大洋多金属结核和深海沉积物标准物质中铂族元素的中子活化分析  

Determination of Platinum Group Elements in Polymetallic Nodules and Deep Marine Sediments Reference Materials by Neutron Activation Analysis

作　　者：李晓林[1,2] 童纯菡[1,2] 朱节清[1,2] 

机构地区：[1]中国科学院上海原子核研究所核分析技术开放研究室 [2]成都理工学院核技术应用研究所

出　　处：《岩矿测试》1998年第3期167-171,共5页Rock and Mineral Analysis

基　　金：中国大洋矿产资源研究与开发协会八五综合研究课题

摘　　要：采用镍锍试金预富集中子活化分析方法，测定了大洋多金属结核标准物质ＧＳＰＮ２、ＧＳＰＮ３和深海沉积物标准物质ＧＳＭＳ２、ＧＳＭＳ３中的铂族元素；根据大洋样品成分特征，对常规的镍锍试金配方和熔炼条件作了改善；计算了活化分析中的铂族元素干扰核反应，校正了Ａｕ对Ｐｔ的二级干扰；选用羰基化镍粉配料，降低了铂族元素空白值。用国家一级标准物质ＧＢＷ０７１０２作了对照分析，结果与标准值相符。A method for determination of platium group elements (PGE) in geostandard reference materials of polymetallic nodules (GSPN 2 and GSPN 3) and deep marine sedments (GSMS 2 and GSMS 3) by neutron activation analysis after nickel sulfide fire assay preconcentration was developed. According to the characteristics of marine sample components, the reagents and melting conditions used in common nickel sulfide fire assay preconcnetration were modified. Interference from nuclear reactions on PGE analysis were studied. The background of the procedure for PGE was improved remarkably by using hydroxylated nickel powder as a collector. The method has been verified by determination of PGE in national standard ultra basic rock (GBW 07102). The results are in good agreement with certified values.

关 键 词：铂族元素 中子活化分析 多金属结构 深海 沉积物 

分 类 号：P736.43[天文地球—海洋地质] P744.3[天文地球—海洋科学]