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Fast development and wide application
of stripping electroanalytical methods, stripping voltammetry particularly,
is due to low detection limit, high sensitivity, selectivity, analysis
rapidity, low cost of equipment. Electroanalytical methods provide
successful decision of problems connected with environmental and
technological processes monitoring, analysis of food, biological
and clinical objects, various industrial materials.
Disadvantage of Stripping Voltammetry is the sensor (working electrode).
Normally mercury or mercury containing solid electrodes are used
as sensors. Basic problem of their application is toxicity of mercury
and its soluble salts, necessity of solid electrode surface renewal.
To overcome the difficulties we worked out working electrodes free
of mercury or mercury soluble salts. |
- Environmental safety;
- Electrochemical inertness in wide potential range;
- Electrochemical surface regeneration;
- High sensitivity;
- Great number of determined elements;
- Comfort application in field conditions.
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- Impregnated graphite electrode (electrochemical surface
regeneration), the electrode is applied for Cu,Pb,Cd,Zn,Cr,Ni,Mo,Mn,Sn
determination.
- Thick film graphite electrodes for the determination
of Ni, Cr, W, Se, Mn, Mo.
- Four electrode electrochemical sensors for field analysis.
Sample preparation and measurement processes are combined
in one tank.
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Type |
Sensor/Electrode |
Sensor
purpose |
Analyzer |
1 |
I |
Epoxy impregnated graphite electrode |
Determination of Cu, Pb, Cd, Zn, Fe in highly mineralized
(sea and ocean) waters |
«IVA-5» |
2 |
II |
Paraffin impregnated graphite electrode |
Determination of Mo in natural, drinking and waste waters
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«IVA-5» |
3 |
IV |
Thick film electrode based on epoxy-graphite
composite |
Determination of:
- Ni, Cr, Co in natural, drinking and waste waters;
- Mn in sea and ocean waters.
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«IVA-5» |
4 |
V |
Thick film graphite containing electrode modified
with calomel |
Determination of:
- Cu, Pb, Cd, Zn, Fe, Sn in fresh natural,
drinking and waste waters, foodstuffs, food raw material, soils,
biological objects;
- thiols, disulfides in biological objects.
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«IVA-5» |
5 |
VI |
Thick film graphite containing electrode modified
with gold |
Determination of:
- As, Hg, Se in natural, drinking and waste waters;
- Hg in soils.
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«IVA-5» |
6 |
VIII |
Thick film platinum containing electrode |
AOA determination of foodstuffs, food raw material, nutrients,
vitamins, biological materials samples and oxidant activity
of chlorinated/ozonized water |
«MPA-1»
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