Abstract：After the samples were dissolved in aqua regia/HBr and tartaric acid was added to mask antimony, then mercury in antimony ingot and antimony oxide was extracted into the organic phase with methyl isobutyl ketone (MIBK) and determined by organic phase injection-intermittent flow injection atomic fluorescence spectrometry. Sample dissolution methods and interferences caused by coexisting ions were investigated, and instrument working conditions, extraction conditions, acidity and other factors were optimized. The results showed that under optimal conditions, the mercury content within the range of 0.02 to 50 μg/L was in good linear relationship, and the detection limit was 0.013 μg/L. This method was applied to the actual antimony ingot and antimony oxide sample analysis. It was found that the results were consistent with those obtained by inductive coupled plasma atomic emission spectrometry with relative standard deviations (RSDs, n=6) of 0.65%-2.4% and recoveries of 94 %-99%.
陆建平，谭芳维，石建荣 . 甲基异丁基甲酮萃取—氢化物发生原子荧光光谱法测定锑锭和氧化锑中汞[J]. 冶金分析, 2012, 32(9): 43-46.
LU Jian-ping, TAN Fang-wei, SHI Jian-rong. Determination of mercury in antimony ingot and antimony oxide by methyl isobutyl ketone extraction-hydride generation atomic fluorescence spectrometry. , 2012, 32(9): 43-46.
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