE PSEUDOBYNARY INTERMETALLIC COMPOUNDS

A. Apostolov, L. Bazukov, N. StanBV, P. Tchalakav

40

A.Y. Sokolova, V. NikiForov, S. Uassilsva, P. Kutz

i

2B INTEGRAL APPROACH WITH TEACHING DF "METALLURGY"

SECTION IN 9-TH CLASS

D. Takova, V, Bogdanova

29 HIERARCHICAL TEACHING OF DESCRIPTIVE CHEMISTRY

G. Tsaparlis

30 CHEMISTS' RENEWED AND REORIENTED RDLES IN EDUCATID

AND DEVELOPMENT DF HUMAN RESDURCES

A. Uajpai, A. Roussst

31 DUT-OF-CLASS ACTIVITY ON " CHEMISTRY KNOWLEDGE AND

PRACTICE IN THE NATIVE REGION"'

K. VBlinava

32 MENTAL ATTITUDES IN MAKING UARIDUS POLYHEDRA

MODELS FROM BUSINESS ENVELOPE

S. Yarnana

208

7 ISOTHERMAL AND NON ISOTHERMAL THERMDGRAVII1ETRIC

DECOMPOSITION OF ANILINIUM DODECATUNGSTATE

CCEH5NH3J5HCH2W12040:i .DMF

A. Arnaiz, C. Santiago

9 THE ANGULAR QUERLAP MODEL FDR EXTENDED CHAIN

COMPLEXES

M. Atanasnv, H.-H. Schmidtka

9 EXCHANGE INTERACTIONS IN SIBMA-BDNDED TRANSITION

METAL CLUSTERS

M. Atanasov, S, Angelov, I, MayBr

10 DETAINING OF COBALT SPINEL FROM A BASIC COBALT

CARBONATE

L.K. Avramov, E.M. Spasova

11 SEMICONDUCTING METALDXIDE PHDTDANDDE:

ITS CHARACTERISTICS AND IMPLICATIONS

S.K. Bahador

12 INVESTIGATION OF SYSTEMS WITH DOUBLE SALTS AMONG

•CESIUM CHLORIDE AND THE CHLDRIDES OF BIUALENT

MANGANESE, COBALT AND CDPPER

Chr. BalarBui, S. Tapavicharova

208

7 ISDTHERI1AL AND NDN ISOTHERMAL THERM0GRAUII1ETRIC

DECOMPOSITION OF ANILINIUM DODECATUNGSTATE

i:C6H5NH3J5HCH2W12D40:i .DMF

A. Arnaiz, C. Santiago

a THE ANGULAR OVERLAP MODEL FDR EXTENDED CHAIN

COMPLEXES

M. Atanasov, H.-H. Schmidtks

9 EXCHANGE INTERACTIONS IN SIBMA-BDNDED TRANSITION

METAL CLUSTERS

M. Atanasov, S, Angelov, I. MayBr

10 DETAINING OF COBALT SPINEL FROM A BASIC COBALT

CARBONATE

L.K. Avramov, E.D. Spasova

11 SEMICONDUCTING METALDXIDE PHDTDANDDE:

ITS CHARACTERISTICS AND IMPLICATIONS

S.K. Bahador

12 INVESTIGATION OF SYSTEMS WITH DOUBLE SALTS AMONG

•CESIUM CHLDRIDE AND THE CHLDRIDES DF BIVALENT

MANGANESE, COBALT AND CDPPER

Chr. BalarBW, S. Tspavicharova

209

5. 13 ISOMORPHOUS MIXED' CRYSTALS ON THE BASES DF NICKEL

FORMATE DI HYDRATE

Chr. Balarsu, U. Vassileva

5. 14 RELATIONSHIP BETWEEN ELEMENT PROPERTIES

AND ELECTRON SHELL IONIZATION ENERGY

FORMULATED PERIODIC FUNCTIDN

Jia Baoliang

5. 15 SYNTHESIS OF SOME TRANSITION METAL COMPLEXES

DERIVED FRDM 1-CINNAM0YL-4-PHENYL-3-THI0SEMI-

CARBAZIDE

11. Bekheit, K. Ibrahim

5. IB PREPARING OF MIXTURES FOR A LIGHT'PERMEABLE

PDLYCRISTALLINE Y2D3

B. Bogdanav, I. Chamakov, G, Jnrdanpv, J. Iliev

5. 17 SYNTHESIS AND STRUCTURE OF CoCIin I1IXED-LIGAND

COMPLEXES WITH THIDSEMICARBAZIDEDIACETIC ACID

AND BI DENTATE LIGANDS

D. Baloga, I, Burshtsin, N, GerbBlau, V. Lozan

T. Malinousky

S. IB GROWTH DF SINGLE CRYSTALS DF SOME METAL CHALCOGE-

NIDES AND PHOSPHATES IN SILICA GELS

Z. Boncheva-MladBn

210

19 POROUS MONDCRYSTALLINE SILICON : FORMATION AND

PRDPERTIES

V. EondarBnko, A. Dorofeav, L. Tanulina

50 INTERACITDN OF CNH4D2SD4 AND FsS04 WITH METAL

OXIDES AND FERRITES

B. Boyanov

21 ON THE THERMAL DECOMPOSITION OF CaSi6.2H20

P. Bazajiav, V. Iordanov

22 THE STUDY DF METAL-OXIDE FILM STRUCTUTRES-MODELS

DF THE SURFACE LAYER OF THE SUPPORTED METAL

CATALYSTS

G.A. Branitsky, S.N, Malchanka

23 T E M INVESTIGATION OF THE CRYSTATLLIZATION

OF THE AMDRPHDUS ALLDY Ni75B25

S. Eudurov, T, Spassav, G, Ivanav

24 THE EFFECT OF THE KIND DF ANION ON THERMAL

DECOMPOSITION DF CRuCbpy)33XE PHOTOSENSITIZERS

Cbpy-2,2'-DIPIRYDYL; X-CL-, Br-, I-, NCS-,VD3-,Rb04-

FBC14-,l/ECCdC14JB-,l/2CCd3ClB35-3

A. Bu.iewski, J. Dobrnwoiswi,

211

25 A NEW SERIES DF SPINELS:CoCl+Bs3RhCH-3sDSbCs3D4

Q<-S<-0.67

C. CascalES, I, Rasinas

«

26 CHARACTERIZATION.DF THE OXIDE PYROCHLORES

Fb2CI1i:p3SbC2-p330B.5: THE INFLUENCE DF

THE NON-BONDED SsE-PAIR

C. Cascalss, I. Rasinas

57 EMISSION OF ZINC-EORIC LUMINESCENT SYSTEMS WITH

DIFFERENT ZINC OXIDE COMPOSITIONS

R.M. Dafinova

2S FAR I R SPECTRA AND MOLECULAR STRUCTURE DF Zn(II)

