Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/34864
標題: Determination of tranexamic acid in cosmetic products by high-performance liquid chromatography coupled with barrel plating nickel electrode
作者: Shih, Y.
曾志明
Wu, K.L.
Sue, J.W.
Kumar, A.S.
Zen, J.M.
關鍵字: Tranexamic acid
Disposable
Barrel plating nickel electrode
Cosmetics
epsilon-aminocaproic acid
flow-injection analysis
cardiopulmonary
bypass
alkaline-solution
derivatization
oxidation
plasma
formulations
hydroxide
chromium
期刊/報告no:: Journal of Pharmaceutical and Biomedical Analysis, Volume 48, Issue 5, Page(s) 1446-1450.
摘要: Tranexamic acid (TA) is an important reagent in cosmetic skin-whitening formulation and a drug for the inhibition of plasminogen to plasmin in blood. Since there is no chromophore in tranexamic acid molecule to enable direct analysis by UV-visible absorption spectrophotometry, derivatization is thus required by excluding use of UV or fluorescence detection. We report here a relatively simple electrochemical TA detection method by using a barrel plating nickel electrode. Chromatographic separation was performed on a Hamilton PRP-X100 anion-exchange column (150mm x 4.1 mm i.d., 10 mu m particle size) with a (85:15, v/v) mixture of 0.1 mol 1(-1) NaOH and acetonitrile as mobile phase and pumped at a flow rate of 0.9 ml min(-1). By detecting at +0.55 V vs. Ag/AgCl, the calibration plot was linear in the concentration window of 3-1000 ppm with regression coefficient and detection limit (S/N=3) of 0.9993 and 0.13 ppm (0.84 mu mol 1(-1)), respectively. Successive injections (n= 10) of 50 ppm tranexamic acid showed a R.S.D. value of only 0.3% indicating good reproducibility of the proposed system. The method was successfuliy applied to the analysis of the content of tranexamic acid in cosmetic products and proved to be suitable for rapid and reliable quality control. (C) 2008 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/11455/34864
ISSN: 0731-7085
文章連結: http://dx.doi.org/10.1016/jjpba.2008.09.019
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