改性三聚氰胺泡塑富集-电感耦合等离子体质谱(ICP-MS)法测定矿样中的钯  

Determination of Palladium in Mineral Samples by Inductively Coupled Plasma Mass Spectrometry with Modified Melamine Foam Enrichment

作　　者：周彧琛 曲少鹏 吴俊 贾正勋 马景治 ZHOU Yuchen;QU Shaopeng;WU Jun;JIA Zhengxun;MA Jingzhi(Key Laboratory of Rare Earth and Rare Scattered Minerals,Ministry of Natural Resources,Geological Experimental Testing Center of Hubei Province,Wuhan,Hubei 430034,China)

机构地区：[1]湖北省地质实验测试中心,自然资源部稀土稀有稀散矿产重点实验室,武汉430034

出　　处：《中国无机分析化学》2023年第7期735-740,共6页Chinese Journal of Inorganic Analytical Chemistry

基　　金：湖北省地质局科技专项项目(KJ2021-1T,KJ2022-35)。

摘　　要：钯的富集常用泡塑作为载体,而通常对泡塑的处理过程需要使用带有胺基的有机试剂,以确保泡塑的官能团带有正电荷,用于富集带有负电荷的钯络阴离子。将样品用HCl-H 2 O 2体系进行消解,避免NO 3-的引入。将消解好的样品溶液用10%(V/V)盐酸处理过的三聚氰胺富集,在盐酸浓度低于10%(V/V),振荡时间为80 min时,选择高温灰化法,Pd的加标回收率可达到95%以上,相对标准偏差(RSD)为3.7%~6.8%。以铂族元素国家一级标准物质进行验证,测定值与认定值基本一致。泡塑富集处理过程简单易实现,且对环境友好,可以满足大部分矿样中Pd的分析检测。Foam plastics are often used as a carriers for palladium enrichment,and organic reagents with amine groups are usually used in the treatment of foam plastics to ensure that the functional groups of foam plastics are positively charged for the enrichment of palladium complex anions with negative charges.The samples were digested with HCl-H 2 O 2 system to avoid the introduction of NO 3-.The digested sample solution was enriched with melamine treated with 10%(V/V)hydrochloric acid.When the concentration of hydrochloric acid was lower than 10%(V/V)and the shaking time was 80 min,the high-temperature ashing method was selected,and the recovery rate of Pd was over 95%,and the relative standard deviation(RSD)was 3.7%—6.8%.It was verified by the first-class national reference materials of platinum group elements,and the measured values were basically consistent with the recognized values.The foam treatment process is simple and easy to realize,and it is environment-friendly,which can meet the analysis and detection of Pd in most mineral samples.

关 键 词：三聚氰胺泡塑 分离富集 钯 ICP-MS 矿石 

分 类 号：O657.63[理学—分析化学] TH843[理学—化学]