Determination of 22 trace elements in high-purity copper including Se and Te by ETV-ICP OES using SF 6 , NF 3 , CF 4 and H 2 as chemical modifiers

Experiments with SF 6 , NF 3 , CF 4 and H 2 as new modifier gases for the matrix studied were performed. Pre-treatment steps of sub-samples ( e.g. , roasting) can now be omitted; the scope of application was enlarged to Au and hydride forming elements (such as Se, Te).