Extraction and Determination Methods for Mobile Forms of Precious Metals in Soil Samples
详细信息
- 责任者：Zhao Wei (Geoanalysis Center of Henan Province ; Zhengzhou 450012 ; China) ; Wang Yulin
- 刊名：Rock and Mineral Analysis
- 出版年：2010
- 卷期：29(3)
- 关键词：贵金属矿 ; precious metals ores ; ICP—MS
- 页码：p.212-216
- 图表：2 illus., 1 table, 25 refs.
- 分类号：0900
- issnNo：ISSN0254-5357
- isbnNo：CN11-2131/TD
摘要
The extraction techniques and determination methods for the mobile forms of platinum,palladium and gold in soil samples are developed. The detection limits for precious metals in soil samples were 0.03 ng/g for Pt, 0.01 ng/g for Pd and Au in mobile forms of water extractable, clay absorbed and exchangeable, organic phase and Fe-Mn oxides bonded metals. The stability of trace platinum,palladium and gold with various mobile forms in a variety of extraction media was tested. And the solid-liquid separation methods, the effect of extraction temperature on the precious metal extraction, as well as the treatment of the extractants were also tested. The method was successfully applied to the identification of buried platinum and palladium deposits in South Africa with satisfactory results and will provide guidance in searching for hidden mineral deposits.