Determination of gold, platinum and palladium in geological samples by inductively coupled plasma mass spectrometry after concentration with 717 anion exchange resin
Abstract：The adsorption property and separation conditions of 717 anion exchange resin to trace gold, platinum and palladium in geological samples were studied. The sample was dissolved with HCl + aqua regia under heating in water bath. Only Mo in dissolved elements had interference with the determination of Pd, which could be eliminated using mathematical formula correction. When the flow rate of eluent was 2 mL/min, the enrichment effects of gold, platinum and palladium in 5% HCl medium reached its best, and the recoveries were close to 100%. After correcting the influence of coexisting ions, the national first-class certified reference materials were determined by inductively coupled plasma mass spectrometry, and the difference between determination results and certified values was satisfactory. The detection limit of method were 0.6 ng/mL, 0.5 ng/mL and 0.7 ng/mL for Pd, Pt and Au, respectively. Five random geological samples were analyzed by this method in comparison with NiS fire assay-ICP-MS method. The determination results were consistent. The results of two methods were checked by double samples variance F test, and there was no significant difference.
李丹;王锝;李彪. 717阴离子交换树脂富集-电感耦合等离子体质谱法测定地质样品中痕量金铂钯[J]. 冶金分析, 2011, 31(4): 14-19.
LI Dan;WANG De;LI Biao. Determination of gold, platinum and palladium in geological samples by inductively coupled plasma mass spectrometry after concentration with 717 anion exchange resin. , 2011, 31(4): 14-19.
