| 黑色岩型铂族矿物中铂钯金相态ICP-MS分析方法研究 |
| |
| 引用本文： | 连文莉,来新泽,刘军,张金矿,于亚辉,王明军,孙勇,王琳.黑色岩型铂族矿物中铂钯金相态ICP-MS分析方法研究[J].岩矿测试,2017,36(2):107-116. |
| |
| 作者姓名： | 连文莉 来新泽 刘军 张金矿 于亚辉 王明军 孙勇 王琳 |
| |
| 作者单位： | 贵州大学资源与环境工程学院, 贵州 贵阳 550025;中国石油勘探开发研究院油气地球化学重点实验室, 北京 100083,中国石油勘探开发研究院油气地球化学重点实验室, 北京 100083,贵州大学资源与环境工程学院, 贵州 贵阳 550025,中国石油勘探开发研究院油气地球化学重点实验室, 北京 100083;北京大学地球与空间科学学院造山带与地壳演化教育部重点实验室, 北京 100871,中国石油勘探开发研究院油气地球化学重点实验室, 北京 100083,中国石油勘探开发研究院油气地球化学重点实验室, 北京 100083,贵州大学资源与环境工程学院, 贵州 贵阳 550025,贵州大学资源与环境工程学院, 贵州 贵阳 550025,贵州大学资源与环境工程学院, 贵州 贵阳 550025,贵州大学资源与环境工程学院, 贵州 贵阳 550025 |
| |
| 基金项目： | 国家自然科学基金资助项目（41530317，41472089）；中国石油天然气股份有限公司重点资助项目（2016A-0204，2016A-0205）；贵州省地勘基金项目（2016-09-1） |
| |
| 摘 要： | 黑色岩是近年发现的铂族元素重要载体,由于其金属来源的多样性及成矿作用的复杂性,对于铂族元素在该类矿物中的分布及富集形式目前并不十分清楚,这也是造成黑色岩中铂族元素测定不稳定的主要原因。本文根据黑色岩的矿物性质及组成,将黑色岩中Pt、Pd、Au的赋存状态划分为:可交换相、有机结合相、硫化物结合相、残渣相。通过应用硫氰酸钾+氰化钠作为解吸剂,有效抑制了黑色岩中有机碳对各相态中Pt、Pd、Au的吸附,采用分离富集ICP-MS法测定了Pt、Pd、Au在各相态中的分布。结果表明:(1)各元素各相态的提取总量与该元素在样品中的总量之比分别为Pt 94.4%~101.0%,Pd 95.8%~101.0%,Au 96.7%~102.0%,说明本方法具有较好的准确性和重现性;(2)黑色岩矿物中Pt、Pd、Au的富集不仅具备亲硫性,而且与有机碳形成的地质条件、地质背景有明显的相关性,此结果为研究黑色岩中铂族元素所处的地球化学环境及其成矿规律提供了重要信息。
|
| 关 键 词： | 激光剥蚀电感耦合等离子体质谱法 多元素成像 早寒武世 磷结核 |
| 收稿时间： | 2017/1/24 0:00:00 |
| 修稿时间： | 2017/3/12 0:00:00 |
Phase Analysis of Pt, Pd and Au in Black Rock-type Platinum Group Element Minerals by ICP-MS |
| |
| LIAN Wen-li,LAI Xin-ze,LIU Jun,ZHANG Jin-kuang,YU Ya-hui,WANG Ming-jun,SUN Yong and WANG Lin.Phase Analysis of Pt, Pd and Au in Black Rock-type Platinum Group Element Minerals by ICP-MS[J].Rock and Mineral Analysis,2017,36(2):107-116. |
| |
| Authors: | LIAN Wen-li LAI Xin-ze LIU Jun ZHANG Jin-kuang YU Ya-hui WANG Ming-jun SUN Yong and WANG Lin |
| |
| Institution: | College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China;Key Laboratory of Petroleum Geochemistry, Research Institute of Petroleum Exploration and Development, Beijing 100083, China,Key Laboratory of Petroleum Geochemistry, Research Institute of Petroleum Exploration and Development, Beijing 100083, China,College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China,Key Laboratory of Petroleum Geochemistry, Research Institute of Petroleum Exploration and Development, Beijing 100083, China;Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871, China,Key Laboratory of Petroleum Geochemistry, Research Institute of Petroleum Exploration and Development, Beijing 100083, China,Key Laboratory of Petroleum Geochemistry, Research Institute of Petroleum Exploration and Development, Beijing 100083, China,College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China,College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China,College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China and College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China |
| |
| Abstract: | The phosphorus-rich sediments, including phosphate nodules and phosphate rock, at the bottom of the Lower Cambrian, were widespread in China. These sediments are also considered as one of the most important chemical symbol layers in early Cambrian and also indicate the great change of the Earth''s surface system in the transitional period of Cryptozoic to Phanerozoic. Phosphorus sources and enrichment mechanism remains a matter of debate. In order to better understand the depositional mechanism of these phosphorus-rich sediments, Laser Ablation-Inductively oupled Plasma-Mass Spectrometry (LA-ICP-MS) was used to do in situ multi-element imaging in the micro areas of phosphate nodule from the black shale of Niutitang Formation in Jinsha area of Guizhou Province. The results showe that the enrichment of each element in phosphorus tuberculosis clearly records the trend of microenvironment during the formation of phosphorus tuberculosis. Ca and P are enriched and Si is depleted in the inner of phosphate nodule, means that the enrichment of P was due to the formation of authigenic apatite. P is derived from organic matter containing oxygen or anaerobic degradation release. The co-enrichment of Mn, Zn with P in the interior indicates an oxic bottom water during the formation of phosphate nodule. The enrichment of As, Mo, V in the surrounding rocks or black shale implies that the reduced bottom water ended the growth of phosphate nodule. This study shows that LA-ICP-MS in situ multi-element imaging technology can obtain rich geochemical information in the micro-area, which can provide high-precision visualization evidence, and will be widely used in geological exploration and paleoenvironment research. |
| |
| Keywords: | Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry multi-elements imaging early Cambrian phosphate nodule |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《岩矿测试》浏览原始摘要信息 |
| 点击此处可从《岩矿测试》下载免费的PDF全文 |
|
