Technical Data: Voltammetry (VA) - Measurement of Selenium in Drinking Water
Voltammetry (VA) - Polarography
Direct measurement of selenium in the low μg/L range using voltammetry and scTRACE Gold electrodes.
The difference between the toxicity of selenium and its essential level is very subtle. Therefore, the current provisional guideline value for selenium (IV) in the World Health Organization's "Guidelines for Drinking-water Quality" and the European Drinking Water Directive is set at a maximum concentration of 10 μg/L. Voltammetry techniques conducted on non-denatured scTRACE Gold electrodes can be used to measure selenium concentrations as low as 0.5 μg/L. These lower limits can be further reduced by increasing the deposition time. The linear range at a deposition time of 30 seconds ends at approximately 100 μg/L.
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basic information
Measurements can be conducted in the laboratory using the 884 Professional VA or outdoors using the 946 Portable VA Analyzer. This method is suitable for both manual and automated systems.
Price range
P5
Delivery Time
Applications/Examples of results
The scTRACE Gold electrode does not require extensive maintenance such as mechanical polishing.
Detailed information
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Combination of 884 VA Professional + 919 Autosampler
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Combination of 946 Portable VA Analyzer and PC
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Company information
Metrom AG, based in Herisau, Switzerland, is a leading company specializing in ion analysis with over 70 years of history. It provides products and services in more than 140 countries worldwide. Based on Swiss technology developed over many years, the equipment comes with a 3-year warranty.
