| 火焰原子吸收法中有机络合剂对铬的增感效应的研究 |
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| 引用本文： | 张九福.火焰原子吸收法中有机络合剂对铬的增感效应的研究[J].中南大学学报(自然科学版),1988(3). |
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| 作者姓名： | 张九福 |
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| 作者单位： | 中心分析室 |
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| 摘 要： | 本文研究了火焰原子吸收法中有机络合剂对铬的增感效应。在空气-乙炔富燃焰中,0.5%的柠檬酸钠、酒石酸钠、酒石酸钾钠使铬的吸光度增加70%,并能消除钾、钠、钙、镍、铜、锡、锰镁的干扰。探讨了增感效应的机理,认为有机络合剂存在时,气溶胶离子的收缩效应增大、侧向扩散减少是增感的主要原因。
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| 关 键 词： | 原子吸收分光光度法 铬 络合剂 有机化合物 增感剂 光学增感/增感效应 |
A STUDY OF ENHANCEMENT EFFECT OF ORGANIC COMPLEXING AGENT ON CHROMIUM IN FLAME ATOMIC ABSORPTION SPECTROMETRY |
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| Zhang Jiufu Chemical Analyses Centre.A STUDY OF ENHANCEMENT EFFECT OF ORGANIC COMPLEXING AGENT ON CHROMIUM IN FLAME ATOMIC ABSORPTION SPECTROMETRY[J].Journal of Central South University:Science and Technology,1988(3). |
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| Authors: | Zhang Jiufu Chemical Analyses Centre |
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| Institution: | Zhang Jiufu Chemical Analyses Centre |
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| Abstract: | In this paper the enhancement effect of organic complexing agent on chromium
in flame atomic absorption spectrometry is studied.In air-acetylene fuel-rich flame,
Owing to the presence of 0.5% sodium citrate,sodium tartrate,sulphosalicylic acid
and disodium ethylenedimine tetraacetale,the absorbance of chromium increases by
70% and the interference with K,Na,Ca,Mg,Cu,Sn,Mn,Ni can be eliminated.
The mechanism of enhancement effect is also discussed.It is suggested that the
increase in contracting effect of aerosolion and the decrease in its side diffusion in
the presence of organic complexing agent is the primary factor of enhancement. |
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| Keywords: | atomic absorptiom spectrophotometry chromium complexing agent organie compounds sensitizer optical sensitization/enhancement effect |
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