电感耦合等离子体质谱法测定硫化物单矿物中痕量稀土元素  

Determination of Trace REEs in Sulfide Single Mineral by Inductively Coupled Plasma Mass Spectrometry

作　　者：刘宏[1] 张坤鹏[1] 冯芳兵 唐元斌 徐进勇[1] 石雅静 Liu Hong;Zhang Kunpeng;Fen Fangbing;Tang Yuanbing;Xu Jinyong;Shi Yajing(College of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]成都理工大学地球科学学院,四川成都610059

出　　处：《中国稀土学报》2018年第6期755-759,共5页Journal of the Chinese Society of Rare Earths

摘　　要：硫化物单矿物基体复杂,在利用电感耦合等离子体质谱仪测定其中稀土元素时,基体效应干扰严重,为准确测定其中的稀土元素,必须对样品进行分离富集。采用硝酸-氢氟酸体系溶解样品,通过Fe(OH)_3共沉淀和阴离子交换树脂(AG1-X8)去除基体元素,利用电感耦合等离子体质谱法测定稀土元素。通过测定两种国家标准物质硫化物单矿物(GBW 07267,GBW07268,GBW07270)中稀土元素来验证该方法,方法检出限为0. 003(Tm)～0. 138(Ce) ng·g^(-1),加标回收率在91%～113%之间。The matrix of sulfide single mineral is complex.When REEs in side the mineral was determined by in-ductively coupled plasma mass spectrometry,the matrix effect is serious.In order to accurately measure the REEs,the samples must be separated and enriched.The sample was dissolved by nitric acid-hydrofluoric acid.The matrix elements were removed by iron hydroxide coprecipitation and anion exchange resin (AG^■1-X8),and the enriched rare earth elements were determined by inductively coupled plasma mass spectrometry.The method was validated by measuring REEs in two kinds of sulfide single mineral of national standard materials (GBW 07267,GBW07270).The detection limit was from 0.003(Tm)to 0.138(Ce)ng·g^-1,and the recovery was 91%~113%.

关 键 词：硫化物单矿物 稀土元素 ICP-MS 阴离子树脂 

分 类 号：A150.25[哲学宗教—马克思主义哲学]