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Microdetermination par polarographie impulsionnelle différentielle du chrome(VI) présent dans les ciments industriels.

par Patriarche, Gaston
Référence Analytical letters, 17, 20, page (2309-2317)
Publication Publié, 1984

Article révisé par les pairs

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Résumé :

The toxicological literature often mentions that chromium (VI), present and added to cements for technical reasons, induce dermatosis. Good analytical techniques are not available. The D.P.P. method proposed here for the microdetermination of chromium (VI) in cements is fast and selective. The cation is solubilized by stirring the cement with distilled water. After filtration, the solution is submitted to differential pulse polarography. Generally, samples analysed contain between 1 and 12 mg of chromium (VI) per kg of cement. The potential peak is-0.19 V v.s. S.C.E. for the pure chromium (VI) solution and is shifted toward between-0.25 and-0.30 V v.s. S.C.E. when chromium (VI) is extracted from real cement samples The detection limit is 0.3 ppm. © 1984, Taylor & Francis Group, LLC. All rights reserved.