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
Key words
microwave digestion/inductively coupled plasma mass spectrometry/titanium dioxide/cosmetics
维普
万方数据