PURGE & TRAP
Training CommercialJuly, 22th 2010
Saint-Antoine - France
2
INTRODUCTION
Identification and measurement of purgeable volatile organic compounds in air and water
VOC extraction in compliance with 502.2 Method (US EPA)
Compounds tables Method 502.2 : 60 compounds
3
APPLICATIONS
Environment Raw source water River water Seawater Rain water
Potable Water Finished drinking water Bottled water
4
WATER SAMPLING
5
WATER RINSING & INJECTION
6
SPARGING
7
PRINCIPLE
All glass purging device is designed to accept 5 ml samples with water column at least 5 cm deep. Dead volume must be less than 15 ml. We need inert gas to purge 5 ml water sparger with bubbles (created by the frit) less than 3 mm at the base of the sample . N2 generator is delivered with this automatic sparger.
Automatic water rinsing for surveillance with liquid pump and injection system for 5 ml
8
NITROGEN
N2 generator: N2 production contains less than: 2 ppm O2 10 ppt Total Hydrocarbon Dew point < -18°C
N2 flow regulation for VOCs extraction: 40ml/min Volume calculation is memorized in VISTACHROM Unit display can be mass (ng) or µg/L
9
PURGE & TRAP WITH VALIDATION
11 minutes purge & trap extraction for: Range = 0.01 to 200 μg per liter (water) or m3 (air).
airmoCAL is used for: VOCs Linearity Zero validation with blank Calibration / Inter calibration by liquid and gas airmoCAL D in option for cylinder dilution
Air analysis above surface water in sequence with water analysis for validation of results and water quality control with airmozone Purge & Trap
10
DISPLAY SOFTWARE & DATA TRANSFER
VISTACHROM display: Pressure, flow, temperatures on the
supervisor Purge sampling temperature Communicate sampling / analytical / calcul
parameters to final end user.
For traceability Chromatotec use a supervisor
11
SOLUTION
airmoPURE (Zero Air generator)
N2 generator
Hydroxychrom (H2 generator)
airmoCAL (option: dilution)airmoVOC (C6-C12 model)Detectors: FID or PID or ELCD or Mass DetectorPurge system for finished drinking water (you need to complete with sampling system for non filtered water)
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502.2 LIST : 60 COMPOUNDS WITH FID OR (PID & ELCD)
Analytes CAS Registry Number Analytes CAS Registry NumberBenzene
BromobenzeneBromochlorometane
BromodichloromethaneBromoform
Bromomethanen-Butylbenzene
sec-Butylbenzenetert-Butylbenzene
Carbon TetrachlorideChlorobenzene
ChloroethaneChloroform
Chloromethane2-Chlorotoluene4-Chlorotoluene
Dibromochloromethane1,2-Dibromo-3-Chloropropane
1,2-DibromoethaneDibromomethane
1,2-Dichlorobenzene1,3-Dichlorobenzene
1,4-DicholorobenzeneDichlorodifluoromethane
1,1-Dichloroethane1,2-Dichloroethane1,1-Dichloroethene
cis-1,2-Dichloroethenetrans-1,2-Dichloroethene
1,2-Dichloropropane
71-43-2108-86-174-97-575-27-475-25-274-83-9104-51-8135-98-898-06-656-23-5108-90-775-00-367-66-374-87-395-49-8106-43-4124-48-196-12-8106-93-474-95-395-50-1541-73-1106-46-775-71-875-34-3107-06-275-35-4156-59-4156-60-578-87-5
1,3-Dichloropropane2,2-Dichloropropane1,1-Dichloropropene
Cis-1,3-DichloropropeneTrans-1,3-Dichloropropene
EthylbenzeneHexachlorobutadiene
Isopropylbenzene4-IsopropylbenzeneMethylene Chloride
NaphtalenePropylbenzene
Styrene1,1,2,2-Tetrachloroethane1,1,1,2-Tetrachloroethane
TetrachloroetheneToluene
1,2,3-Trichlorobenzene1,2,4-Trichlorobenzene1,1,1-Trichloroethane1,1,2-Trichloroethane
TrichloroetheneTrichlorofluoromethane
1,2,3-Trichloropropane1,2,4-Trimethylbenzene1,3,5-Trimethylbenzene
Vinyl Chlorideo-Xylenem-Xylenep-Xylene
142-28-9590-20-7563-58-6
10061-01-510061-02-6
100-41-487-68-398-82-899-87-675-09-291-20-3
103-65-1100-42-5630-20-679-34-5
127-18-4108-88-387-61-6
120-82-171-55-679-00-579-01-675-69-496-18-495-63-6
108-67-875-01-495-47-6
108-38-3106-42-3
In bold : compounds analysed by C6-C12
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COMPOUNDS LIST WITH PID DETECTOR:36 COMPOUNDS
Analytes CAS Registry Number Analytes CAS Registry Number
BenzeneBromobenzenen-Butylbenzene
sec-Butylbenzenetert-ButylbenzeneChlorobenzene2-Chlorotoluene4-Chlorotoluene
1,2-Dibromoethane1,2-Dichlorobenzene1,3-Dichlorobenzene1,4-Dicholorobenzene
1,1-Dichloroethenecis-1,2-Dichloroethene
trans-1,2-Dichloroethene1,1-Dichloropropene
Cis-1,3-DichloropropeneTrans-1,3-Dichloropropene
71-43-2108-86-1104-51-8135-98-898-06-6
108-90-795-49-8
106-43-4106-93-495-50-1
541-73-1106-46-775-35-4
156-59-4156-60-5563-58-6
10061-01-510061-02-6
EthylbenzeneHexachlorobutadiene
Isopropylbenzene4-Isopropylbenzene
NaphtalenePropylbenzene
StyreneTetrachloroethene
Toluene1,2,3-Trichlorobenzene1,2,4-Trichlorobenzene
Trichloroethene1,2,4-Trimethylbenzene1,3,5-Trimethylbenzene
Vinyl Chlorideo-Xylenem-Xylenep-Xylene
100-41-487-68-398-82-899-87-691-20-3103-65-1100-42-5127-18-4108-88-387-61-6120-82-179-01-695-63-6108-67-875-01-495-47-6108-38-3106-42-3
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CONCLUSION
All our competence and experience on air quality monitoring (European Certifications, US EPA Test, Chinese National Certification…) allow us to develop water quality monitoring.
The calibration is in gas and we compare it to a calibration in water which is not much stable.
We can supply various detectors, a FID (reference detector: linear and stable) and other detectors : PID and ELCD (502.2 method), Mass Detector (524 method).
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MARKETS
Environment Raw source water River water Seawater Rain water
Potable Water Finished drinking water Bottled water