| 全热解石墨管石墨炉原子吸收法测定痕量锶 |
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| 引用本文： | 郑衍生,周采菊.全热解石墨管石墨炉原子吸收法测定痕量锶[J].岩矿测试,1992,11(3):236-239. |
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| 作者姓名： | 郑衍生 周采菊 |
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| 作者单位： | 吉林大学化学系，吉林大学化学系 长春 130023，长春 130023 |
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| 摘 要： | 研究了热解涂层和全热解石墨管中Sr的原子吸收信号形状和原子化行为,讨论了CaCl_2、FeCl_3和HClO_4,抑制Sr吸收信号的原因。采用EDTA铵盐作基体改进剂,全热解石墨管石墨炉原子吸收法直接测定河泥中痕量Sr,方法的特征量为6.9pg/0.0044A。
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| 关 键 词： | 锶 全热解石墨管 石墨炉原子吸收 痕量 测定 |
Determination of Trace Strontium by Graphite Furnace Atomic Absorption Spectrometry with All-Pyrolytic Graphite Tube |
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| Zheng Yansheng and Zhou Caiju.Determination of Trace Strontium by Graphite Furnace Atomic Absorption Spectrometry with All-Pyrolytic Graphite Tube[J].Rock and Mineral Analysis,1992,11(3):236-239. |
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| Authors: | Zheng Yansheng and Zhou Caiju |
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| Abstract: | The shape of absorption signal and atomization behavior of strontium inpyrolyticlly coated and all-pyrolytic graphite tubes were studied. The reason why CaCl2, FeCl3 and HC1O4 suppress the absorption signal was discussed. A method for direct determination of trace strontium, in sediments by graphite furnace atomic absorption spectrometry with all-pyrolytic graphite tube was proposed, which uses ammonium salt of EDTA as matrix modifier. The sensitivity of the method is 6.9 pg/0.0044A. |
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| Keywords: | strontium all-pyrolytic graphite tube graphite furnace atomic absorption spectrometry matrix modifier |
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