Determination of 16 impurity elements in rhodium powder by ICP-AES
The rhodium powder sample was digested with hydrochloric acid-hydrogen peroxide under high temperature and high pressure conditions,and 16 impurities were determined by inductively coupled plasma emission spectrometer(ICP-AES).Spectral interference studies,spectral line selection,spiking recovery,precision,and matrix matching alignment tests were performed.The method is simple,fast and accurate,with its determination range of 0.0005%～0.10%,RSD between 0.5%and 5.73%,and the spike recovery rate is between 97.0%and 108.1%.The results of different methods are in good agreement.This method can meet the determination requirements of 16 impurity elements in rhodium powder.
analytical chemistrysuper microwave digestionrhodium powderICP-AESimpurity element
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