密封溶样泡沫塑料吸附原子吸收测定矿石中的金  

Determination of Gold in Ores by AAS after Enrichment with Sealed Sample Dissolving Foam

作　　者：张秋荣 张秋梅 ZHANG Qiu-rong;ZHANG Qiu-mei(Shanjin Gold Design Consulting Co.,Ltd,Yantai 264000,China)

机构地区：[1]山金设计咨询有限公司,山东烟台264000

出　　处：《世界有色金属》2025年第1期202-204,共3页World Nonferrous Metals

摘　　要：本文提出一种用泡沫塑料吸附原子吸收法测定矿石中痕量金的新方法。采用了高压封闭溶样体系,泡沫塑料吸附富集,TAS-990型火焰原子吸收测定金,研究了不同矿石的焙烧条件、泡沫塑料大小、吸附酸度、吸附时间、振荡时溶液体积、振荡时间硫脲解脱液浓度及王水浓度对金吸附和测定灵敏度的影响。准确度和精密度均达到新规范的要求。In this paper,a new method for the determination of trace gold in ores by AAS with foam adsorption is proposed.The high pressure closed sample dissolving system was used,and the foam plastics were used for adsorption and enrichment.Gold was determined by TAS-990 flame atomic absorption spectrometry.The effects of different ore roasting conditions,foam plastics size,adsorption acidity,adsorption time,solution volume during oscillation,concentration of thiourea solution during oscillation time and aqua regia concentration on gold adsorption and determination sensitivity were studied.Both accuracy and precision meet the requirements of the new standards.

关 键 词：金 原子吸收 硫脲解脱 泡沫塑料 高压密封溶样 

分 类 号：P575[天文地球—矿物学]