Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/69679
標題: Selective Determination of Arbutin in Cosmetic Products Through Online Derivatization Followed by Disposable Electrochemical Sensor
作者: Zen, J.M.
Yang, H.H.
Chiu, M.H.
Yang, C.H.
Shih, Y.
期刊/報告no:: Journal of Aoac International, Volume 94, Issue 3, Page(s) 985-990.
摘要: An online derivatization followed by a disposable electrochemical sensor was used for the determination of arbutin (AR) in cosmetic products. The AR was chemically oxidized by MnO(2) and subsequently reduced at inexpensive screen-printed carbon electrodes using a low detection potential which improved the selectivity of the method. The effects of various parameters, such as solution pH, detection potential, and flow rate of the mobile phase, were studied in detail. Under optimal conditions [pH 1.6 (0.1 M H(3)PO(4)), detection potential 0.0 V (versus Ag/AgCl), flow rate 0.6 mL/min] the linear range for AR was 0.1-1500 ppm (r(2) = 0.999) with LOD of 30.06 ppb (S/N = 3). The practical application of the proposed method was demonstrated by the determination of arbutin concentration in commercial cosmetic products.
URI: http://hdl.handle.net/11455/69679
ISSN: 1060-3271
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