| 连续流动液─液萃取石墨炉原子吸收分析系统的设计及其性能 |
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| 引用本文： | 林守麟,赵清华,俞桂莲. 连续流动液─液萃取石墨炉原子吸收分析系统的设计及其性能[J]. 分析科学学报, 1994, 0(1) |
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| 作者姓名： | 林守麟 赵清华 俞桂莲 |
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| 作者单位： | 中国地质大学应用化学系 |
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| 摘 要： | 求文研究了在线液一液萃取石墨炉原子吸收分析技术，设计了一种半自动萃取流路系统及其与石墨炉的接口装置．采用一步萃取操作，比较了直接水相测定和萃取测定ＡＵ和Ｃｄ的结果，表明该流路系统性能较好。在萃取测定中，ＡＵ和Ｃｄ的检出限分别为０．０７７和０．０５５ｎｇ／ｍＬ；精密度为Ａｕ４．１％（５．５ｎｇ／ｍＬ）和Ｃｄ４．９％（０．２５ｎｇ／ｍＬ）标准样品分析结果与推荐值吻合，采样频率为２０—３０／ｈ．
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| 关 键 词： | 连续流动液─液萃取，重力分相器，石墨炉原子吸收，接口装置，金，镉 |
The Design of an On-Line Flow Injection System with a Gravitational phase Separator for Graphite Furnace Atomic Absorption Spectrometry and Its Analytical performance |
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| soulin Lin, Chinghwa Zhao, Guilian Yu. The Design of an On-Line Flow Injection System with a Gravitational phase Separator for Graphite Furnace Atomic Absorption Spectrometry and Its Analytical performance[J]. Journal of Analytical Science, 1994, 0(1) |
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| Authors: | soulin Lin Chinghwa Zhao Guilian Yu |
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| Affiliation: | Department of Applied Chemistry China University of Geosciences Wuhan 430074P.R.China |
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| Abstract: | A liquid liquid flow extraction system associated with a specially designed phase separator has been developed, A common trisection confluence connector was used for segmentation The system was hybrided to a graphite furnace atomic absorption spectrometer by a simple interface.The performance of the system was studied with respect to An and Cd, The detection Iimits were 0. 077ng/mL for An and 0. 0005ng/mL for Cd and the precision were 4. 1 % and 4. 9% respectively. The sample throughput was 20-30/h. Results of real sample analysis were in good agreement with certified values |
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| Keywords: | continuous flow liquid-liquid extraction gravitational phase separator graphite furnace atomie absorption spectrometry interface gold cadmium |
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