COMPLEXES OF 2-AMINOTHIAZOLES

K. Davarski, L. Knnavalov, J. Maoicsk, D. Davarska

29 REGULARITIES OF THE SURFACE CHEMISTRY

DF ORGANDSILICAS

T. Damsova, Y, Momot, I. Shaka, S. UalBshevich

30 EFFECT DF THE MODE FORMATION ON THE STRUCTURE DF

TELLURITE GLASSES

Y. DimitriEv, V, Dimitrov, E. Gatsff,

E. KashchiBva, Ch, Petkav

212

31_

THE INTERACTION OF AMMONIA WITH La-Ni ALLOYS

S. Dinkov, D. Lazarav

32 INFRARED SPECTROSCOPY STUDY DF ORGANIC MINERAL

FERTILIZERS AND.THE PRODUCTS DF THEIR DESTRUCTION

Tz. Dabrsva, S, Tzvakav

33 FORMATION OF MIXED CRYSTALS IN TERNARY SALTS-WATER

SYSTEMS AS A MODEL OF DESCRIPTION DF THE SECOND

ORDER PHASE TRANSITIONS

D. Draganova

34 CD-METAL SURFACE INTERACTION: RESULTS OF A MODEL

HAMILTONI AN STUDY

D. Drakova, G. Doyen

35 SYNERGISTIC SOLVENT EXTRACTION OF SOME

LANTHANOIDES WITH MIXTURES OF CHELATING EXTRACTANT

AND QUATERNARY AMMONIUM SALT

I.L. Dukov

36 INFLUENCE OF DONOR PROPERTIES DF NEUTRAL LIGANDS

UPDN THE CDORDlNAllDN SURROUNDINGS OF URANIUM

IN THE AMINE COMPLEXES OF URANYL CARBDXYLATES

X.M. Dunaeva, V.V. KnlEsnik, I.A. Yurannv

215

37 CRYSTALLOCHEMISTRY DF NiCII.1 COMPLEXES

WITH THIDSEMICARBAZIDE

M. DunaJ-Jurco, M. Mslnik, T. Sramko

30 COORDINATION COMPLEXES DERIVED FROM

1-CINNAMDYL-4-PHENYLSEMICARBAZIDECHCPS3

A.A. El-Asmy, A. Babaqi, Y. Shaibi, T. Al-Ansi

39 TRANSITION METAL COMPLEXES OF SUBSTITUTED

THIDSEMICARBAZIDE

A.A. El-Asmy

40 X-RAY INVESTIGATION OF GAMMA IRHADIATED

Ca3D4/A1203 SOLID

A.M. El-Shabiny, G.A. El-Shobaky, I.F. Hewaidy,

A.A. Ramadan

41 SYNTHESIS AND CHARACTERIZATION OF SINGLE CRYSTALS

OF MIXED CONDENSED PHOSPHATES MCI .12-Lni:PD335

M. Far id, N. Ariguib, II. Trabelsi-Ayadi

42 DEFECTIVE STRUCTURE IN SDLID SOLUTIONS

CaC3-3x-y-2z3LnC2x+z"JNaC5y+z)C3CxKVCl-a:'PCa:iD43 2

A.A. Fotiev, I.A. Leonidav, M.Y. Hodas

214

5. 43 MEW COMPOUNDS OF STRONTIUM AND LANTHANIDES

VANADITES WITH THE K5N1F4 STRUCTURE

V.A. Fatiav, G.V. Bazuev

5. 44 DN THE STRUCTURE OF BARIUM PERDXYTITANATE

L. Gennv, II, Mansva, V. Parvanova

5. 45 ELECTRIC CHARACTERISTICS INVESTIGATIONS ON FILMS

IN THE TaDa-LnOm SYSTEMS, UIHERE Ln IS A RARE EARTH

ELEMENT

I. Geargiava, D. Dimitrov, V. Kozhukharov

5. 46 INFLUENCE OF THE THERMAL TREATMENT ON THE

STRUCTURE OF SILICA - FIBRES ADSORBENT

D. Gogov, L, Ljubchev, G, BogDva

5. 47 POSSIBLE SELENITES AND SELENATES OF THE ELEMENTS

FRDN IE,I IB,IIA.IVA AND VA GROUPS OF THE PERIODIC

SYSTEM AND THEIR THERMAL DISSOCIATION

G.G. EDspodinov

5. 48 DN THE CONDITIONS OF 5SFs PRODUCTION IN THEEXPE-

RII1ENTAL NUCLEAR REACTDR IRT 2000 IN SOFIA

E.S. Gautava, P. Mushmov, P, Vodanicharav,

M. MihBilov

215

5. 49 ON THE KINETICS OF THE THERMDCHEMICAL

DECOMPOSITION' DF PHDSPHOGYPSUM'IN A REDUCING

GASEDUS MEDIUM

I. Gruncharov, P. Kirilov, Y. Pelnvski,

I , Dombalov

5. 50 COORDINATION STATES OF DIVALENT TRANSITION METAL

PERCHLORATES IN HMPA SDLUTIDN

U). Grzybkaujski, M. Pilarczyk, L. Klinszporn

5. 51 COPRECIPITATIDN DF COBALT WITH CALCIUM CARBONATE

DURING THE PREPARATION OF HIGH PURITY INORGANIC

SALTS

G. Gyulmszova

5. 5:2 COMPLEXES OF IRONCIin WITH SDME AMINDACIDS

STUDIED EY 57Fb MDSSBAUER SPECTROSCOPY

AND IR SPECTRA

D. Hanzel, H. Bilinski, T. Hadihimdan

5, 53 REACTIONS OF URANYL-SULPHATE AND -CHLORIDE

WITH SOME ORGANIC LIGANDS

W,S. HEgazi, M.A. WasssF, S.A. Ali

5, 54 NEW URANYLtVH COMPLEXES WITH DNS LIGAND

DERIVED FRDI'1 ALIPHATIC ACID HYDRAZIDES

216

AND PHENYL ISOTHIOCYANATE

K. Ibrahim, A. El-Bindary, M. MostaFa

55 THE CHARACTER OF FORMATION OF TERNARY COMPOUNDS

IN SYSTEMS DF THE TYPE Ln-As-X CLn-Eu,Yb,5m,Nd3

T. Ilyasov, L. Hamadova, G. Rustamov, G, NadzhaFov

S. Kirov

SB METHOD OF PREPARATION OF Cr2WDG-W03 SYSTEM AND ITS

REACTION ABILITY

K. Ivan'ov. T. Popov, S. Krastav

57 PRAPARATION OF SUPPORTED ON PUMICE Ag-Cu-Pd ALLOYS

AND THEIR ACTIVITY IN OXIDATION OF METHANOL

K, Ivanov, D. Lazarav, S. Manev, D. Hadjiev

53 CHEMICAL EDNDING IN ZYRCDNIUM HYDRIDES

A.L. Ivannvsky, V.A. Gubanov, D.L. Novikov

53 THE .COOPERATIVE JAN-TELLER ORDERING

IN BaFB2.5Mn3.5Dia

'

