铀矿地质2018，Vol.34Issue(2)：105-111,7.DOI:10.3969/j.issn.1000-0658.2018.02.007
增压-微波消解电感耦合等离子体质谱法测定含难溶矿物岩石样品中的微量元素
Determining Trace Elements in Rock Samples Containing Refractory Minerals by Pressurize-microwave Inductively Coupled Plasma Mass Spectrometry
张彦辉 1张良圣 1常阳 1范增伟 1郭冬发1
作者信息
- 1. 核工业北京地质研究院, 北京 100029
- 折叠
摘要
Abstract
A pressurize-microwave inductively coupled plasma mass spectrometry was established in this study with the purpose of determining trace elements in rock samples containing refractory minerals (niobium and tantalum bearing uranium minerals, zircon). The problem for traditional wet digestion method which cannot dissolve rock samples containing refractory minerals (niobium and tantalum bearing uranium minerals, zircon) completely was solved effectively by this technology. An electrical heating pressurized -microwave device was designed according to the principle of ultra-high pressure simulation - microwave digestion. The technical innovation of the device is that the rock samples containing refractory minerals were digested by microwave-digestion device and solved the problem of switching the sample from the microwave digestion device to pressurized digestion device by pressurized-digestion device in the same digestion jar, which achieve a rapid pressurized-microwave digestion method for rock samples containing refractory minerals without cross contamination and with low cost. The Pressurize-microwave digestion parameters for rock samples containing refractory minerals (niobium and tantalum bearing uranium minerals, zircon) were obtained by this paper and the inductively coupled plasma mass spectrometry (ICP-MS) was used to determine trace elements for rock samples containing refractory minerals, which satisfy the requirement of fast and accurate testing for uranium geological exploration. The method has been verified by certified reference materials analysis and the quantitative limits is of 0.004 — 0.084 μg/g, precision is of less than 5%, measuring relative error is less than 10%, which satisfy the requirement of quality control for analytical testing business.关键词
增压-微波消解/电感耦合等离子体质谱法/含难溶矿物岩石样品Key words
pressurized-microwave digestion method/inductively coupled plasma mass spectrometry/rock samples containing refractory minerals分类
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张彦辉,张良圣,常阳,范增伟,郭冬发..增压-微波消解电感耦合等离子体质谱法测定含难溶矿物岩石样品中的微量元素[J].铀矿地质,2018,34(2):105-111,7.
