| 钯镁基体改进剂对铅,铋,锗在石墨炉中原子化影响的研究 |
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| 引用本文： | 宣维康. 钯镁基体改进剂对铅,铋,锗在石墨炉中原子化影响的研究[J]. 分析化学, 1992, 20(2): 209-211 |
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| 作者姓名： | 宣维康 |
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| 作者单位： | 上海钢铁研究所 上海 |
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| 摘 要： | 通过原子吸收和X-射线衍射分析证明,加入钯镁基体改进剂在预热处理后对Pb、Bi和Ge三个元素分别生成金属间化合物PbPd_3、BiPd_3、Ge_9Pd_(23)和其他化合物,从而提高了最高允许灰化温度,改变了原子化机理。在原子化阶段这些金属间化合物直接分解为金属原子,结果提高测定灵敏度。
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| 关 键 词： | 铅 铋 锗 石墨炉 AAS 基体改进剂 |
Effect of Matrix Modifier of Palladium and Magnesium on the Atomization of Lead, Bismuth and Germanium in Graphite Furnace Atomic Absorption Spectrometry |
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| Xuan Weikang. Effect of Matrix Modifier of Palladium and Magnesium on the Atomization of Lead, Bismuth and Germanium in Graphite Furnace Atomic Absorption Spectrometry[J]. Chinese Journal of Analytical Chemistry, 1992, 20(2): 209-211 |
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| Authors: | Xuan Weikang |
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| Abstract: | It was proved by AAS and XRD that Pb, Bi and Ge react with Pb-Mg matrix modifier to form PbPd_3, BiPd_3 and Ge_9Pd_(23) at pretreatment heating step, thereby, the maximum permissible ashing temperature increased and the atomization mechanism changed. At atomization step, these intermetallic compounds can decompose directly to metallic atoms which increase the sensitivity of tested elements. |
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| Keywords: | Graphite furnace atomic absorption spectrometry X-ray diffraction analysis Palladium-magnesium matrix modiffier Lead Bismuth Germanium. |
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