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HEAVY METALS SENSOR
FINAL DISSEMINATION EVENT BARCELONA, 27 – JANUARY - 2017
DropSens (www.dropsens.com)
1
Design, development and manufacture of screen
printed electrodes, portable electrochemical instruments
and accessories
Innovative technology-based
company
World leader in the development of screen printed
electrodes (SPEs)
DropSens info
R&D Department participating in projects
with RTDs, SMEs, Universities…
ISO 9001 & ISO 13485
Quality Management Systems
DropSens info
Research, development, manufacture and commercialisation of instruments and devices for chemical analysis
Screen-printed electrodes
and portable potentiostats
Spectroelectrochemistry and
Electrochemiluminescence
Instruments
Accesories for SPEs, IDEs,
nanomaterials, electrochemistry
reagents and lab kits
About me
• Role on Common Sense project:
Sensor for in situ monitoring of heavy metals:
To develop a sensor module for the automatic detection of low concentrations of heavy metals in seawater, which can be integrated with other sensors developed in the project.
Origin
Traditional methods for heavy metals detection
√ Allow detection of heavy metals at trace levels (ppb) √ High sensitivity √ Specificity √ Very reproducible Χ Remain in the laboratory once installed Χ Expensive Χ Require trained operators Χ Extensive sample preparation Χ High power consumptions
The future…
Atomic absorption Inductive coupled plasma – mass spectrometry
√ Portable (in-situ analysis of heavy metals) √ Autonomous √ Easy to use √ Cost effective √ Specificity, high reproducibility and sensitivity
2.5 cm
Screen printing technology
Synthesis & assesment of
sensing material
Ink formulation Screen printed electrode
Technical contribution
“Screen-printed electrodes for environmental monitoring of heavy metal ions: a review” Microchim Acta (2016) 183:503-517 (Partners involved: DropSens, DCU, CNR, UCC) “Screen-printed electrodes made of a bismuth nanoparticle porous carbon nanocomposite applied to the determination of heavy metal ions” Microchim Acta (2016) 183:617–623 (Partners involved: NAPCOM-CSIC, IMB-CSIC, DropSens)
Technical contribution
Laboratory development of an analytical method for the detection of heavy metals in seawater samples
Reference standards and
artificial marine samples for
validation purpose
Technical contribution
Heavy metals prototype development
Heavy Metals Sensing Platform: Generation 3
Generation 1
Generation 2
Generation 3
Tested on-board Minerva Uno Ichunussa cruise
Validation and Testing February and April 2016 DropSense DCU ICNAB
Technical contribution
Electrode
Mixing chip
Waste
Reagent
Sample
Peristaltic pumps Valves
Wall jet flow cell
Technical contribution
LCD screen to control flow Potentiostat: instrument used to perform the experiments
Technical contribution
Deployments
Deployments
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-1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4
Cu
rren
t (u
A)
Potential (V)
Cd and Pb Calibration 25 -100ppb in Seawater
100 ppb
75 ppb
50 ppb
25 ppb
Deployments
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25
30
-1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4
Cu
rre
nt
(uA
)
Potential (A)
Station: Sol 16
Mid 15m
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-1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4
Cu
rren
t (u
A)
Potential (V)
Station: Sol 15
Surfac…
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-1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4
Cu
rre
nt
(uA
)
Potential (V)
Station: Sol 17
Mid 25m
Heavy metals team
What’s next
Further validation will allow the system to be deployed autonomously for longer periods and for simultaneous determination of more heavy metals.
TRL 6
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