Z, Jirak, E. Ppllart

GO SPECTRDPHOTOMETRIC INVESTIGATION OF THE COMPLEX

FORMATION BETWEEN Pb2* AND NITRILTRIPRQPIONIC

ACID

217

B. Karadakov, II. Zakhaneva, Khr. Ivanova

61 SYNTHESIS AND CHARACTERIZATION DF ZnSe POWDER

DETAINED EY THE IDDIZATION METHOD

L. KaragiGzov, I. VassilBv

62 FORMATION OF HYDROGEN IDNS IN GO-COBALT GAMIIA

IRRADIATION DF N2D SATURATED ADUEDUS SOLUTIONS

OF BENZENE AND POTASSIUM FERRICYANIDE

I. Karaivanov, I. Pumpalov

53 CHARACTERIZATION OF HYDRDTREATING CATALYSTS

BY REVERSED-FLDW GAS CHROMATOGRAPHY

N.A, Katsanos

54 ELECTRON SPIN RE50NANCE AND ELECTRDN SPIN ECHD

STUDIES OF TRANSITION METAL IDNS DN OXIDE SURFACES

L. Kavan

65 COPPERCII) CATALYZED OXIDATION OF PROPYLENE DN X

AND Y TYPE ZEOLITES: OBSERVATION DF CuCIH MIGRA¬

TION BY ELECTRON SPIN RESONANCE DURING AND AFTER

REACTIDN

L. Kavan, H. Lea, Jong-sung Yu

SB P - OXYEENZDATES DF RARE-EARTH ELEMENTS

216

M. Khiyalov, I. Atniraslanov, B. Nadzhafov,

K. Mamsdov

5. S7 SDRPTION OF ZnG5 DN HYDROXYLAPATITE AND POWDERED

DENTAL ENAMEL

E. KirkDva. E. Dyulgerova

5. EB, ON THE MECHANISM OF COPPER ION INCLUSION INTO

ZnC504.2H20 CRYSTALS

E. Kirkova, J. Panohava

5. S3 STUDY OF THE EFFECT OF THE POROUS STRUCTURE DF

SILICA GEL ON THE ADSORPTION DF WATER VAPOUR

Q. Klissurski, L. Spasov, D, SimBonov, I. Mitov

Hr. Tsonav.-, N. Jovanovich, J. Jan'achkDvich

5. 70 IR STUDY DF THE NATURE AND LOCALIZATION OF SOME

FDRMS DF OXYGEN ADSORBED ON THE ALPHA-CHROHIA

SURFACE

D. Klissurski, K. Hadjiivanov, A. Davydov

5. 71 THERMAL STABILITY OF Fb503-A1203-CbD5 CATALYSTS

USED IN THE TWOSTAGE OXIDATION OF AMMONIA TO

NITRIC OXIDE

D. Klissurski, D. Ilazniknv, Hr. Tsonav

29

219

PREPARATION OF DISPERSE VANADIUM PEIJTDXIDE BY

DECOMPOSITION OF ITS OXALATE AND PEROXIDE

COMPOUNDS

D. Klissurski, L. Makedonski, U. Eluskov,

H . Spasov

THERMAL DECOMPOSITION OF COPPER SULFATE

HYDROXIDE HYDRATE

D. Klissurski, D. Simaonav, L. Spasav, I. Uzunov

A NEW METHOD DF DETERMINATION OF N0NSTD1CHIDMETRIC

DXYGEN IN OXIDE MATERIALS

D. Klissurski, N. Abadjisva, L. Gyurova

REGULARITIES IN THE FORMATION DF EDRON-CDNTAINING

MACRDEICYCLIC D-METAL COMPLEXES

N.A. Kostromina, Y.Z. Uoloshin, A.Y. Nazaranka

CITRATOPLATINUMCin COMPLEXES WITH

1, B-DIAI'IINOCYCLOHEXANE

J. KDvacova, I. OndrBjkovic, G. Dndrejkovio,

U , Vancova

A OUASIBINARY MDDEL FDR SDLID SOLUTIONS

THE TYPE ACx^BCl-x3CCy.1 AND ITS APPLICATION TD THE

THERMDDYNAMIC ANALYSIS DF SDLID - GAS REACTIONS

220

G. KrabbEs, E. Wolf, W. Bieger

7S BINARY AND TERNARY MOLYBDENUM CHALCOBENIDES -

STABILITY, SUPERCONDUCTIVITY, ELECTROCHEMICAL

CYCLING BEHAVIOUR

G. KrabbEs, W, Schnaidar, R, Doge

73 EVOLUTION OF S-METAL VANADATE STRUCTURES

AND PROPERTIES

T.I. Krasnanka, A,A. Fatisv

BO THE LIQUIDUS AREA OF THE Fb203-U2D5-MdD3 SYSTEM

11. Kurzawa

Bl LUMINESCENCE OF ZINC OXIDE ACTIVATED WITH ZINC

CHLORIDE

K. Kynav, V. Kyk

BE DOUBLE CuCII) SULPHATES AND SELENATES - A NEW

TYPE OF INORGANIC SEMICODNDUCTORS?

H. LangfeldBrDva, B.. Papankova, M. SBrator

B3 FORMATION OF ACTIVE CENTERS AND THE ACTIVITY OF

SILVER MODIFIED YTTRIUM OXIDE IN THE METHANOL

OXIDATION

D. Lazarav, S. ManBV, K. Ivanov, A. BabQlB"

221

A, Loginov, S. Uidrin, H. Chokaav

B4 STUDY OF SOLUBILITY DIAGRAMS OF SYSTEMS COMPOSED

FROM INORGANIC SALTS AND DRGANIC SUBSTANCES

AND SYNTHESIS OF NEW CDPLEX CDMP0UND5

I.N. Lepashkav

B5 SYNTHESIS DF HIGH PURITY LITHIUM IODATE FOR

NONLINEAR DPTICS

A. Ljutov

BS ON THE POSSIBILITY OF DIRECT PREPARATION DF CDAL

ADSORBENT

L. L.jutzkanav, V. Minknva, G. AngBlava

B7 RADIATION AND THERMAL TREATMENT EFFECTS ON THE

ELECTRONIC SURFACE PROPERTIES AND THE CATALYTIC

ACTIVITY DF CaO AND CaD-NxDy CM-Nn,Cu,Ni3

MIXTURES FDR THE DECOMPOSITION OF N2D

L. Loukatzikoy, P. Pomnnia, A. Sdoukaa

BB SYNTHESIS AND PROPERTIES DF BERYLLIUM'S IDDATES ON

THE SYNTHESIS,STRUCTURE AND THERMAL TREATMENT OF

BbCI03:i2.2HIO3.SH2D

M, Manava, M. Gaarniav

222

B3 UTILIZATION OF USED VANADIUM CATALYST FOR

AMMDNIUM METAUANADATE AND VANADIC DXIDE

PREPARATION

M. Manava, Z, Kirtchava, R. Chapava,

R. Mechandjiava

N. Ivanava

30 KINETICS OF THERMAL DECOMPOSITION OF ZntN03)2.BH20

AND ITS DEUTERATED ANALOGUE WITH THE PURPOSE DF

OBTAINING ZnO

M. Manama, N. PatrnFF

SI STRUCTURAL STUDY OF THE GAMMA-ALPHA TRANSFORMATION

OF THE FINELY DIVIDED Fb203 UNDER HIGH PRESSURE.

