表面增强拉曼光谱法快速检测化妆品中防腐剂
Rapid detection of preservatives in cosmetics by surface enhanced Raman spectroscopy
张雯 1杨莹 1庞贝妮1
作者信息
- 1. 上海市质量监督检验技术研究院/国家保洁产品质量监督检验中心,上海 200233
- 折叠
摘要
目的 实现化妆品中苯甲酸与山梨酸两种常见防腐剂的现场快速检测,提高检测效率和现场检测能力.方法 使用便携式拉曼光谱仪,以银纳米粒子作为表面增强拉曼光谱(surface enhanced raman spectroscopy,SERS)的增强基底,检测化妆品中的苯甲酸和山梨酸钾.结果 苯甲酸和山梨酸分别在 1157 cm-1 和 871 cm-1处具有特征拉曼谱峰,同时进一步研究表明,苯甲酸和山梨酸的浓度与其特征拉曼谱峰强度线性相关,故可实现定量检测,用传统液相色谱法确证,定量结果一致.结论 该SERS方法具有简单、快速、高效等优点,有望实现防腐剂的现场快速检测.
Abstract
Objective:To achieve rapid on-site detection of benzoic acid and sorbic acid,two common preservatives in cosmetics,and improve detection efficiency and on-site detection capabilities.Methods:A portable Raman spectrometer which used silver nanoparticles as the enhancement substrate for surface enhanced Raman spectroscopy(SERS)was used to detect benzoic acid and potassium sorbate in cosmetics.Results:Benzoic acid and sorbic acid had characteristic Raman peaks at 1157 cm-1 and 871 cm-1,respectively.Further research showed that the concentrations of benzoic acid and sorbic acid were linearly correlated with the intensity of their characteristic Raman peaks,making quantitative detection possible.This was confirmed by traditional liquid chromatography,and the quantitative results were consistent.Conclusion:This SERS method has the advantages of simplicity,speed,and efficiency,and is expected to achieve rapid on-site detection of preservatives.
关键词
表面增强拉曼光谱/便携式拉曼光谱仪/防腐剂/现场快速检测Key words
surface enhanced Raman spectroscopy/portable Raman spectrometer/preservative/on-site rapid detection引用本文复制引用
出版年
2024
NETL
NSTL
万方数据