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Determination of Magnesium Ascorbyl Phosphate in Cosmetic Bleaching Products Using a Disposable Screen‐Printed Carbon Electrode
Author(s) -
Shih Ying,
Zen JyhMyng
Publication year - 1999
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.199900117
Subject(s) - chemistry , magnesium , electrode , carbon paste electrode , carbon fibers , linear range , phosphate , detection limit , inorganic chemistry , chromatography , electrochemistry , organic chemistry , cyclic voltammetry , materials science , composite material , composite number
A preanodized screen‐printed carbon electrode is used for the determination of magnesium ascorbyl phosphate in cosmetic bleaching products. The preanodization process exhibits a marked enhancement of the current response of magnesium ascorbyl phosphate at the screen‐printed carbon electrode. The linear range is up to 240 (correlation coefficient = 0.999) in pH 2.0 citrate buffer with a detection limit (S/N = 3) of 0.33 μM. The electrode has the advantages of low cost and easy of handling and can be either disposable or reused since the renewal gives a good reproducible surface. Quantitative analysis was performed by the standard addition method for magnesium ascorbyl phosphate content in cosmetic products.