| 乙醇-硫酸铵双水相萃取镉-碘化钾-罗丹明B离子缔合物 |
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| 引用本文： | 曾云,覃事栋,姚康康,王影,肖苗.乙醇-硫酸铵双水相萃取镉-碘化钾-罗丹明B离子缔合物[J].分析试验室,2012(4):83-85. |
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| 作者姓名： | 曾云 覃事栋 姚康康 王影 肖苗 |
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| 作者单位： | 吉首大学化学化工学院 |
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| 摘 要： | 研究了在(NH4)2SO4存在下,碘化钾-罗丹明B-乙醇体系萃取Cd(Ⅱ)的行为及最佳分相条件。实验表明,在pH 1～3时,乙醇-(NH4)2SO4双水相体系对CdI4]2-络阴离子的萃取率只有35.5%;加入罗丹明B后,该体系能完全萃取镉-碘化钾-罗丹明B形成的离子缔合物,而干扰离子Zn2+、Fe3+、Co2+、Cu2+、Ni2+不被萃取,实现Cd2+与上述离子的分离。
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| 关 键 词： | 双水相 萃取 光度法 镉 离子缔合物 |
Extraction of cadmium-potassium iodide-rhodamine B ion association complex by alcohol-ammonium sulfate aqueous two-phase |
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| ZENG Yun,QIN Shi-dong,YAO Kang-kang,WANG Ying and XIAO Miao.Extraction of cadmium-potassium iodide-rhodamine B ion association complex by alcohol-ammonium sulfate aqueous two-phase[J].Chinese Journal of Analysis Laboratory,2012(4):83-85. |
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| Authors: | ZENG Yun QIN Shi-dong YAO Kang-kang WANG Ying and XIAO Miao |
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| Institution: | (College of Chemistry and Chemical Engineering,Jishou 416000) |
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| Abstract: | In the presence of ammonium sulphate,the extraction behavior of Cd(II) based on potassium iodide-Rhodamine B-alcohol system was studied and the optimal condition of phase separation was selected.Results showed that in the pH1~3 media,the extraction rate of 2– by alcohol-ammonium sulfate aqueous two-phase system is only 35.5%,and the ion association complex,which is formed by adding rhodamine B,can be extracted completely by the aqueous two-phase system.In the system,Cd2+ can be dissociated completely from Zn2+,Fe3+,Co2+,Cu2+ and Ni2+. |
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| Keywords: | Aqueous two-phase Extraction Spectrophotometry Cadmium Ion-association complex |
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