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[Determination of aluminium and barium in silicon-aluminium-barium alloy with internal standard by ICP-AES].

A method for the determination of aluminium and barium in silicon-aluminium-barium alloy with the internal standard by ICP-AES was studied. The method of melting sample, the interference of dissolved acid and coexisting elements and the working parameters were experimented. The sample was melted by appropriate acid, was changed into solution, the calculating lines were made by standard solution of aluminium and barium, then the concentrations of aluminium and barium were determined by ICP-AES. The linear rang, detection limits and RSD of the method were examined. The method was simple and the results were accurate.