摘要
本文建立了一种可快速检测化妆品中铅、砷、镓等重元素的方法。通过测量含多种不同浓度重元素的系列标准样品的X射线荧光谱(XRF),分析不同种类和浓度的重元素的X射线荧光,建立用于计算重元素含量的标准曲线,从而可根据待测样品的XRF和标准曲线确定化妆品中的重元素的种类和浓度。结果显示,X射线荧光谱检测方法与其他方法如原子吸收光谱法(AAS)相比有突出的优点:待测样品无需前处理,在数分钟内可快速得出检测结果,且灵敏度较高,多种重金属的检测限和检测误差约为1 mg/kg比国家标准允许的重元素含量低一个数量级。该方法(XRF法)操作简单,检出限低,灵敏度高,可用于化妆品重元素含量筛查。
To establish a method for the detection of heavy elements such as lead,arsenic,and gallium etc.in cosmetics,and to provide a method reference for judging whether some skin diseases are caused by improper selection of skin care products.A series of standard samples containing heavy elements of different concentrations was measured by X-ray fluorescence spectrum(XRF),the standard curves for calculating the content of heavy elements were established through the analysis of the X-ray fluorescence Vs heavy elements of different types and concentrations,and concentration of heavy elements in cosmetics can be determined according to the XRF of the sample to be tested and standard curves.Compared with other methods,such as atomic absorption spectrometry(AAS),X-ray fluorescence spectrometry has some outstanding advantages:the sample to be tested does not need pretreatment,and the test results can be obtained quickly in a few minutes,and with high sensitivity.The detection limit and detection error of various heavy metals are about 1 mg/kg,which is one order of magnitude lower than the heavy element content allowed by the national standard.The method(XRF method)is easy to operate and has low detection limits and high sensitivity,and can be used to screen the content of heavy elements in cosmetics.
作者
王椿曦
熊正烨
曾才兴
徐瑾仪
张泽锋
Wang Chunxi;Xiong Zhengye;Zeng Caixing;Xu Jinyi;Zhang Zefeng(Guangdong Ocean University,Zhanjiang 524088,China)
出处
《广东化工》
CAS
2024年第12期172-174,共3页
Guangdong Chemical Industry
基金
湛江科技计划项目(2022A05022)
发光材料与器件研究团队项目(CXTD2021018)
广东省研究生示范课程建设项目(2021SFKC050)。
关键词
X射线荧光谱
化妆品
重元素
检测
X-ray fluorescence(XRF)
cosmetics
heavy elements
detection
