| 双硫腙螯合形成树脂分离富集地质样品中的微量金,铂,钯及其测定 |
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| 引用本文： | 张凯,鲍长利.双硫腙螯合形成树脂分离富集地质样品中的微量金,铂,钯及其测定[J].分析化学,1997,25(4):404-407. |
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| 作者姓名： | 张凯 鲍长利 |
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| 作者单位： | 长春地质学院化学系!长春130026(张凯，鲍长利，李增文，田莉玉)，吉林市吉化集团公司!吉林132000(董春香) |
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| 摘 要： | 研究了双硫腙螯合形成树脂的合成及其分离富集地质样中Ａｕ，Ｐｔ，Ｐｄ的条件。于ｐＨ１．５的ＨＣｌ介质中，Ａｕ，Ｐｔ，Ｐｄ定量吸附于Ｈ２ＤＺ形成树脂上与大量贱金属分离。用０．６ｍｏｌ／Ｌ的硫脲－０．１ｍｏｌ／ＬＨＣｌ洗脱贵金属，回收率均在９４％－１０６％之间。铁也部分上柱，用磺基水杨酸与酒石酸１：１联合掩蔽除去。
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| 关 键 词： | 双硫脲 螯合形成树脂 地质样 金 铂 钯 |
Separation and Precocentration of Trace Gold, Platinum, Palladium in Geological Samples With Dithizone Chelate Forming Resin and Its Determinaion |
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| Zhang Kai,Bao Changi,Li Zengwen,Tian Liyu,Dong Chunxiang.Separation and Precocentration of Trace Gold, Platinum, Palladium in Geological Samples With Dithizone Chelate Forming Resin and Its Determinaion[J].Chinese Journal of Analytical Chemistry,1997,25(4):404-407. |
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| Authors: | Zhang Kai Bao Changi Li Zengwen Tian Liyu Dong Chunxiang |
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| Institution: | Zhang Kai,Bao Chang1i,Li Zengwen,Tian Liyu,Dong Chunxiang |
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| Abstract: | The conditions for synthesis of dithizone chelate forming resin and for separation and preconcentration of Au, Pt and Pd in geological samples have been investigated in this paper. Experiments show that Au, Pt and Pd in solution are enriched on dithizone chelate forming resin column in pH 1. 5 HCI and are eluted with 0. 6 mol/L sulfourea -0.1 mol/L HCI. The recovery of Au.Pt and Pd is 96%-l04%. Results obtained by the analysis of a standard sample are satisfactory. It is proved that dithizone chelate forming resin without sulfonic group but with -NH as ion exchange group can also be used for separation and pre- concentration of Au, Pt and Pd in geological samples, and can be used repeatedly more than 3 times. |
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| Keywords: | Dithizone chelate forming resin separation preconcentration geological sam- ple gold platinum palladium atomic absorption spectrometry |
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