防晒美白化妆品中TiO_2纳米颗粒的定性定量分析  

Qualitative and Quantitative Analysis of Titanium Dioxide in Cosmetics

作　　者：王素娟[1] 韦晓群 相大鹏[2] 栾天罡[1] 龚力[1] 刘洪涛[1] 赖志辉[1] 

机构地区：[1]中山大学测试中心,广东广州510275 [2]广东出入境检验检疫局检验检疫技术中心,广东广州510623

出　　处：《分析科学学报》2015年第5期667-671,共5页Journal of Analytical Science

基　　金：国家质检总局科技计划(No.2013IK151)

摘　　要：建立了分析不同种类、性状及形态的化妆品中TiO2纳米颗粒的样品制备技术和定性定量方法。实验使用乙酸乙酯、乙醇对化妆品逐步溶解、离心,去除大部分有机成分,通过透射电子显微镜(TEM)、X射线光电子能谱(XPS)、X射线粉末衍射(XRD)对纳米颗粒的形貌、元素化学态及结构进行定性表征,用电感耦合等离子体发射光谱(ICP-OES)对化妆品中的纳米颗粒进行定量测定。所建立的方法简单快捷,可用于一般化妆品中纳米TiO2的检测。Cosmetic products and other typical formulations that contain nanoparticles have become increasingly available in recent years.Titanium dioxide（TiO2）nanomaterial has been frequently employed in sunscreens as inorganic physical sun blockers.The interest in analysis of nanoparticles increased constantly during the past decade.However,because cosmetics are of different compositions and polydispersity,analysis is challenging.In this work,according to the requirement of different instruments to the states of samples,ethylacetate and ethanol was applied to remove most of the organic composition in cosmetics of different forms by stepwise dissolving and centrifuging.And an analytical platform coupling Transmission electron microscopy（TEM）,X-ray photoelectron spectrometry（XPS）,X-ray diffraction（XRD）and Inductively coupled plasma optical emission spectrometry（ICP-OES）was established and used for characterization and determination of size,structure and mass concentration of nanoparticles in cosmetics.

关 键 词：化妆品 纳米颗粒 TIO2 

分 类 号：O657.39[理学—分析化学]