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China Surfactant Detergent & Cosmetics ›› 2023, Vol. 53 ›› Issue (8): 981-988.doi: 10.3969/j.issn.2097-2806.2023.08.016

• Analytical methods and testing • Previous Articles    

Determination of eight organic acids such as lactobionic acid in cosmetics by ultra performance liquid chromatography-tandem mass spectrometry

Zhang Xin,Huo Yongli*()   

  1. Guangzhou Eggshell Network Technology Co., LTD, Guangzhou, Guangdong 510200, China
  • Received:2022-07-22 Revised:2023-07-26 Online:2023-08-22 Published:2023-08-28
  • Contact: Yongli Huo E-mail:jennyhuo@homefacialpro.com.

Abstract:

The study aims to establish a method for the determination of eight organic acids in cosmetics, including lactobionic acid, L-lactic acid, citric acid, succinic acid, DL-mandelic acid, ferulic acid, azelaic acid and lipoic acid, by ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The chromatographic column was Waters ACQUITY UPLC® HSS T3 column (1.8 μm, 2.1 mm×100 mm) with methanol-water (volume ratio 50∶50) as the extraction solution and ammonium acetate (pH=2.6) -water-acetonitrile as the mobile phases. The flow rate is 0.35 mL/min and the column temperature is 35 ℃. The electrospray ion (ESI) source, negative ions scanning method and multiple reaction monitoring (MRM) mode are used to determine the content. There are good linear relationships (R2≥0.99) and the peak area of the eight organic acids are 2.52-10.10, 4.54-18.16, 2.82-15.30, 2.30-9.22, 2.41-9.63, 2.27-9.08, 2.33-9.33, and 2.16-8.65 μg/mL, respectively. Their minimum limits of quantitation (LOQ) are as low as 0.003 μg/g. The RSDs of precision, stability and repeatability tests are all less than 7.79%. The recoveries of high, medium and low concentrations range from 86.52% to 119.98%, with RSD ranging from 0.55% to 4.74%. The method has high accuracy, good repeatability and fast speed, and is suitable for the simultaneous determination of eight organic acids in cosmetics.

Key words: UPLC-MS/MS, cosmetics

CLC Number: 

  • TQ658