After 6 mL nitric acid and 1 mL hydrofluoric acid are used for microwave digestion,and the soil is treated with perchloric acid,the contents of 16 rare earth elements in the soil are determined by inductively coupled plasma mass spectrometer.103Rh is used as internal standard to eliminate interference. The experimental results show that the detection limit of the method is 0.0018～0.0365 μg/L,and the accuracy and feasibility of the method are verified by the national standard material,and the relative standard deviation measured to be 1.9％～8.8％,and the relative error is measured to be 70.1％～107.9％. The test results and test data are analyzed,and the results show that the mi-crowave digestion method and inductively coupled plasma mass spectrometer for the determination of rare earth ele-ments in soil is simple and the cost is relatively low,which can meet the requirements of experimental analysis.
关键词
微波消解/稀土元素/电感耦合等离子体质谱/土壤/标准物质
Key words
microwave digestion/rare earth elements/inductively coupled plasma mass spectrometry/soil/reference materials
维普
万方数据