628-13-7

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Chromium speciation in environmental samples using a solid phase spectrophotometric method.

Alaa S Amin et al.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 96, 541-547 (2012-07-07)

A solid phase extraction technique is proposed for preconcentration and speciation of chromium in natural waters using spectrophotometric analysis. The procedure is based on sorption of chromium(III) as 4-(2-benzothiazolylazo)2,2'-biphenyldiol complex on dextran-type anion-exchange gel (Sephadex DEAE A-25). After reduction of

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