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Updated: Jun 17, 2026

Preparation of Food Samples Using Homogenization and Microwave-Assisted Wet Acid Digestion for Multi-Element Determination with ICP-MS
Published on: December 22, 2023
[15 rare earth elements in cosmetics determined by inductively coupled plasma-mass spectrometry]
Peiyao Tian1, Yuhong Liu, Ping Wang
1Center for Disease Prevention and Control, Bejing 100013, China.
Objective:
To establish an ICP-MS method for the simultaneous determination of 15 rare earth elements (REEs) in Cosmetics.
Methods:
Cosmetics were digested with HNO3 + H2O2 by microwave oven. An interference-free isotope was chosen for earth REE as 89Y, 139 La, 140Ce, 141Pr, 146Nd, 147Sm, 153Eu, 157Gd, 159Tb, 163Dy, 165Ho, 166Er, 169Tm, 172Yb, 175Lu, 15 REEs were determined by ICP-MS.
Results:
The correlation coefficient r > or = 0.9998. The recovery rates and relative standard deviations could 89.3%-114.6% and 1.45%-7.93%. In the detection for real samples, La, Ce, Nd and Y were detected in creamy samples. 13 REEs in powdery samples, were detected except for Tm, Lu. Maybe their raw material source were different.
Conclusion:
The results indicated that the method could be simple, rapid, sensitive and accurate, which could meet the demand of the simultaneous determination for 15 rare earth elements analysis in Cosmetics.
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