元素在探针表面上的原子化机理研究

ON STUDIES OF ATOMIZATION MECHANISM OF ELEMENTS ON PROBE SURFACE IN THE GRAPHITE FURNACE

探针原子化法是一种新技术。本文系统地总结了用探针原子化法研究Ａｕ（ⅠＢ），Ｓｒ（ⅡＡ），Ｃｄ（ⅡＢ），Ａｌ（ⅢＡ），Ｌａ，Ｓｍ，Ｅｕ（ⅢＢ），Ｇｅ，Ｓｎ，Ｐｂ（ⅣＡ），Ｓｂ，Ｂｉ（ⅤＡ），Ｖ（ⅤＢ），Ｃｒ，Ｍｏ（ⅥＢ），Ｍｎ（ⅦＢ），Ｆｅ，Ｃｏ，Ｎｉ，Ｐｔ（Ⅷ）等２０个元素的原子化机理。原子化起源于卤化物分解的元素有Ａｎ与Ｐｔ，起源于氧化物分解的元素有Ｃｄ，Ａｌ，Ｌａ，Ｓｍ，Ｅｕ，Ｇｅ，Ｍｎ与Ｆｅ，起源碳化物分解的元素有Ｓｒ，Ｖ，Ｃｒ与Ｍｏ，起源于氧化物被碳还原的元素有Ｐｈ，Ｃｏ与Ｎｉ；其原子化既可起源于卤化物分解又可起源于氧化物分解的元素有Ｓｂ；其原子化既可起源于氧化物分解又可起源于氧化物被碳还原的元素有Ｓｎ与Ｂｉ。对文献与我们实验结果不一致之处作了必要的说明。

The probe atomization is a new technique. In this paper, the investigation resultsof atomization mechanism for 20 elements on probe surface in the graphite furnace were summarized. Among 20 elements studied, elements,of which atomization originates from thermolysis of chlorides and oxides, are An, Pt and Cd, Al, La, Sin, Eu, Ge, Mn and Fe respectively.The atomization of Sr, V, Cr and Mo originates from thermolysis of carbides. The atomizationof Ph, Co and Ni is realized through reduction of oxides by carbon. The atomization of Sboriginates from thermolysis of either chloride or oxides and for Sn and Bi, from thermolysisof either oxides or reduction of oxides by carbon. For differences between our experimentalresults and references, the necessary explanations and discussions were given.