Objective To establish a microwave digestion-inductively coupled plasma mass spectrometry(ICP-MS)method for the determination of 13 kinds of the rare earth elements in Pingyin Rose and its products.Methods The samples were digested by microwave and added online with 103Rh,115In and 185Re as internal standard elements,and ICP-MS was used for quantitative determination.The accuracy of the method was verified by using two national certified reference materials.Results The mass concentration of each rare earth elements had a good linear relationship in the range of 0.1-20 μg/L(r≥0.9996),the limits of detection were 0.072-0.258 μg/kg,the average recoveries were 87%-116%,and the relative standard deviations(RSDs)were 0.8%-4.3%.The results of actual samples analysis showed that 13 rare earth elements were detected in roses and their products,with the highest average content of Ce and the lowest average content of Lu.Conclusion The method is rapid,accurate,easy to operate,of high sensitivity and recovery rate,and can be used in the determination of rare earth elements in roses and rose products.
关键词
平阴玫瑰/稀土元素/微波消解/电感耦合等离子体质谱法
Key words
Pingyin rose/rare earth element/microwave digestion/inductively coupled plasma mass spectrometry(ICP-MS)
维普
万方数据