Analysis of pretreatment methods for determination of germanium in coal by hydride generation-atomic fluorescence spectrometry
To enhance the efficiency of germanium detection in coal and reduce the usage of organic extractants,this paper examines the method of determining trace germanium content in coal using HG-AFS.Through a thorough investigation of the working conditions of the atomic fluorescence spectrometer,conditions for hydride generation,and sample treatment,a preliminary method for determining germanium content in coal via hydride generation-atomic fluorescence spectrometry has been established.The results demonstrate a limit of detection of 0.18μg/L,a relative standard deviation(RSD)ranging from 1.97%to 5.27%,and a recovery rate of standard addition between 97%and 105%.This indicates that hydride generation-atomic fluorescence spectrometry is well-suited for determining germanium content in coal,exhibiting high accuracy and stability.The findings of this study serve as a scientific basis for the revision of the national standard for the determination of germanium content in coal.
germaniumatomic fluorescence spectrometryinstrument working conditionspretreatment method
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