Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10561526 | Talanta | 2005 | 4 Pages |
Abstract
Bismuth film electrode (BiFE) was shown to be an attractive alternative to common mercury film electrode (MFE) for anodic stripping voltammetric measurements. In this study, bismuth film, that was in situ deposited onto glassy carbon electrode, was used to detect zinc content of milkvetch, used in traditional Chinese medicine. Variables affecting the response have been evaluated and optimized. Experimental results showed a high response, with a good linearity (between 0.5 Ã 10â6 mol Lâ1 and 3 Ã 10â6 mol Lâ1) a good precision (R.S.D. = 3.58%) and a low detection limit (9.6 Ã 10â9 mol Lâ1 with a 120 s anodic). The anodic stripping performance makes the bismuth film electrode very desirable for measurements of trace nutritive element zinc in milkvetch and should impart possible restrictions on the use of mercury electrode.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Ziying Guo, Feng Feng, Yanxia Hou, Nicole Jaffrezic-Renault,