EFFECT DF THE SPECIFIC SURFACE AREA AND WATER

F. Mathiau, A. Roussat, P. Roux,G. Eonal

32 MOLECULAR STRUCTURE OF TETRAQUOSODIUM

BISC2,B PYRIDI.NDIAMINE N, N, N '

,N'TETRAACETO

NICKELCII3):CNaCHSD))4CNiCPDTA3 32

A. Madaras, P. Gili, P.M. Zarza, S. Dominguaz

A.P. Monja, A. Eanitez, J.M. Arriata, L. Dupont

B. Germain, V. Metaxia

*

S3 ON THE REACTIVATION .DF CqBALT-MDLYBDENA CATALYSTS

FOR COAL LIQUEFACTION

D, Mahandjisv, E. ZhechBva, B.R, Aleksic,

B.D. Aleksic, B. Markovic, S. Bogdanov

22j

94 COPPERCin HALOGENOSALICYLATES

M, Clelnik

95 NATURAL ADSORBENTS - PROPERTIES AND USE

K, Nilchev, D. Dimitrav, P. PanayotDV,

T. ObrBtanav

SB ISODIMORPHOUS SUBSTITUTION IN THE Ce02-La5D3

SYSTEM

N. Minkava, S. Aslanian, D. Todarovsky

57 VARIATION OF THE SURFACE PROPERTIES DF THE NATURAL

CALCIUM ZEOLITES DEPENDING ON THE DEGREE OF

DEHYDRATION

D. Mirzai, F. Hashimov, H. Kahramanava,

J, jBltchisv, D. Tagiev

58 A IIDESSBAUER STUDY OF THE STEADY STATE

DF THE Fb2CMdD433 IN AN AIR/METHANDL MEDIUM

I. Mitov, D. Klissurski, S. Asenov, T. Tomov

39 HYDRATION DF DICALCIUM SILICATE IN THE PRESENCE

OF CONCRETE ADMIXTURES

F. Ilosalamy, A.F, Galal, A. Taha, S.A. El-Hemaly

224

5.100 STUDIES ON A DEHYDR0CYCLISAT1ON CATALYST

M. MostaFa

5.101 HEXANUCLEAR CLUSTERS WITH CMBC112D3+ CM-Nb,Ta3

CLUSTER UNIT

F. Mustovic, A.A. Kashta, N. Brnicavic

5.102 PREPARATION OF HIGH PURITY PDTASSIUM AND AMMONIUM

DIHYDROGEN PHOSPHATE

R. Nikolaava, L. KochBva, V. KalBva

5.103 CORRELATION BETWEEN THE HYDRODYNAMICS IN THE MELT

AND THE SHAPE OF THE CRYSTAL/MELT INTERFACE DURING

CZOCHRALSKI GROWTH DF SINGLE CRYSTALS

U, Nikolov, K. IHbv, P. PsshBv

5.104 THERMODYNAMIC STUDY OF SOME BINARY AND TRIPLE

AOUEOUS-SALT SELENATE SYSTEMS

T. OjkDva, D. StanBva

5.105 ON THE PLACE OF La AND Lu IN THE PERIODIC TABLE

X. Oudat

•

5.10G CATION EXCHANGE WITH MONO-,BI-,AND TRICATIDNIC

FDRMS OF BENTONITE CLAY

A. Ourouinava

225

5.107 THE INFLUENCE OF LOW ENERGY ION IRRADIATION DN THE

ADSORPTION PROPERTIES OF SEMICONDUCTOR SURFACES

A. Panesh, A. Yanavsky, M. Gerchikav, A. Simanav

5.10B BEHAVIOUR OF BRONITE DURING AN OXIDIZING CHLORI-

DIZING ROASTING

P. PsnBv, V. Angslava

5,103 BEHAVIOUR DF PYRITE AND PYRDTIME DURING AN

DXIDIZING CHLORIDIZINB RDASTING

P. Pansv, V. Angelqva

5.110 PREPARATION OF HIGH-DISPERSITY MCc504 SPINELS

Cn-Mg,Ni,Zn.l BY THERMAL DISSOCIATION DF

CDPRECIP'ITATED OXALATES

P. Peshev, A. Tnshev, G. Gyurnv

5.111 BRIDGMAN-STOCKBARGER GROWTH AND SPECTRAL CHARACTE¬

RISTICS OF AlH03:Ti3+ SINGLE CRYSTALS

P. FBshev, S, DalinBshsv, V. Petrov, N. I'lanuilov

5.112 PREPARATION OF CHROMIUM DISILICIDE SINGLE CRYSTALS

P. PeshBV, M. Khristov, G. Gyurav

226

5.113 SURFACE COMPOSITIONOF MABNESIUM-riTANIA MIXTURES

FOR HYDRD6EN STORAGE PREPARED BY DIFFERENT METHODS

P. Peshav, M. Khrusssanava, D. Chakarov,

M. Tarziava, Tz. Marinava

5.114 THE CATALYTIC ACTIVITY DF TRANSITION METAL

PHOSPHATE SALTS DN ALUMINA FDR THE CONVERSION

OF ISO-PRDPANOL

D. Patrakis, P. Pamonis, A. Sdaukos

5.115 NEUTRON DIFFRACTION STUDY ON THE CATIDHIC DISTRIBU

TIDN IN THE Cuf.:<)CaC3-x?04 CO<X< USFINELS PFEPAP.ED

BY THERMAL DECOMPOSITION DF LAYERED HYDROXIDE

NITRATE PRECURSORS

K, Petrov, K. KrezhDv

5.116 THE ROLE OF LAYERED HYDROXIDE NITRATE PRECURSORS

IN THE PREPARATION OF Mr.>OCaC3-x504 SPIMELSCM-Mg,

Cu,Ni,Zn; 0<X<1 )

