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標題: Disposable barrel plating nickel electrodes for use in flow injection analysis of trivalent chromium
作者: Sue, J.W.
Tai, C.Y.
Cheng, W.L.
Zen, J.M.
關鍵字: chromium;nickel electrode;disposable;flow injection analysis;adsorptive stripping voltammetry;ion-selective electrode;chemiluminescence detection;optimization procedure;cr(iii);oxidation;water;cr(vi)
Project: Electrochemistry Communications
期刊/報告no:: Electrochemistry Communications, Volume 10, Issue 2, Page(s) 277-282.
We report a disposable barrel plating nickel electrode (Ni-BPE) coupled with a specifically designed electrochemical cell for use in flow injection analysis for the determination of trivalent chromium (Cr-III). The response of the activated Ni-BPE was found very sensitive under alkaline condition with a systematic increase in current signal upon successive addition of Cr-III. Under optimized conditions, the calibration curve showed a linear range up to 1 mM with a detection limit (S/N= 3) of 0.30 mu M. Continuous hydrodynamic flow of 0.1 M NaOH at regular Cr-III injections verify the reproducibility of the present system. The proposed method was successfully used to detect the amount of Cr-III in environmental water to show its potential use in real applications. (c) 2007 Elsevier B.V. All rights reserved.
ISSN: 1388-2481
DOI: 10.1016/j.elecom.2007.12.008
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