| 示波滴定法连续测定锌合金中铝和铜 |
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| 引用本文： | 王伟,陆为林.示波滴定法连续测定锌合金中铝和铜[J].冶金分析,2002,22(2):1-1. |
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| 作者姓名： | 王伟 陆为林 |
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| 作者单位： | 盐城工学院化工系,盐城工学院化工系 江苏盐城224003,江苏盐城224003 |
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| 摘 要： | 用示波滴定法连续测定锌合金中的铝、铜含量。试样经酸溶后 ,在 pH5.5的HAc NH4 Ac缓冲介质中 ,用Zn标准溶液连续示波滴定 ,NH4 F和硫脲分别置换A1 EDTA和Cu EDTA中的EDTA ,间接计算出Al和Cu的含量。该方法快速简便 ,终点直观 ,准确度、精密度均较高。标准加入回收率在 99.5 %～ 10 0.5 %之间。RSD <0.5 %。
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| 关 键 词： | 示波滴定 锌合金 铝 铜 |
| 文章编号： | 1000-7571(2002)02-0049-02 |
| 修稿时间： | 2001年7月6日 |
Successive determination of aluminium and copper in zinc alloy by oscillographic titrimetry |
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| WANG Wei,LU Wei ling.Successive determination of aluminium and copper in zinc alloy by oscillographic titrimetry[J].Metallurgical Analysis,2002,22(2):1-1. |
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| Authors: | WANG Wei LU Wei ling |
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| Abstract: | In this paper,the successive determination of aluminum and copper in zinc alloy by oscillographic titration was studied After the sample dissolved,in the buffer solution of HAc NH 4Ac at pH5 5,EDTA demasked respectively from Al EDTA and Cu EDTA complex with the addition of fluoride and thiourea was suceessively titrated by oscillography with the standard solution of zinc The contents of aluminium and copper could be indirectly calculated The method has a good selectivity and high accuracy The recovery was 99 5%-100 5% and RSD was less than 0 5% |
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| Keywords: | oscillographic titration zinc alloy aluminium copper |
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