地球化学勘探样品中超痕量锇、钌分析方法研究  

Determination of Ultra-trace Ruthenium and Osmium in Geochemical Exploration Samples

作　　者：王琳[1] 来新泽[2] 吴建政[2] 王烨[1] 孙红林[2] 

机构地区：[1]河南省地质调查院,河南郑州450007 [2]河南省岩石矿物测试中心,河南郑州450012

出　　处：《贵金属》2004年第3期49-53,共5页Precious Metals

基　　金：国土资源部地质大调查项目(DK0003047)

摘　　要：介绍了地球化学勘探样品中超痕量锇、钌的分析方法。作者研制出新型的锇、钌稀释剂,有效降低全流程空白值。样品经过氧化钠分解,酸化后蒸馏,使锇、钌从混合物中分离出来,同时彼此完全分离。采用Ce(Ⅳ)-As(Ⅲ)体系催化光度法测定锇、钌。其检出限均达到0.02ng/g。本方法采用一般实验设备,满足120万化探对铂族元素分析技术的要求。A method for the determination of ultra-trace ruthenium and osmiun in geochemical exploration samples is described in the paper. A new type of ruthenium and osmiun diluting agent was developed, it effectively reduced the whole procedure analysis blank. The sample was decomposed with sodium peroxide fusion method. Distillation method was used for separation of ruthenium and osmium from matrix and each other. The ruthenium and osmium were determined by catalysis photometric method with As (III)-Ce (IV) system with detection limits of 0.02?0-9 for two elements. The method adopted the common equipment of laboratory and satisfied the demands of analysis of platinum group elements in 1:200000 geochemical exploration samples.

关 键 词：地球化学勘探样品 锇 钌 稀释剂 催化光度法 检出限 分析化学 

分 类 号：P632[天文地球—地质矿产勘探]