Electroanalytical Device for Cadmium Speciation in Waters. Part 2: Automated System Development and Cadmium Semicontinuous Monitoring |
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| Authors: | Olivier Zaouak Laurent Authier Cyril Cugnet Eric Normandin Daniel Champier Marc Rivaletto Martine Potin‐Gautier |
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| Affiliation: | 1. Université de Pau et des Pays de l'Adour / CNRS, Laboratoire de Chimie Analytique et Bio‐Inorganique UMR 5254 IPREM, 2 avenue Angot, 64053?PAU Cedex 9, France;2. Université de Pau et des Pays de l'Adour, Innov'Adour, 2 avenue Angot, 64053 PAU Cedex 9, France;3. Université de Pau et des Pays de l'Adour, Laboratoire de Génie Electrique/EA 3001, 2 avenue Angot, 64053?PAU Cedex 9, France |
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| Abstract: | A full‐automated electroanalytical device is presented here. It is composed of an electrochemically adapted automation module and a competitive screen‐printed sensor modified ex situ by a very low quantity of mercury. The contribution of this automated apparatus to analyses is described in detail. Coupled with an UV‐photolysis unit, it has permitted the rapid detection of both total and electrochemically accessible cadmium in solutions containing 10 mg L?1 of humic substances without addition of reagents. Semicontinuous monitoring of tap water doped with 5.3 μg L?1 of cadmium, in presence of traces of lead and copper, has been successfully achieved for 7 days. |
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| Keywords: | Stripping voltammetry Automation Semicontinuous monitoring Heavy metals Cadmium |
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