杨生鸿,张明,辛连君.电感耦合等离子体质谱(ICP-MS)法测定碳质板岩样品中铂族元素[J].中国无机分析化学,2019,9(2):42-45.
电感耦合等离子体质谱(ICP-MS)法测定碳质板岩样品中铂族元素
Determination of platinum group elements in graphite samples
投稿时间:2018-11-29  修订日期:2019-02-21
DOI:doi:10.3969/j.issn.2095-1035.2019.02.009
中文关键词:  碳质板岩  硫镍试金 铂族元素  电感耦合等离子体质谱仪
英文关键词:Graphite  rock Sulfur  nickel assay  platinum family  element Inductively  coupled plasma  mass spectrometer
基金项目:
        
作者单位
杨生鸿 青海省水文地质工程地质环境地质调查院
张明 青海省地质矿产测试应用中心
辛连君 青海省水文地质工程地质环境地质调查院
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中文摘要:
      碳质板岩属黑色岩系,与多种金属(包括贵金属)成矿有密切的联系。按照常规的分析方法,硫镍试金溶剂配方都不能对贵金属元素有较好的富集,影响贵金属元素的测定。本文根据石墨岩中样品的成份特征,对测定铂族元素的常规硫镍试金配方进行了改进,增加了硝酸钾和氧化镁,且无需加入锇稀释剂。通过试验选择了合适比例配料,熔融后粉碎镍扣,加入盐酸分解,碲共沉淀剂富集。过滤沉淀用王水溶解。用ICP-MS测定,Lu作内标。对碳质板样品中的铂族元素进行了测定。回收率85%-105%。能够满足碳质板岩中铂族元素的分析测定要求。
英文摘要:
      Graphite rock belongs to the black rock series, and a variety of metals (including precious metals) mineralization has a close contact. According to conventional analysis methods, sulfur, nickel assay solvent formula can have better enrichment of precious metal elements, interfere with the determination of noble metal elements. In this paper, according to the composition characteristics of graphite in the rock samples, the determination of platinum group elements of conventional sulfur nickel as the formula is improved, increased potassium nitrate and magnesium oxide, and don"t need to join the osmium diluent. Through experiment chose the appropriate proportion of ingredients, melting after crushing nickel buckles, to join the hydrochloric acid decomposition, tellurium, precipitant concentration. Filter the precipitate dissolved in aqua regia. Using icp-ms determination, Lu as internal standard. For graphite platinum group elements in rock samples were determined. Recovery is between 85% and 105%. To meet the requirements for measurement of platinum group elements in graphite rock
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