K. Petrov, L. Markov

5.117 CHLORO-COMPLEXES OF COBALTCID IN HMPA SOLUTIONS

11. Pilarczyk, W. Grzybkowski, L. Klinszporn

5,lia THERMOCHEMICAL LIKENESS AND DIAGONAL ANALOGY

OF ANIONIC ELEMENTS IN PERIODIC TABLE

G.F. Pinaev

227

5.113 LEWIS ACID-EASE CONCEPTION AS FUNDAMENTAL

IN THERMOCHEMISTRY OF HYDRATED CATIDNS

G.F. Pinaav

5.120 TWO REGRESSORS CONFLUENT METHOD IN COMPARATIVE

THERMOCHEMISTRY OF DIELEMENT SALT-LIKE COMPOUNDS

G.F, Pinasv

5.121 VAPORIZATION AND ACCOMPANYING PROCESSES

OF PLATINUM CARBDNYLCHLDRIDES

D.G. Polyachenok, L.D. Polyachenok

5.122 PREPARATION AND REACTIVITY OF THE 1lnllo04-MoD3

SYSTEM

T. Papcv, K. Ivanov, P. Lichava, D. Klissurski

5.123 MECHANISM DF FORMATION DF MICRDHETERDEENEOL'S CXIDE

SYSTEM IN AQUEOUS MEDIUII

S. Rake/sky, A, Hramov, A. Maravskii, A, Eulatov

D. Shapov

5.124 STRUCTURAL EVOLUTION IN VARIOUSLY PREPARED SPINELS

DF CUBIC NICKEL COPPER MANDANITES:

