| KMnO_4-甲醛流动注射化学发光法测定木犀草素 |
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| 引用本文： | 冯琳.KMnO_4-甲醛流动注射化学发光法测定木犀草素[J].分析试验室,2009,28(11). |
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| 作者姓名： | 冯琳 |
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| 作者单位： | 重庆师范大学化学学院,重庆,400047 |
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| 摘 要： | 在酸性介质中,木犀草素在KMnO4-HCHO体系中产生化学发光,据此建立了一种简便、快速测定木犀草素的化学发光新方法。化学发光强度与木犀草素的浓度在5.0×10-8~1.5×10-5g/mL范围内呈现出良好的线性关系。其检测限(3σ)为3.0×10-8g/mL,对8.0×10-7g/mL的木犀草素溶液进行11次平行测定,相对标准偏差为2.8%。方法可应用于实际样品和合成样品中木犀草素的测定。并探讨了反应的机理。
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| 关 键 词： | 流动注射 化学发光 甲醛 木犀草素 |
Determination of luteolin by flow injection chemiluminescence with potassium permanganate-formaldehyde system |
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| FENG Lin.Determination of luteolin by flow injection chemiluminescence with potassium permanganate-formaldehyde system[J].Chinese Journal of Analysis Laboratory,2009,28(11). |
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| Authors: | FENG Lin |
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| Institution: | FENG Lin(College of Chemistry,Chongqing Normal University,Chongqing 400047) |
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| Abstract: | A flow injection chemiluminescence method for the determination of luteolin, which is based on the enhancement effect of the chemiluminescence produced from the acidic potassium permanganate-formaldehyde system, is described in this paper. Under optimized conditions, the relationship between the enhanced CL intensity and the concentration of luteolin is linear in the ranges of 5.0×10~(-8)～3.0×10~(-1) g/mLand3.0× 10~(-6)～1.5×10~(-5) g/mL with a detection limit (3a) of 3.0×KT8 g/mL. Relative standard deviation (RSD) is 2.8% (n=11) for 8.0×10~7 g/mL luteolin. The proposed method has been successfully applied to the determination of luteolin in real and synthetic samples with satisfactory results. The mechanism of the reaction is also discussed. |
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| Keywords: | KMnO4 |
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