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標題: Flow injection analysis of zinc pyrithione in hair care products on a cobalt phthalocyanine modified screen-printed carbon electrode
作者: Shih, Y.
Zen, J.M.
Kumar, A.S.
Chen, P.Y.
關鍵字: zinc pyrithione;cobalt phthalocyanine;screen-printed carbon electrode;flow-injection analysis;performance liquid-chromatography;copper chelate formation;2-pyridinethiol 1-oxide;cosmetic products;water samples;gas sensor;dandruff;shampoo
Project: Talanta
期刊/報告no:: Talanta, Volume 62, Issue 5, Page(s) 912-917.
Zinc pyrithione (ZPT) is an antibacterial and antifungal reagent that is often utilized for the antidandruff activity in hair-care shampoos with a composition level up to 1% in the formulation. It has some adverse effects to human and animal if consumed orally. A disposable type of cobalt phthalocyanide modified screen-printed carbon electrode (CoPc/SPE) in couple with flow injection analysis (FIA) was developed for easy and selective analysis of ZPT in commercial hair-care products. Under the optimized FIA conditions, the CoPc/SPE yielded a linear calibration plot in the window of 6-576 muM with sensitivity and detection limit of 1.65 nA muM(-1) and 0.9 muM (i.e. 1.42 pg in 5 mul sample loop), respectively, in 0.1 M KOH solution at an applied potential of 0.3 V versus Ag/AgCl. Since the approach is simple, easy, selective, and inexpensive, it offers a potential application of daily ZPT analysis in hair-care products. (C) 2003 Elsevier B.V. All rights reserved.
ISSN: 0039-9140
DOI: 10.1016/j.talanta.2003.10.039
Appears in Collections:化學系所

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