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Gold Science and Technology ›› 2018, Vol. 26 ›› Issue (2): 234-240.doi: 10.11872/j.issn.1005-2518.2018.02.234

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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

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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

CLC Number: 

  • O657.31

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