DETERMINATION OF ADDITIVES IN COSMETICS BY MICELLAR ELECTROKINETIC CAPILLARY CHROMATOGRAPHY
作者:
MaryC. Boyce,
EvadneE. Spickett,
期刊:
Journal of Liquid Chromatography & Related Technologies
(Taylor Available online 2000)
卷期:
Volume 23,
issue 11
页码: 1689-1697
ISSN:1082-6076
年代: 2000
DOI:10.1081/JLC-100100445
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A micellar electrokinetic capillary chromatography (MECC) method suitable for the determination of antioxidants and preservatives permitted in cosmetic products is described. Unlike reversed phase high performance liquid chromatography (HPLC) this method simultaneously separates ionic solutes (sorbic acid and benzoic acid) and non-polar components (butylated hydroxytoluene and dodecyl gallate). A buffer consisting of 15 mM sodium dodecyl sulfate, 35 mM sodium cholate, 10 mM boric acid, and 10 mM sodium tetraborate adjusted to pH 9.5 and an 80 cm (total length) bare fused silica column gave good separations. The determination of additives in some cosmetic products was performed using both MECC and HPLC. There was good agreement between the methods.
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