MnC7/3-::.iCUi;x:iNIi;2/3.l0C4),0<x<2/3

A. Rausset, J. CaFFin, R. Metz, A. Uajpei

R. Legros

228

5.125 ABOUT THE MECHANISMS OF DEVELOPMENT AND KINETICS

DF THE EXPLOSIVE MECHANOCHEMICAL SYNTHESIS

V. Rusanov, Chr, Tchakarav

5.126 HIGH TEMPERATURE THERMAL NON-ORGANIC COATING

BASED ON A1203

B. Samuneva, U. Kozhukharav, N. Brashkava

5.127 TRICARBDXYLATDURANYLATES WITH PROTDNED AMINES

N, Santalova, Q. SeisenbaBva, A. Karjeva,

K.G, E.-Turok, K.M. DunaBva

5.1HB SYNTHESIS AND CHARACTERIZATION DF THE N-METHYL,

N-ETHYL, N,N-DIETHYLANILINIUM DQDECATUNBSTATES

AND DECATUNGSTATES

C. Santiago, A. Arnaiz

5.123 THE STRUCTURE AND MAGNETIC RESONANCE CHARACTERI¬

STICS OF THE LANTHAN DITHIOCARBAMATE COMPLEXES

A. SavostyanDva, U, Traohavsky, U. Kutz

5.130 MOSSBAUER STUDY OF ORGANO-IRDN COMPLEXES FORMED BY

REACTION DF CELLULDSE PRE-HYDROLYSATE WITH RUST

AND MAGNETITE

B. Savova, S. Nikalav

229

5.131 IRONCIin COMPLEXES WITH ALIPHATIC SUBSTITUTED

MONDCAREOXYLIC ACIDS

U.I. Schsrbakova, O.B. Pankratova, V.V Falchevsky

5.132 PREPARATION OF ZINC CHRDMATE WITH EXACTLY DEFINITE

COMPOSITION SZnD.CrD3.4H20

R. Schapova, G. Choydoguiin

5.133 SYNTHESIS AND STRUCTURE OF Ra-ho-CONTAINING

CLUSTERS WITH THE "BUTTERFLY" FRAME Re2Mo2

AND PHENYLACETYLENE BRIDGE

A. ShapashnikovH, R. Stadnichanko, U. Eslsky,

A. Pasynsky, A. Bogatsky

5.134 THE STRUCTURES OF METAL COMPLEXES WITH PYRIDINE-

CARBDXII1IDES ISOMERS AND NICODINE

A. Shnulm, R. KiguradZB, G. Tsintsadza,

F. Mamedava

5.135 COPPER-TITANUM ALLOYS AND THEIR ACTIVITY IN THE

OXIDATION OF HYDROGEN

A. Slavav, D. Lazarav, S. Manav, R. Stajkov

5.136 INTERACTION DF OXYGEN WITH Cu-Ti ALLOYS

A. Slavav, D. Lazarav, S. Manav, R, Stajkov

250

5.137 NORMAL-COORDINATE ANALYSIS DF HYDDXYLAMMDNIUM

SULFATE

B. Septrajanov, A. Eriksson, A, Miroava

5.13B SYNTHESIS AND STRUCTURE DETERMINATION DF TWD NEW

CYCLO-TETRAPHOSPHATES: MC11 JAg2P4012.SH2D

CMC IIH-Co,Nil

M. Soua, A. Jnuini, M. Dabbabi

5.13S STEREOCHEMICAL ASPECTS OF NICKELCIU COMPOUNDS

WITH HETEROLIGAND COORDINATION SPHERE

T. Sramko, M, Malnik, M. Dunaj-Jurco

5.140 STUDY OF THE PHASE EQUILIBRIA IN A TRIPLE ACIUEQUS-

-SALT SELENATE SYSTEM

0. Stansva, T. Ojkava

5.141 THE MOLECULAR STRUCTURE AND PROPERTIES

OF THE CoCII) AND Nidi) COMPLEXES

WITH PHENYLALANINE

J. Starosta, W. Wojciechowaki, F. Karczynski

5.142 JAHN-TELLER COUPLING CONSTANTS FDR ZnSMIn AND

ZnSa:Mn EXCITED STATES

K. Stavrav, K. Kynav, G.S. Nikolov

2J1

5.143 THE DEPENDENCE UPON TEMPERATURE OF THE ACTIVITY

COEFFICIENT IN TERNARY AQUEOUS SYSTEMS

S. StsrnbErg, M. Draganaiu

5.144 INFLUENCE DF THE JAHN-TELLER EFFECT ON THE ISOOI-

MDRPHDUS INCLUSION OF HeCI ID FORMATES IN THE

