Analysis of impurities in silver matrix by atomic absorption spectrophotometry

A procedure for the analysis of aluminium, chromium, copper, lead mercury, nickel and zinc mainly using flame less atomic absorption spectrophotometry has been described. The results depict that the presence of silver does not introduce any significant interference, when standards are prepared in matching silver matrix solutions The calibration curves obey the straight-line equations passing through the origin. Thus the separation of silver matrix from the analyte solutions is not necessary. The method has been successfully applied for the analysis of silver foils, wires, battery grade silver oxides and silver nitrate samples containing analyte elements in the concentration range 2 to 40 ppm.