湿法分解—等离子体质谱测定区域地球化学调查样品中金、铂、钯

来源期刊：黄金2011年第8期

论文作者：闫红岭 李振 刘军 高志军

文章页码：61 - 64

关键词：区域化探； 湿法分解； 电感耦合等离子体质谱法； 金； 铂； 钯。

Key words：regional geochemical prospecting； wet method dissolution； inductively coupled plasma mass spectrography； gold； platinum； palladium

摘    要：采用湿法分解制成10%盐酸试液,用活性炭-树脂复合富集材料吸附、灰化、溶解后,用Rh作内标,等离子体质谱仪测定区域地球化学调查样品中金、铂、钯。研究了富集材料、吸附方式等对金、铂、钯的吸附影响。该方法操作简便、分析速度快,有效降低了测试过程的空白值,用ICP-MS测定时不需要扣除干扰,检出限分别为Pt 0.057 ng/g、Pd 0.067 ng/g、Au 0.10 ng/g,其各项指标满足DZ/T 0130—2006地质实验室测试质量管理规范要求。

Abstract: Regional geochemical prospecting samples was dissolved with wet method to prepare 10 % hydrochloric solution.After adsorption,ashing and dissolution with compound enrichment materials,gold,platinum and palladium in the samples are determined with plasma mass spectrography,adopting Rh as internal reference.The influences of enrichment materials and adsorption mode on the adsorption results are investigated.The method is simple,fast and can reduce the blank values in the testing process.There is no need to deduct interference in the ICP-MS determination.The determination limits are respectively Pt 0.057 ng/g,Pd 0.067 ng/g and Au 0.10 ng/g.These indices meet <GEOLAB Test Quality Control Standard> (DZ/T 0130-2006).