Determination of Au, Pb, Ni and Co in mineral raw materials by atomic absorption spectroscopy with graphite furnace

摘要

A method for quantitative determination of gold, lead, nickel, cobalt in a range of concentrations from mg/g to ng/g was proposed. Method consists of annealing, treatment with acids followed by extraction. Determination of nickel, cobalt and lead was carried out after the decomposition of the sample, without discharge of the sample matrix. Method was tested by certified reference material and various rock samples. Method can be applied for determination of corresponding metals in ores, rocks and waste mining industry.