| 钯(Ⅱ)碘络合物在丙醇-硫酸铵双水相萃取体系中的分配行为及在钯测定中的应用 |
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| 引用本文： | 高云涛,王伟.钯(Ⅱ)碘络合物在丙醇-硫酸铵双水相萃取体系中的分配行为及在钯测定中的应用[J].贵金属,2006,27(3):45-49,53. |
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| 作者姓名： | 高云涛 王伟 |
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| 作者单位： | 1. 云南民族大学,化学与生物技术学院,云南,昆明,650031
2. 云南大学,化学与材料科学学院,云南,昆明,650031 |
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| 摘 要： | 研究了Pd(Ⅱ)碘络合物在丙醇-硫酸铵双水相萃取体系中的分配行为,在HCl介质中,碘化铵存在下,Pd(Ⅱ)能形成离子缔合物PdI42-.(PrOH2 )2]从而被萃入丙醇相.获得了最佳萃取条件,结果表明本方法能定量萃取Pd(Ⅱ),在最佳萃取条件下,Pd(Ⅱ)的萃取率可达99.2%.合成样的分离结果表明,本方法可应用于从大量基体金属如Fe2 、Ca2 、Mg2 、Mn2 、Al3 、Pb2 和Zn2 中分离Pd(Ⅱ).对从废碳钯催化剂中Pd的回收也进行了试验,结果与火试金法相符.
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| 关 键 词： | 分析化学 双水相体系 萃取 钯 丙醇 碘化铵 Analytical chemistry Aqueous biphasic system Extraction Pd Propyl-alcohol Ammonium iodide |
| 文章编号： | 1004-0676（2006）03-0045-05 |
| 收稿时间： | 2005-12-22 |
| 修稿时间： | 2005-12-22 |
Distribution Behaviors of Pd(Ⅱ) in PrOH-(NH4)SO4 Aqueous Biphasic System and Its Application in Determination of Pd(Ⅱ) |
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| GAO Yuntao,WANG Wei.Distribution Behaviors of Pd(Ⅱ) in PrOH-(NH4)SO4 Aqueous Biphasic System and Its Application in Determination of Pd(Ⅱ)[J].Precious Metals,2006,27(3):45-49,53. |
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| Authors: | GAO Yuntao WANG Wei |
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| Abstract: | The extraction of iodide complex of Pd(Ⅱ) in the propyl-alcohol ammonium sulfate aqueous biphasic extraction system was investigated. Pd(Ⅱ) is found to be extracted into the propylmedium. And the related extraction conditions were optimized. The experimental results indicated that Pd(Ⅱ) can be quantitatively extracted by proposed method, and an extraction rate of 99.2% for Pd(Ⅱ) can be achieved under optimized conditions. The proposed method was applied to the separation of palladium from large amount of base metals such as Fe2+,Ca2+, Mg2+, Mn2+, Al3+, Pb2+and Zn2+ in synthetic sample. Application of the method for separation of palladium from spent carbon palladium catalysts was also investigated and the results agree well with fire-assay method. |
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| Keywords: | Analytical chemistry Aqueous biphasic system Extraction Pd Propyl-alcohol Ammonium iodide |
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