| 流动注射－原子荧光法测定岩矿中痕量硒和碲 |
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| 引用本文： | 杨翼华,杜新军,朱永昌.流动注射－原子荧光法测定岩矿中痕量硒和碲[J].岩矿测试,1996(1). |
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| 作者姓名： | 杨翼华 杜新军 朱永昌 |
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| 作者单位： | 地质矿产部南京地质矿产研究所 |
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| 基金项目： | 中国地质科学院实验管理处资助 |
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| 摘 要： | 讨论了题示方法中的干扰，指出在一般岩石中多数共存元素不干扰Ｓｅ和Ｔｅ的测定；Ｃｕ的干扰可在含Ｆｅ￣３＋、ＨＣｌＯ＿４的介质中加入邻菲罗啉沉淀预先消除；Ｐｂ的干扰可在Ｈ＿２ＳＯ＿４分解试样时形成ＰｂＳＯ＿４消除；试液保存在塑料容器中可免除残留Ｆ￣－的影响。所拟方法每次采样１ｍＬ，每小时测定９０次。对Ｓｅ和Ｔｅ的检出限均为０．２μｇ／Ｌ，测定浓度为１０μｇ／Ｌ的Ｓｅ和Ｔｅ，其ＲＳＤ（ｎ＝１２）分别为３．７％和４．３％。经标样分析验证，方法可行。
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| 关 键 词： | 硒，碲，原子荧光法，流动注射分析 |
Determination of Trace Selenium and Tellurium in Rocks and Minerals by Flow Injection-Atomic Fluorescence Spectrometry |
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| Yang Yihua,Du Xinjun,Zhu Yongchang.Determination of Trace Selenium and Tellurium in Rocks and Minerals by Flow Injection-Atomic Fluorescence Spectrometry[J].Rock and Mineral Analysis,1996(1). |
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| Authors: | Yang Yihua Du Xinjun Zhu Yongchang |
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| Abstract: | The interference of foreign ions was investigated,and it was found that most elements present in common rocks have no effect.The interference of Cu can be eliminated by precipitation with o-phenanthroline.The interference of Pb can be removed in the decomposition of the sample with H_2SO_4.The residual HF does not interfere in case the sample solution is kept in a plastic container, but interferes seriously if glass containers are used.The detection limits of Se and Te are 0. 2 ng/mL.The RSD of Se and Te are 3. 7% and 4.3% respectively.A sampling volume of 1mL is used and the sampling rate is 90 samples per hour. |
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| Keywords: | flow injection analysis atomic fluorescence spectrometry selenium tellurium |
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