微波消解-ICP-OES法测定化妆品中二氧化钛含量  

Microwave Digestion ICP-OES Method for Determining Titanium Dioxide Content in Cosmetics

作　　者：单瑞娟 Shan Ruijuan(SGS-CSTC Standards Technical Service(Shanghai)Co.,Ltd.,Shanghai 200233,China)

机构地区：[1]通标标准技术服务(上海)有限公司,上海200233

出　　处：《广东化工》2024年第13期124-126,共3页Guangdong Chemical Industry

摘　　要：建立了微波消解-电感耦合等离子体光谱法(ICP-OES)测定化妆品中二氧化钛含量的测试方法。化妆品样品经过混合酸微波消解工艺处理后,采用电感耦合等离子体光谱法(ICP-OES)以测定其中二氧化钛的含量,其线性范围在0.1 mg/L~2.0 mg/L区间,本方法的相关系数高于0.999,展现出卓越的线性关系;同时其检出限可达至0.94 mg/kg,回收率高达90%~110%,相对标准偏差(RSD)为1.93%~2.32%。结果表明,该方法可批量处理样品,该方法凭借其检测速度高效、灵敏度高以及精密度和准确度优良等优势,能够充分满足化妆品中二氧化钛含量测定的需求。A novel testing method has been established for determining the content of titanium dioxide in cosmetics through Microwave Digestion-Inductively Coupled Plasma Optical Emission Spectrometry(ICP-OES).The cosmetic samples,after undergoing microwave-assisted digestion with mixed acids,were subjected to ICP-OES analysis to quantify their titanium dioxide content.This method exhibits a linear range spanning from 0.1 to 2.0 mg/L,with an outstanding linearity demonstrated by a correlation coefficient surpassing 0.999.Additionally,it boasts a detection limit as low as 0.94 mg/kg and achieves recovery rates ranging from 90%to 110%,accompanied by relative standard deviations(RSDs)between 1.93%and 2.32%.The results indicate that this method is amenable to batch processing and,due to its attributes of high throughput,sensitivity,precision,and accuracy,it effectively meets the requirements for the determination of titanium dioxide concentrations in cosmetic products.

关 键 词：微波消解 电感耦合等离子体发射光谱仪 二氧化钛 化妆品 

分 类 号：TQ651[化学工程—精细化工]