Chinese Journal of Chromatography ›› 2018, Vol. 36 ›› Issue (9): 904-910.DOI: 10.3724/SP.J.1123.2018.04014

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Simultaneous determination of 12 direct dyes in cosmetics by high performance liquid chromatography

PAN Cheng, WU Ling, XIE Yong, XU Wenqi, BAI Yang, HUANG Yonghui, HU Chaoyang   

  1. Fujian Inspection and Research Institute for Product Quality, Fuzhou 350002, China
  • Received:2018-04-12 Online:2018-09-08 Published:2014-08-05
  • Supported by:

    Subject of Fujian Inspection and Research Institute for Product Quality (No. KY201526A).

Abstract:

A method was developed for the simultaneous separation and determination of 12 direct dyes in cosmetics by high performance liquid chromatography (HPLC). The analytes were separated on an XB-C18 column with acetonitrile-0.02 mol/L ammonium acetate aqueous solution (pH 9.0) as the mobile phases, and were detected using a diode array detector. The results indicated that the 12 direct dyes had good linearities with correlation coefficients greater than 0.999. The limits of detection were between 0.017 μ g/g and 1.7 μ g/g. The average recoveries ranged from 85.6% to 113.4%, and the relative standard deviations (RSDs) ranged from 1.0% to 7.7%. The intra-and inter-day RSDs were 0.4%-6.5% and 0.2%-7.5%, respectively. The method is simple, rapid, accurate, and is suitable for the determination of direct dyes in cosmetics.

Key words: cosmetics, direct dyes, high performance liquid chromatography (HPLC)

CLC Number: