Determination of chromium by cyclic voltammetry.


A highly sensitive assay for the detn. of Cr(VI), in the presence of Cr(III) and in the presence of other cations by cyclic voltammetry. The detn. is carried out with a gold or gold-plated electrode with a self-assembled monolayer of a pyridine deriv. of the kind of 4-(2-ethanethiol) pyridine. Detns. can be effected at extremely low levels of the order of 1 ppt (part per trillion, 1012). [on SciFinder(R)]


CAPLUS AN 1997:226956(Patent)