便携式X射线荧光光谱法快速检测化妆品中汞  

Rapid detection of mercury in cosmetics by portable X-ray fluorescence spectrometer

作　　者：梁剑锋 李亚 梁燕妮[1] 卓梅芳[1] 杨韶平[1] LIANG Jian-feng;LI Ya;LIANG Yan-ni;ZHUO Mei-fang;YANG Shao-ping(School of Chemical Engineering and Resource Recycling,Wuzhou University,Wuzhou,Guangxi 543002,China)

机构地区：[1]梧州学院化学工程与资源再利用学院,广西梧州543002

出　　处：《日用化学工业》2021年第1期68-72,77,共6页China Surfactant Detergent & Cosmetics

基　　金：梧州学院重点科研项目(2020B008);广西高校中青年教师基础能力提升项目(2017KY0637);广西科技重大专项(桂科攻AA18118001)。

摘　　要：建立便携式X射线荧光光谱仪分析技术快速检测化妆品中汞含量的方法。通过配制不同含量汞的化妆品标准物质,优化便携式X射线荧光光谱仪仪器参数:土壤分析模式,主范围时间150 s,低范围时间5 s,轻范围时间5 s,标准偏差1σ,厚度不修正。经过方法验证,以固体、膏状、乳液3种空白化妆品考察基质,结果显示,方法检出限为1.0 mg/kg,灵敏度≥95%、特异性≥85%、假阴性≤5%、假阳性≤15%。在104批次实际样品检测过程中,与国标方法结果比较相对误差在5.93%~14.58%之间。该方法快捷、简单,可以在化妆品汞超标应急事件、化妆品日常监督抽检中对汞含量进行快速检测。This paper established a method using portable X-ray fluorescence spectrometer to rapidly detect of mercury content in cosmetics.The instrument parameters of portable X-ray fluorescence spectrometer were optimized by preparing cosmetics reference materials with different contents of mercury:soil analysis mode,main range time 150 s,low range time 5 s,light range time 5 s,standard deviation 1σ,thickness was not corrected.After verification of the method,three kinds of blank cosmetics,solid matrix,paste and emulsion were used to examine the matrix.The results show that the detection limit is 1.0 mg/kg,sensitivity is more than 95%,specificity is more than 85%,false negative is less than 5%,and false positive is less than 15%.In the detection process of 104 batches of actual samples,the relative error is 5.93%-14.58%compared with the results of national standard method.The method is fast and simple,and can be used for quick detection of mercury content in cosmetics in the emergency incident of cosmetic mercury exceeding the standard and in the daily supervision and sampling of cosmetics.

关 键 词：便携式X射线荧光光谱仪 化妆品 汞元素 快速检测 元素分析 

分 类 号：TQ658[化学工程—精细化工]