Quantitative determination of gold and the platinum-group elements in geological samples using improved NiS fire-assay and tellurium coprecipitation with inductively coupled plasma mass spectrometry (ICP-MS)

被引：70
|
作者：
Oguri, K
Shimoda, G
Tatsumi, Y [1 ]
机构：
[1] Kyoto Univ, Inst Geothermal Sci, Beppu, Oita 8740903, Japan
[2] Kyoto Univ, Grad Sch Human & Environm Sci, Kyoto 6068501, Japan
[3] Kyoto Fiss Track, Kyoto 6038832, Japan
来源：
CHEMICAL GEOLOGY | 1999年 / 157卷 / 3-4期
基金：
日本科学技术振兴机构;
关键词：
noble metals; fire-assay; Te coprecipitation; ICP-MS; basalts;
D O I：
10.1016/S0009-2541(98)00205-8
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
New fire-assay and tellurium coprecipitation methods were developed for precise determination of Ru, Rh, Pd, Ir, Pt, and Au in geological samples by using ICP-MS. High recovery (> 97%) of those elements was obtained by technical improvements including (1) duplicate sample fusion under reduced conditions, and (2) duplicate Te-coprecipitation at an adequate temperature (210 degrees C) and for adequate duration (75 min). Total blanks were less than 1 ng except for Ru and Au, and detection limits were within 2-53 ppt on the rock sample base for all elements. The present procedures are relatively simple and can be applied with high precision and reproducibility to the analysis of geological samples with wide ranges of concentrations. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：189 / 197
页数：9
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