Direct Measurements of Cadmium, Lead and Copper in Whole Blood Using the Stripping Voltammetric Method with Modified Thick-Film Graphite Electrodes
NINA F. ZAKHARCHUK1, SVETLANA YU. SARAEVA2, LUDMILA I. KOLYADINA2, OLGA I. SUDAEVA1 and KH'ENA Z. BRAININA2
1Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences,
Pr. Akademika Lavrentyeva 3, Novosibirsk 630090 (Russia) E-mail: nzak@che.nsk.ru
2Ural State University of Economy, Ul. 8-go Marta 62, Ekaterinburg 620219 (Russia) E-mail: baz@usue.ru
Pages: 775-786
Abstract
The existing methods for measurement of Cu(II), Pb(II) and Cd(II) in whole blood need expensive complicated equipment, require preliminary destruction of the blood matrix, and generally cannot provide the necessary detection limit. We have reported the use of the stripping voltammetric method with modified thick-film electrodes for the analysis of whole blood and its fractions. The said electrodes, a quick potential sweep rate, and recording of differential voltammograms excluded extremely toxic mercury and its soluble salts from analysis, made the operations of the solution deaeration and chemical and electrochemical sample pretreatment unnecessary, and allowed decreasing the volume of test samples to 25
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