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標題: Detection of Aluminum Chlorohydrate Content in Antiperspirant Deodorants Using Screen-Printed Silver Electrodes by One Drop Analysis
作者: Zen, J.M.
Yang, T.H.
Kumar, A.S.
Chen, Y.J.
Hsu, J.C.
Shih, Y.
關鍵字: Aluminum chlorohydrate;Screen-printed silver strip;Antiperspirant;breast-cancer;chlorohydrate
Project: Electroanalysis
期刊/報告no:: Electroanalysis, Volume 21, Issue 20, Page(s) 2272-2276.
Aluminum chlorohydrate (Al(2)(OH)(5)Cl center dot 2H(2)O, ACH) is an active ingredient in many antiperspirants and deodorants formulation to reduce the body odors (mainly sweat) through interaction with apocrine sweat glands to produce insoluble aluminum hydroxide and free chloride, which then plugs the sweat gland that stops the flow of sweat to the skin's surface. We demonstrated here an one drop (50 mu L) electrochemical sensing of the ACH using an in-built three screen-printed electrodes assembly containing Ag as working and pseudo reference and carbon as counter electrode system (AgSPE). The free Cl(-) ion librated from ACH/H(2)O reaction was detected at AgSPE surface at 0.072 V vs. pseudo Ag reference electrode system in pH 2 phosphate Solution by Cyclic voltammetric Technique. Under optimal working condition the AgSPE shows a linear calibration plot in the window of 30-2000 ppm of ACH with sensitivity and regression values of 0.104 mu A/ppm and 0.998 respectively. Calculated detection limit is 3.03 ppm. RSD values of intra- and interassays were 0.19% and 2.79% respectively. Finally, real sample (antiperspirant deodorant lotions) assays were successfully demonstrated with results comparable to the predicted values.
ISSN: 1040-0397
DOI: 10.1002/elan.200904670
Appears in Collections:化學系所

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