| 用原子吸收光谱对痕量铬作价态分析 |
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| 引用本文： | 何金兰.用原子吸收光谱对痕量铬作价态分析[J].分析化学,1995,23(9):1047-1050. |
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| 作者姓名： | 何金兰 |
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| 作者单位： | 湛江师范学院化学系!湛江524048 |
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| 摘 要： | 本文详细研究了鱼腥藻对Ｃｒ＾３＋和Ｃｒ＾６＋离子的选择吸附条件，发现Ｃｒ＾３＋的最佳吸附ＰＨ值为４－５；Ｃｒ＾６＋的最佳ＰＨ为７左右，一定量柠檬酸能抑制Ｃｕ＾２＋，Ｐｂ＾２＋及Ｃｄ＾２＋对Ｃｒ＾６＋的吸附干扰。建立了痕量铬的不同价态原子吸收分析方法；对金属离子与藻之间的吸附机理作了初步探讨。
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| 关 键 词： | 藻类 铬 价态分析 原子吸收光谱 |
An Analytical Method for the Trace Chromium of the Different Valence States by Flame Atomic Absorption Spectrometry |
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| He Jinlan.An Analytical Method for the Trace Chromium of the Different Valence States by Flame Atomic Absorption Spectrometry[J].Chinese Journal of Analytical Chemistry,1995,23(9):1047-1050. |
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| Authors: | He Jinlan |
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| Abstract: | This study examines the optimum condition for the enrichment and the separation of Cr3- and Cr5- using the bioaccumulation of an alga(Anabaena-1058). It is found that the optimum ranges for Cr3- and Cr6- uptake are pH 4-5 and pH 7 or so, respectively, and the interference of Cu2+ , Pb2- and Cd2- with Cr6- can be inhibited by the presence of citric acid. An analytical method for the trace chromium of the different valence states by flame atomic absorption is presented. The interaction mechanism of metal-alga is investigated. |
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| Keywords: | Alga atomic absorption spectrometry chromium valence state analysis |
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