ISO 12740:1998Published

Lead sulfide concentrates — Determination of silver and gold contents — Fire assay and flame atomic absorption spectrometric method using scorification or cupellation

Concentrés sulfurés de plomb — Dosage de l'argent et de l'or — Méthode par voie sèche et spectrométrie d'absorption atomique dans la flamme à partir d'une scorification ou d'une coupellation

Abstract / scope

This International Standard specifies a fire assay and flame atomic absorption spectrometric procedure for the determination of silver and gold contents of lead sulfide concentrates.

The method is applicable to the determination of silver and gold in lead sulfide concentrates containing 10 % (m/m) to 80 % (m/m) lead.

The method is applicable to silver contents from 200 g/t to 2 000 g/t and gold contents from 0,1 g/t to 25 g/t.