CuCHCD0:i2.2HB0

D. Stailava, S. Aslanian

5.145 ACETATE-CHLDRIDES AND FORMATE-CHLDRIDE COMPLEXES

FORMATION DF BIVALENT METALS CHg,Ca,Sr,Ea,Mn,Co,Ni

Cu,Zn,Cd3

D. Stailava

5.145 COORDINATION CHEMISTRY DF ACTINIDE HYDRDQUINDNES

AND AMINOACID COMPLEXES"-i

A. Strazov

5.147 MECHANICALLY ACTIVATED TRANSFORMATION

OF GAMMA -FeOOH CLEPIDDCROCITEJ IN AQUEOUS MEDIA

J. Subrt, A. Nosak, K, Bechina

5.14B ON THE EMISSION OF GALLIUM ACTIVATED SINGLE

CRYSTALS OF BARIUM CHLORIDE

V. Tabakova

232

5.143 RELATIONSHIP BETWEEN EXCHANGEABLE ACIDITY AND pH

IN MODEL SUSPENSIONS OF CLAY MINERALS AND

SESQUIHYDROXIDES

M, Tanava

5.150 INFLUENCE OF THE INERT IMPURITIES ON THE EXPLDSIVE

NECHAND-CHEMICAL SYNTHESIS OF SOME METAL

HALCOGENIDES

Chr. Tchakarav, U, Rusanav

5.151 RELATION BETWEEN THE AMONT OF COLLQIDAI FORMED

IRDNCim HYDROXIDE,PFb AND pH TITRATION DF

FeCIin

I.F. Tcholakava, K.H, Liassr

5.152 NEW EIOLOGICALLY ACTIVE PLATINIUMCIIH COMPLEXES

STRUCTURE AND PROPERTIES

I.F. Tcholakava, A. Bakalova, B. Aleksisv,

M. Karaivanova, M. Arnaudov

5.153 PHYSICAL-CHEMICAL INVESTIGATION OF THE ALKALINE-

EARTH ELEMENTS HYDROMETAGERMANATES COMPOSITION

DETAINED UNDER HYDRDTHERI1AL CONDITIONS

H.S. Tsimurov, Y,G. YusiFuv, N. Mustafaev,

K.S, Mamedav

233

5.154 CHEMICAL INTERACTION DF CADMIUM TELLURIDE WITH

AQUEDUS SOLUTIONS OF HN03-HC1 SYSTEM

U.N, Tamashik, A.A. Sava, I.B. Mizafcskaya

5.155 CHEMICAL INTERACTION IN THE SYSTEM HgTB-In

U.N. Tamashik, P.F. Vangal

5.156 PHYSICO-CHEMICAL INTERACTION IN TERNARY MUTUAL

SYSTEMS BASED ON LEAD AND CADMIUM CHALCDGENIDES

Z.P. Tamashik, V.N. Tomashik, G.S. Dlainik

5.157,

PREPARATION OF SnD2 SINGLE CRYSTALS BY CHEMICAL

TRANSPORT WITH C12 AND CC14 AS TRANSPORT AGENTS

A, Toshav, P. Pashav

5.158 EFFICIENCES DF In-As TRANSPORT AND EPITAXIAL

GROWTH BY VAPOUR DEPOSITION IN THE SYSTEM

InAs-AsC13-H2

E,P. TriFonova, L. Hitova

5.15S LOW TEMPERATURE SYNTHESIS OF 111-VSEMICONDUCTOR

COMPOUNDS

E.P. TriFonova, N.N. Zhalava, D.l, Kushav

5.160 NEW CONDENSED SILICATE-PHOSPHATES OF BIVALENT

234

METALS

M. Trojan, D. Brandova

5.151 PREPARATION OF NEW BINARY CYCLIC TETRAPHOSPHATES

1*1. Trajan, L. BanBs, P. Mazan

5.162 COLOURED HIGH-TEMPERATURE MATERIALS

BASED DN ZIRCDN

11. Trojan, H. Kuohlar, Z. Sole

5.163 THE NATURE OF EXCESS OXYGEN IN Co3DC4+bH

AS REVEALED BY XPS

G. Tyuliav, S. AngBlav

5.164 INVESTIGATION DN THE THERMAL DECOMPOSITION OF

ALUMINIUM-AMMONIUM SULFATES

M. Tzankov, Y, Pelavski, I. Gruncharav,

I. Dombalov, P. Kirilov

5.1B5 ON THE CORRELATION BETWEEN IR-SPECTRA OF

PHOSPHATES AND THEIR MEAN ELECTRONEGATIVITIES

T. Vaimakis, P. Pamnnis, A. SdQUkDS

S.156 STANDARTIZATIDN OF SOLUBILITY DATA OF AQUEOUS

"

