2014•Detergent & CosmeticsRequires access
Trace analysis of cadmium in cosmetics by cold-vapor generation- atomic absorption spectrometry with microwave digestion
HU Jia-we
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Abstract
A method for the determination of trace amounts of cadmium in cosmetics by cold-vapor generation-atomic absorption spectrometry with microwave digestion was developed. The samples were digested by microwave and the temperature and time of microwave digestion were optimized. Such factors affecting the determination as flow rate of carrier gas, acidity, amount of added sensitizer and interference from coexisted ions were investigated. Under the optimal test conditions, the liner concentration range of the method was between 0~40 μg/L; the limit of detection of cadmium was 0.050 μg/L, the recovery range of standard addition was 95.4%~103.3% and relative standard deviation(RSD) below4.6 %.