| 流动注射化学发光法测定痕量NO_2~-的研究与应用 |
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| 引用本文： | 肖新峰,罗娅君,孙琳.流动注射化学发光法测定痕量NO_2~-的研究与应用[J].化学研究与应用,2009,21(7). |
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| 作者姓名： | 肖新峰 罗娅君 孙琳 |
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| 作者单位： | 1. 山东科技大学化学与环境工程学院,山东,青岛,266510
2. 绵阳师范学院化学与化学工程系,四川,绵阳,621000 |
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| 摘 要： | Based on the principle of the reaction of NO2-with I-and formation of I2 in HCl solution,and the chemiluminescence(CL) reaction between luminol and I2 in an alkaline medium.A fairly sensitive,simple and rapid flow-injection analysis-chemiluminescence method for the determina-tion of trace nitrite with the luminal-I——NO2-coupling luminescence system has been developed.Experiment conditions of flow-injection analysis are optimized.When satisfying the condition that Luminol as 4.0×10-4 mol/L,0.7 % KI,0.04 mol/...
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| 关 键 词： | 亚硝酸盐 流动注射分析 化学发光 |
Research and analytical application on determination of trace nitrite by flow injection chemiluminescence analysis |
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| XIAO Xin-feng,LUO Ya-jun,SUN Lin.Research and analytical application on determination of trace nitrite by flow injection chemiluminescence analysis[J].Chemical Research and Application,2009,21(7). |
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| Authors: | XIAO Xin-feng LUO Ya-jun SUN Lin |
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| Institution: | 1.College of chemistry and environment engineering;Shandong University of Science & Technology;Qingdao 266510;China;2.The Department of Chemistry and Chemical Engineering;Mianyang normal University;Mianyang 621000;China |
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| Abstract: | Based on the principle of the reaction of NO2- with I- and formation of I2 in HCl solution,and the chemiluminescence(CL) reaction between luminol and I2 in an alkaline medium.A fairly sensitive,simple and rapid flow-injection analysis-chemiluminescence method for the determina- tion of trace nitrite with the luminal-I--NO2- coupling luminescence system has been developed.Experiment conditions of flow-injection analysis are optimized.When satisfying the condition that Luminol as 4.0×10-4 mol/L,0.7 % KI,0.04 mol/L HCl;the length of reaction coil as 250 cm;the velocity of primary pump as 10r/min;the velocity of ancillary pump as 20 r/min.Under optimum conditions,the detection limit for NO2- is 0.5 μg/L,the linear range of the determination is 1.0～100.0 μg/L.The method can be applied to determination of trace NO2- in environmental water and green stuff with satisfactory results. |
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| Keywords: | Nitrite Flow injection analysis Chemiluminescence |
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