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China Surfactant Detergent & Cosmetics ›› 2019, Vol. 49 ›› Issue (6): 415-418.doi: 10.3969/j.issn.1001-1803.2019.06.012

• Analytical methods and testing • Previous Articles    

Determination of para red in lip cosmetics by high performance liquid chromatography

HOU Guang-yue,ZHOU Li-li(),BIAN Ying-fang,XU Shi-ming,DU Ying,ZOU Hui-ling   

  1. National Supervision and Inspection Center for Processed Food Quality(Shandong),Shandong Product Quality Inspection Research Institute, Jinan, Shandong 250102, China
  • Received:2018-10-31 Revised:2019-05-30 Online:2019-06-22 Published:2019-06-24
  • Contact: Li-li ZHOU E-mail:sdqizhoulili@126.com

Abstract:

A high performance liquid chromatography(HPLC)method for the rapid determination of para red in lip cosmetics was established. The sample was dispersed by trichloromethane, ultrasonically extracted with acetonitrile, filtered, separated by a Waters SunFire C18 column(4.6 mm×250 mm, 5 μm), and eluted equivalently with acetonitrile-water solution(volume ratio 85:15)as mobile phase. The elution was performed at a flow rate of 1.0 mL/min and the column temperature was set at 30 ℃. The analysis was done using photo-diode array detector. External standard approach was used for quantification. The results indicate that para red has a good linear relationship in the range of 0.1-10 mg/L and the correlation coefficient is 0.999 9. The limit of detection(LOD)is 0.20 μg/g, while the limit of quantification(LOQ)is within 0.60 μg/g. The average recoveries were in the range of 94.3%-103.8% at three spiked concentrations. The method is simple, rapid, accurate and reproducible, and is suitable for the determination of para red in lip cosmetics.

Key words: cosmetics, high performance liquid chromatography, para red

CLC Number: 

  • TQ658