Simultaneous Determination of Lead,Tin and Zinc in Tin-bronze by ICP-AES

Tin bronze sample was dissolved in a mixture of 5 mL of HNO3(1+1) and 3 mL of HCl(1+1),and the solution was diluted to 100 mL in volumetric flask,which was used for the ICP-AES analysis.Analytical conditions,including the working condition of the spectrograph,choice of analytical spectral lines and etc.,were tested and optimized.Values of detection limit (3S) of lead,tin and zinc were found to be 0.069,0.091 and 0.088 mg·L-1 respectively.Recovery and precision of the method were tested,giving values of recovery in the range from 102.7% to 103.3% and values of RSD′s (n=6) in the range of 0.7%-1.4%.