Dissolution of antimony alloy, tin alloy and metallic germanium using nitric-hydrochloric-tartaric acids for ICP-OES

In determining the constituent elements of various alloys by ICP-OES, compl ete dissolution of the samples is indispensable. It is effective to use a d issolvent containing complexing agents to dissolve samples in which the con stituent elements are easily hydrolyzed, because the hydrolysis of antimony and tin could be prevented by using a HNQ(3)-HCl mixture containing tartar ic acid in these elements. By a dissolution method using a HNO3HCl mixture containing tartaric acid, the constituent elements in antimony and tin allo ys could be exactly determined without the hydrolysis of analytical element s. Furthermore, when a mixed dissolvent of 35 mi of HNO3 (diluted 1 + 1), 5 ml of HCl (diluted 1 + 1) and 1 g of tartaric acid was used, metallic germ anium could be completely dissolved without volatilization as the chloride.