Ion-exchange method for separation and concentration of platinum and palladium for analysis of environmental samples by inductively coupled plasma atomic emission spectrometry

摘要

An ion-exchange procudure is proposed for determination of Pt andPd in environmental samples,using a Dowex 1-X10 anion-exchange resin.pt and Pd were separated from the matrix elements in the sample by selective retention on the column as anionic chloro complexes and subsequent elutionby circulated thiourea at 60degC.The eluent,containing Pt and Pd was analyzed by inductivley coupled plasma (ICP0 atomic emission spectrometry(AES).Average recoveries of 98% and detection limit of 15 ng/g for both metals were achieved.Analysis of Pt and Pd concentrations inroad dust,sampled fromseveralsites in Germany was performed.The comparison of the obtained data with the concentrations of Pt and Pd in the same samples,determined by ICP-MS showed a very good agreement.