| 交联壳聚糖在硒的形态分析中的应用研究 |
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| 引用本文： | 姜建生,黄淦泉,钱沙华,汪玉庭,王梅林.交联壳聚糖在硒的形态分析中的应用研究[J].光谱学与光谱分析,1999,19(1):75-77. |
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| 作者姓名： | 姜建生 黄淦泉 钱沙华 汪玉庭 王梅林 |
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| 作者单位： | 武汉大学环境科学系,430072,武汉 |
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| 摘 要： | 本文研究了交联壳聚糖对Ｓｅ（Ⅳ）和Ｓｅ（Ⅵ）的吸附行为，并吸附机理进行了探讨。结果表明：在ＰＨ＝４时，Ｓｅ（Ⅳ）捐附率达９５％，而对Ｓｅ（Ⅳ）几乎无吸附；吸附Ｓｅ（Ⅵ）后，用１ｍｏｌ／Ｌ盐酸定量解吸，建立了氢化物发生原子吸收测定环境中痕量Ｓｅ（Ⅳ）／Ｓｅ（Ⅵ）和有机硒的方法。本法的检出限为２０ｎｇ／Ｌ，回收率为９３－１０６％，变异系数为２．０－５．０％
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| 关 键 词： | 硒 形态 氢化物发生-原子吸收光谱法 交联壳聚糖 |
Study on Application of Crosslinked Chitosan to the Speciation Analysis of Selenium |
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| Jiansheng JIANG,Ganquan HUANG,Shahua QIAN,Yuting WANG,Meilin WANG.Study on Application of Crosslinked Chitosan to the Speciation Analysis of Selenium[J].Spectroscopy and Spectral Analysis,1999,19(1):75-77. |
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| Authors: | Jiansheng JIANG Ganquan HUANG Shahua QIAN Yuting WANG Meilin WANG |
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| Institution: | Department of Environmental Sciences, Wuhan University, 430072 Wuhan. |
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| Abstract: | The adsorption of Se(IV)/Se(VI) by crosslinked chitosan was studied and the adsorption mechanism was concerned. The results indicated that the adsorption of Se(VI) was 95% at pH=4, while almost no adsorption for Se(IV). The adsorbed Se(VI) was quantitatively desorbed with 1 mol/L HCl after adsorption of Se(VI). A new method for the determination of trace Se(IV)/Se(VI) and organic selenium in environmental samples with hydride generation and atomic absorption spectphotometry has been developed. The detection limit of this method was 20 ng/L, the recovery was 93%-106% and the coefficient of variation was 2.0%-5.0%. |
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| Keywords: | Selenium Speciation Hydride generation atomic absorption spectrophotometry Crosslinked chitosan |
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