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Flow Injection Analysis of Ascorbyl Glucoside in Cosmetics by a Disposable Printed‐Circuit Board Waste Modified Electrode
Author(s) -
Shih Ying,
Zen JyhMyng
Publication year - 2006
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200600113
Subject(s) - chemistry , ascorbic acid , flow injection analysis , electrode , cosmetics , printed circuit board , detection limit , electrochemistry , copper , chromatography , organic chemistry , food science , computer science , operating system
Ascorbyl glucoside, i.e., ascorbic acid 2‐glucoside (AA‐2G), is anew type of stable vitamin C derived compound used in many cosmetic skin‐lightening formulations, but rarely studied in the literature. In this study, a screen printed electrode modified with copper‐enriched printed circuit‐board waste (designated as Cu PCB /SPE) was applied to study the electrochemical characteristics of AA‐2G. Cyclic voltammogram of the Cu PCB /SPE showed an electrocatalytic oxidative feature at ˜0.6 V vs. Ag/AgCl in 0.15 M NaOH solution. Flow injection analysis coupled with the Cu PCB /SPE was further developed for sensitive AA‐2G determination. The calibration plot was linear in the window of 2.5–160 ppm with slope and regression coefficient of 0.0169 μA/ppm and 0.9971, respectively. The detection limit (S/N = 3) was 0.247 ppm. Real sample analysis was demonstrated for different skin‐lightening cosmetic products with appreciable results.