Determination of gold, palladium and platinum in copper concentrates by inductively coupled plasma mass spectrometry combined with fire assay preconcentration
Abstract：An inductively coupled plasma mass spectrometry (ICP-MS) method was adopted for the determination of precious metal in copper concentrate in combination with fire assay preconcentration and microwave digestion method. The optimal fire assay conditions were determined: melting time, 15 min, ash blowing temperature, 960 ℃ and ash blowing time, 1 h. In the selection of microwave digestion conditions, 10 mL of aqua regia was found to be the most optimal for dissolving precious metal. The interference of isobaric elements, polyatomic ions, refractory oxide and doubly charged ions were also discussed, and the elimination method was found out. The content of gold, palladium and platinum in a copper concentrate was discussed. The detection limit was 0.04, 0.05, and 0.1 ng/g. The relative standard deviation was 1.2%-4.0%.
赵伟,尤雅婷,徐松,郑建明,李建军. 火试金富集-电感耦合等离子体质谱法测定铜精矿中金钯铂[J]. 冶金分析, 2011, 31(10): 41-45.
ZHAO Wei,YOU Ya-ting, XU Song, ZHENG Jian-ming, LI Jian-jun. Determination of gold, palladium and platinum in copper concentrates by inductively coupled plasma mass spectrometry combined with fire assay preconcentration. , 2011, 31(10): 41-45.
