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黄金科学技术 ›› 2018, Vol. 26 ›› Issue (2): 234-240.doi: 10.11872/j.issn.1005-2518.2018.02.234

• 采选技术与矿山管理 • 上一篇    下一篇

低氧低分压环境下泡塑吸附—石墨炉原子吸收光谱法测定痕量金的最佳条件选择

聂凤莲1,张浥宁2,王立华1   

  1. 1.中国人民武装警察部队黄金第六支队,青海 西宁 810002;
    2.北京工业大学信息学部,北京 100022
  • 收稿日期:2017-05-17 修回日期:2017-12-25 出版日期:2018-04-30 发布日期:2018-05-19
  • 作者简介:聂凤莲(1970-),女,广西苍梧人,高级工程师,从事分析测试及方法研究工作。1065961783@qq.com

Optimum Condition Selection of Determining Trace Gold by Bubble Plastic Adsorption-Graphite Furnace Atomic Absorption Spectrometry Method Un-der the Environment of Low Oxygen and Low Pressure
 

NIE Fenglian 1,ZHANG Yining 2,WANG Lihua 1   

  1. 1.No.6 Gold Geological Party of CAPF,Xining 810002,Qinghai,China;2.Faculty of Information Technology,Beijing University of Technology,Beijing 100022,China
  • Received:2017-05-17 Revised:2017-12-25 Online:2018-04-30 Published:2018-05-19

摘要:

针对高海拔地区低氧低分压环境下水沸点低、金溶出率和解脱率低以及仪器工作环境变化的问题,探讨了泡塑吸附—石墨炉原子吸收光谱法测定痕量金时不同溶样时间、泡塑解脱方式、灯电流、狭缝宽度和升温程序对测定结果的影响,确定了该方法的最佳条件。研究得出:在该条件下得到的方法检出限为0.16 ng/g,经国家一级标准物质验证,该方法的准确度和精密度符合规范要求,解决了低氧低分压环境下痕量金测定的难题。

关键词: 低氧低分压环境, 痕量金测定, 富集分离, 泡塑吸附—石墨炉原子吸收光谱法, 高海拔地区

Abstract:

Aiming at the problems of low boiling point,low dissolution rate and low desorption rate of gold,and change of working environment of instrument under the environment of low oxygen and low pressure at high altitude area,the influence of different dissolving time,bubble plastic desorption mode,lamp electric current,slit width and heating procedure on the determination result were discussed while determining of trace gold by bubble plastic adsorption-graphite furnace atomic absorption spectrometry method,and the best condition of the method is determined.The results showed that the detection limit of the method is 0.16 ng/ng,the accuracy and precision of the method meet the requirements of standards by first grade standard materials,it solves the problem of determination of trace gold under the environment of low oxygen and low pressure.

Key words: low oxygen and low pressure environment, determination of trace gold, concentration and sepa-ration, bubble plastic adsorption-graphite furnace atomic absorption spectrometry method, high altitude area

中图分类号: 

  • O657.31

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