SYSTEMS

235

V.M. Valyashko

5.167 FORMATION AND MIGRATION ENTRDPIES IN ALKALINE

EARTH FLUORIDES

C. Varatsos

r

S.1BB THERMAL.I.R. AND DTHER STUDIES ON

Ba, Cd AND Pb SELENITES

U,P, Varma, A.K. Khushu

5.163 ATOMIC CHARGES IN A TWO DIMENSIONAL CLUSTER

ADSORBED ON A METAL SURFACE

S.2h. Ulaav, I.Z. Kostadinov

5.170 THE CRYSTAL STRUCTURE DF DISDDIUM ETHYLENEBISD1-

TH10CARBAMATE HEXAHYDRATE

Na2CS2CNHCCH232HNCS23.BH2D

V. UrabBl, J. Lakaj, E. Kallo, J. Garaj

5.171 THE MECHANISM AND KINETICS DF THE REACTION OF

CuS04 WITH THE CuS02 PHASE

J. Walczak, H. Debinski, B, Muraszka,

P. Wisniswski

5.172~ PHASE EQUILIBRIA IN THE FeVMo07-U505 SYSTEM

J. Walczak, M. Kurzawa

256

5.173 CrVMo07 - A COMPOUND CRYSTALLIZING

IN THE Cr203-UB05-Mo03 SYSTEM

J. Walczak, E. Filipak

5.174 SYNTHESIS OF Cr2V4013

J. Walczak, E. FilipBk

5.175 STABILIZATION OF COLLOIDAL DISPERSIONS BY I1ACRD-

flOLECULES: EFFECT OF PREFERENTIAL TAIL- OR LOOP-

-ADSORPTIDN

A. Waiaa

5.176 PREPARATION AND CHARACTERIZATION OF CATALYSTS

FOR HIGHER ALCOHOL SYNTHESIS

Xu Xiaoding, E. Doesburg, U. Lamers,

Zhang Yu-Fsn, J.v.d UBen, E. Appledorn,

B. SonnBvilla, J, SchaltBn

5.177 PREPARATION AND INVESTIBATIDN OF CaBX4-TYPE

CRYSTALS CWITH B-Ga,In; X-S,Sb,Tb.1

N, Yagubnv, T. GuliBv, P. Rustamov, E. Ilaherramov

G. Niftiav, B. Safarnv

5.17B CATALYTIC ACTIVITY OF IRDN COMPLEXES WITH LIGANDS

CONTAINING DIFFERENT FUNCTIONAL GROUPS

237

K. Yakubov, Y. OFfsngendBn, A.N. Astanina

S.173 THERMAL ANALYSIS DF HETERDNUCLEAR CAREOXYLATE

CLUSTERS WITH THE GENERAL FDRMULA

l" Fe2M0 C RCOO H 5 C H20 D 3 3

K. Yakubpv, T.- Nasanova, S. AbdullaBV,

V.A. Logvinenko

5. ISO DETERMINATION ACCORDING TO KAFARDV OF THE STANDARD

ENTHALPIES DF FORMATION AND GIBBS ENERGIES OF CRY¬

STAL HYDRATES AND ANHYDROUS DOUBLE SALTS DEPENDING

ON THEIR BASIC PROPERTIES

N. Yanakiav

5.1B1 THE ENTROPY FACTOR ROLE IN THE DETERMINATION OF

THE STAEILITY REGIONS OF TRANSITION METAL OXIDES

N. Yanakiev, D. Mehandjiev

5. IBB EPR STUDIES ON MAGNETICALLY DILUTED POWDER SAMPLES

OF COPPERCII)PHENYL DITHIOCARBOXILATE CDMPLEX

N.D. Yordanov, E. GanBva

5.1B3 31p ENDOR STUDY OF CDIISOPROPYLDITHIOPHOSPHATDD

CDIETHYLDITHIOCARBAMATODCOPPERCin COMPLEX

N.D. Yordanov, M. Zdravkova

5.1B4 EFFECT DF AMORPHOUS Si02 ON THE PROCESSES OF

238

PORTLAND CEMENT HARDENING

S.D, Yordanova, D. Cholakovn

5.185 CATALYTIC BEHAVIDUR DF METAL IDNS IN HETEROPOLY-

ACIDS CSALTS3 OF DIFFERENT STRUCTURE CKEGGIN AND

DAWSON 1!CORRELATED WITH CATALITIC ACTIVITY FDR H2D

DECOMPOSITION

Yub Wu, Shua-Hua Qu, Hui-Min Ma

5. IBB INVESTIGATION DF THE OXIDATION RESISTANCE

DF A BORON-METALLIZED DIE STEEL

Z. ZakhariBv, D. SimBDnov, R. Zlatava

S.1B7 THE HYDROLYSIS OF ALUMINIUM SULFATEC111)

IN DILUTED WATER SOLUTIONS

A.K. Zapolsky

5. IBB STUDY DN THE I.R, SPECTRA OF TRI NUCLEAR BASIC

ACETATES DF Fa AND Cr

Zhang Linna. Liu Zhiping, Ha Lingjis,

Cai Shuhua, Jian FBnlng

5. IBS STUDY ON THE SPECTRA DF TRINUCLEAR BASIC ACETATES

DF IRON AND CHROMIUM

Zhang Linna, Liu Zhiping, Hb Lingjis,

Cai Shuhua, Jian FBnying

235

S.130 LOW TEMPERATURE SYNTHESIS DF IU-VI AND II-VI

COMPOUNDS AND SOLID SOLUTIONS

N.N. ZhslBva, E.P. Trifonnva, S. Patrov, D. KushBV

5.191 INFLUENCE DF THE .NATURE AND COMPOSITION OF THE

MIXED SOLVENT BY CRYSTALLIZATION OF METALCIIli

HALOGENS FRDM SOLUTIONS

I. ZlatB"a, M. Stoav

5,132 EXPERIMENTAL STUDY DF THE POISONING DF Ni-CATALYST

IN DIFFUSION REGION

S. Zrncsvio, N, Pavlovic, N. Filic, Z. Domzi