Abstract:

Because of low gold content in ore, the methods of p retreatment, samp le dissolution, separation, enrichment and determination should be adop ted according to the characters of the ore samp les to find the gold out. Aiming t analyzing the gold in the ores of Hunan XinlongMining Co. , L td. in Dongan, we choose the oil of vitriol, concentrated nitric acid, and potassium chlorate to p retreat the samp les, then add aqua regia to decompose them, finally,use thiomichlers ketone spectrophotometry to determinate gold. We can find that the method introduces in this paper is
superior to the others by comparison.

Key words: Gold, Carbon-containing ore, Analysis and determination, Hunan