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Title: A pulse polarographic method for the analysis of zinc dithiocarbamates
Authors: Sharma, D K
Kumar, Satish
Chauhan, Chetan
Gupta, Atul
Issue Date: Jul-2007
Publisher: CSIR
IPC Code: Int. Cl. ⁸ G01N27/00
Abstract: An extremely sensitive pulse polarographic method for the determination of zinc dimethyldithiocarbamate (an agricultural fungicide) and zinc di-n-pentyldithiocarbamate (a petroleum additive), has been developed based on the reaction of their dithiocarbamate moiety with copper(II) perchlorate in acetonitrile medium. Well defined diffusion-controlled peaks are observed at –140 mV and –130 mV (vs SCE) for zinc dimethyldithiocarbamate and zinc di-n-pentyldithiocarbamate respectively. The peaks shows approximately four-fold higher sensitivity than that obtained by pulse polarography of the zinc dithiocarbamate alone. A linear relationship is obtained between concentration of the zinc dithiocarbamate [added to copper(II)] and peak current. Using cyclic voltammetry, a probable mechanism for the zinc dithiocarbamate-copper(II) reaction has been proposed.
Page(s): 1121-1124
ISSN: 0376-4710
Appears in Collections:IJC-A Vol.46A(07) [July 2007]

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