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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.46A [2007] >
IJC-A Vol.46A(07) [July 2007] >
| 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 |
| Source: | IJC-A Vol.46A(07) [July 2007]
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