电感耦合等离子体质谱(ICP-MS)法测定地球化学样品中金时样品前处理条件的优化

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英文篇名：Optimization of Pretreatment Conditions for Determination of Gold in Geochemical Samples by ICP-MS 作者：于立华 英文作者：YU Lihua;Fourth Institute of Geological and Mineral Exploration,Gansu Geological and Mineral Bureau,Laboratory of Jiuquan; 关键词：地球化学样品 ; 金 ; 泡塑富集 ; 质谱 ; 前处理条件优化 英文关键词：geochemical samples;;gold;;foam enrichment;;mass spectrometry;;optimization of pretreatment conditions 中文刊名：WJFX 英文刊名：Chinese Journal of Inorganic Analytical Chemistry 机构：甘肃省地矿局第四地质矿产勘查院实验室; 出版日期：2019-04-15 出版单位：中国无机分析化学 年：2019 期：v.9 基金：甘肃省玉门市前红泉-黑山北滩地区1∶50000矿调项目(2200113);; 红柳疙瘩井-总口子地区1∶50000矿调项目(2200113) 语种：中文; 页：WJFX201902010 页数：4 CN：02 ISSN：11-6005/O6 分类号：50-53

摘要

依据地球化学样品分析方法第4部分:金量的测定泡塑富集-电感耦合等离子体质谱法。在大量实践的基础上总结了样品前处理过程中样品的焙烧、溶样、振荡吸附、解脱时间的合理控制,以及样品分析前处理过程中的一些操作注意事项。最终确定样品焙烧时间1h,溶样时间40min,震荡吸附时间30min,硫脲水浴解脱时间30min。经过对大批量实验样品及国家一级金标准物质测定验证后得出:适当优化条件可以满足绝大多数样品的分析准确度、精密度等质控分析要求,并且可以提高分析效率。尤其对于大批量分析任务,如区域化学地质普查。可以在相同的实验设备、人员配备的基础上,提高分析效率,降低能耗。
        This article is based on geochemical sample analysis method part 4:determination of gold content foam plastic enrichment-inductively coupled plasma mass spectrometry.On the basis of a large number of practices,this paper summarizes the roasting,dissolution,oscillating adsorption,reasonable control of release time,as well as some operational precautions in the process of sample preparation.The optimization condition is that the sample is roasted for 1 h,dissolution time 40 min,shock adsorption time 30 min,thiourea water bath release time 30 min.After testing and verifying the large number of experimental samples and the national gold standard materials,it is concluded that the appropriate optimization conditions can meet the analysis accuracy,precision and other quality control analysis requirements of most samples,and can improve the analysis efficiency.Especially for mass analysis tasks such as regional chemical geological surveys.It can improve the analysis efficiency and reduce energy consumption on the basis of the same experimental equipment and staffing.

引文

[1]中华人民共和国土资源部.地球化学样品分析方法第4部分:金量的测定泡塑富集-电感耦合等离子体质谱法:DZ/T0279.4-2016[S].北京:中国标准出版社,2016.
    [2]杜春蕾.泡塑吸附原子吸收测定金方法改进研究[O/L].https://www.xzbu.com/1/view-11254715.htm.[2018-11-03].
    [3]中华人民共和国地质矿产部.地球化学普查规范(比例尺1∶50000)样品分析技术要求补充规定:DZ/T0011-1991[S].北京:中国标准出版社,1991.