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China Surfactant Detergent & Cosmetics ›› 2024, Vol. 54 ›› Issue (12): 1532-1540.doi: 10.3969/j.issn.2097-2806.2024.12.016

• Analytical methods and testing • Previous Articles    

Determination of 13 preservatives in cosmetics by high performance liquid chromatography and verification by mass spectrometry

Po Zou1,Wei Xu1,Xueyan Li1,Changyu Li2,*(),Yan Chen1,Qinqin Chen1   

  1. 1. Hangzhou Huaningxiang Biotechnology Co., Ltd., Hangzhou, Zhejiang 310000, China
    2. Zhejiang Fangyuan Test Group Co., Ltd.,Hangzhou, Zhejiang 310000, China
  • Received:2024-01-17 Revised:2024-12-02 Online:2024-12-22 Published:2024-12-25
  • Contact: * E-mail: 89087252@qq.com.

Abstract:

A method using high performance liquid chromatography (HPLC) was developed for the simultaneous determination of 13 preservatives (levulinic acid, p-hydroxyacetophenone, raspberry ketone, p-anisic acid, caprylhydroxamic acid, hydroxyethoxyphenyl butanone, methylisothiazolinone, phenoxyethanol, benzoic acid, methylparaben, chlorphenesin, dehydroacetic acid, and 5-bromo-5-nitro-1,3-dioxane) in cosmetics. Different types of samples were ultrasonically extracted by methanol, then the separation of 13 preservatives was carried out on a column of Agilent ZORBAX Eclipse XDB-C18 (250 mm×4.6 mm, 5 μm) by gradient elution at a flow rate of 1.0 mL/min, using 0.1% phosphoric acid solution and acetonitrile as mobile phases. The column temperature was 30 ℃, and the detection was completed by a diode array detector with the wavelengths at 275, 230 and 210 nm. Suspected positive samples were further confirmed by liquid chromatography-tandem mass spectrometry or gas chromatography-mass spectrometry. The linear regression analysis data shows good linearity for 13 preservatives in the respective mass concentration range, with their correlation coefficients (r) greater than 0.999 8. The limits of detection (LODs) and limits of quantitation (LOQs) of the method are in the ranges of 0.4-100.0 mg/kg and 1.2-250.0 mg/kg, respectively. At three spiked levels, the average recoveries for 13 target compounds in three kinds of matrix samples are within 84.0%-115.4%, and the relative standard deviations (RSD) are within 0.5%-4.8% (n = 6). This method is convenient, efficient, and precise, which can be used for qualitative and quantitative analysis of common preservatives in daily cosmetics.

Key words: preservatives, cosmetics, high performance liquid chromatography, mass spectrometry

CLC Number: 

  • TQ658