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China Surfactant Detergent & Cosmetics ›› 2020, Vol. 50 ›› Issue (9): 643-647.doi: 10.3969/j.issn.1001-1803.2020.09.011

• Analytical methods and testing • Previous Articles     Next Articles

Determination of cimetidine and ranitidine in cosmetics by high performance liquid chromatography-tandem mass spectrometry

WANG Cong(),LI Li(),WANG Hai-yan,SUN Lei   

  1. National Institutes for Food and Drug Control, Beijing 100050, China
  • Received:2019-12-19 Revised:2020-08-28 Online:2020-09-22 Published:2020-09-23
  • Contact: Li LI E-mail:wangcong351@126.com;lili_nicpbp@126.com

Abstract:

A high performance liquid chromatography-tandem mass spectrometric method was established for determination of cimetidine and ranitidine in cosmetics. Samples were extracted by methanol ultrasonically, and then filtered through a 0.2 μm membrane. After separated by a ZORBAX SB-Aq column, samples were detected by MRM with electrospray ion source in positive mode. Matrix-matched external standard calibration curves were used for quantitative analysis. The concentration limits of detection of cimetidine and ranitidine were 0.03 and 0.02 ng/g, respectively. In the mass concentration range of 1-100 ng/mL, cimetidine and ranitidine showed good linear relationship with correlation coefficients all above 0.999.The recoveries for cimetidine and ranitidine at three spiked levels were in the range of 84.9%-116.2%, and the relative standard deviations of their recoveries were not more than 5%. This method was able to be applied in determination of cimetidine and ranitidine in cosmetics with simple pretreatment, good linearity and high recovery.

Key words: cosmetics, cimetidine, ranitidine, antihistamine, high performance liquid chromatography-tandem mass spectrometric method

CLC Number: 

  • TQ658