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日用化学工业 ›› 2021, Vol. 51 ›› Issue (10): 1018-1025.doi: 10.3969/j.issn.1001-1803.2021.10.014

• 分析与检测 • 上一篇    下一篇

高效液相色谱法同时测定防晒类化妆品中23种禁限用组分的含量

尚姝,冯有龙,方方()   

  1. 江苏省食品药品监督检验研究院,江苏 南京 210019
  • 收稿日期:2021-05-18 修回日期:2021-09-27 出版日期:2021-10-22 发布日期:2021-10-21
  • 通讯作者: 方方
  • 基金资助:
    江苏省市场监督管理局科技计划项目(KJ207560)

Simultaneous determination of 23 prohibited or restricted components in sunscreen cosmetics by high performance liquid chromatography

Shang Shu,Feng Youlong,Fang Fang()   

  1. Jiangsu Institute for Food and Drug Control, Nanjing, Jiangsu 210019, China
  • Received:2021-05-18 Revised:2021-09-27 Online:2021-10-22 Published:2021-10-21
  • Contact: Fang Fang

摘要:

建立了高效液相色谱法同时测定防晒类化妆品中23种禁限用组分的含量。样品加混合溶剂或四氢呋喃溶解后,混匀,超声提取30 min,用混合溶剂或四氢呋喃稀释至刻度,用微孔滤膜过滤,经Kromasil C18柱分离,以0.1%甲酸-甲醇-四氢呋喃为流动相进行梯度洗脱,流速为1.0 mL/min,柱温为35 ℃,检测波长为311 nm,用标准曲线法进行定量计算。方法学研究表明,23种防晒剂禁限用组分在一定浓度范围内与峰面积的线性关系良好,R值均大于0.998 4,方法检出限为0.01%~0.04%。在低、高两种加标水平下,两种基质(防晒霜和唇膏)中23种防晒剂禁限用组分的回收率均在85.6%~113.2%之间,RSD在0.4%~5.4%之间,说明本方法对测定禁限用组分的准确性较高。本方法在《化妆品安全技术规范》(2015年版)收载方法基础上进行了优化,使检测过程中各组分的稳定性更好。

关键词: 高效液相色谱法, 防晒类化妆品, 禁限用物质

Abstract:

High performance liquid chromatography (HPLC) method for simultaneous determination of 23 prohibited or restricted components in sunscreen cosmetics was established. The sample was dissolved and mixed with tetrahydrofuran or a mixed solvent, extracted by sonicating for 30 min, diluted with tetrahydrofuran or a mixed solvent, and filtered by a microporous membrane. For HPLC analysis, the sample was separated by Kromasil C18 column, and gradient elution was performed with 0.1% formic-methanol-tetrahydrofuran as the mobile phase, with the flow rate of 1.0 mL/min, column temperature of 35 ℃, detection wavelength of 311 nm. The quantitative determination was applied by standard curve method. The results show that there is a good linear relationship between the concentration of 23 prohibited or restricted components and the peak area is in a certain range, with the R values all greater than 0.998 4. The detection limits of the method are 0.01%-0.04%. At low and high spiked levels, the recoveries of the two substrates (sunscreen and lip balm) ranged from 85.6%-113.2%, with RSDs ranging from 0.4%-5.4%. This method is optimized on the basis of the loading method in Safety and Technical Standards for Cosmetics (2015 Edition), so that the stability of each component in the detection process is better. On the basis of the “specification” detection method in this paper, the extraction solvent and the kind of mobile phase of the test sample solution is optimized. The new method can simultaneously determine amino acid and diphenyl ketone-2 of 23 kinds of sunscreen, improve the efficiency of the detection, enhance the stability of the component under test condition and ensure the stability of the measured component accuracy. In this paper, HPLC method was used to establish a simultaneous detection method for 23 kinds of prohibited or restricted sunscreen substances, and the extraction solvents and mobile phase types of the tested solutions were optimized. The new method overcomes the inaccuracy of the detection results caused by the easy oxidation of cresol trazole trisiloxane and other contained detection methods in the Code. The new method can simultaneously determine 23 kinds of sunscreens such as p-aminobenzoic acid and diphenylketone-2, which greatly improves the detection efficiency. The new method is proved to be accurate and repeatable, and is suitable for the inspection and detection of sunscreen cosmetics.

Key words: high performance liquid chromatography, sunscreen cosmetics, prohibited or restricted components

中图分类号: 

  • TQ658