| 溶剂萃取—火焰原子吸收法测定硅粉中微量铬 |
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| 引用本文： | 金浩,徐焕斌.溶剂萃取—火焰原子吸收法测定硅粉中微量铬[J].吉林化工学院学报,1988(2). |
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| 作者姓名： | 金浩 徐焕斌 |
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| 作者单位： | 吉林化工学院化学工程教研室，吉林化工学院化学工程教研室 |
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| 摘 要： | 使用吡咯烷二硫代氨基甲酸铵(APDC)和二乙基二硫代氨基甲酸钠(DDTC)混合溶液为络合剂,以甲基异丁基酮(MIBK)为萃取剂,火焰原子吸收法测定硅粉中微量铬,既消除了共存元素的干扰,同时也提高了方法的灵敏度.该法测定的灵敏度为0.006μg·ml~(-1)/1%,相对误差小于4%,标准偏差小于0.70PPm,变动系数小于8.0%。
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| 关 键 词： | 溶剂萃取 原子吸收 硅粉分析 测定铬 |
Determination of Trace Chromium in Silicon Powder by Solvent Extraction—Flame Atomic Absorption Spectrophotometry |
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| Jin Hao Xu Huanbin.Determination of Trace Chromium in Silicon Powder by Solvent Extraction—Flame Atomic Absorption Spectrophotometry[J].Journal of Jilin Institute of Chemical Technology,1988(2). |
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| Authors: | Jin Hao Xu Huanbin |
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| Affiliation: | Jin Hao Xu Huanbin |
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| Abstract: | This paper uses ammonium pyrrolidine dithiocarbamate(APDC) andsodium diethyl dithiocarbamate (DDTC) complexant solution ascomplex solution,methyl isobutyl ketne (MIBK)as extracting solution,to determine trace chromium by flame atomic absorption spectrophot-ometry,thus eliminating interference of the coexistence elements aswell as strengthening the sensitivity of the method.The sensitivitydetermined by the method is 0.006μg.ml~(-1)/1%,the relative deviationis less than 4%,the standard deviation is less than 0.70ppm,and therelative standard deviation is less than 8.0%. |
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| Keywords: | solvent extraction atomic absorption analysis of silicon powder determination of chromium |
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