| 镧-3-茜素甲基胺一N,N-二乙酸荧光光度法测定水样中痕量氟离子的研究 |
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| 引用本文： | 梁英,黄祖洪,李学军.镧-3-茜素甲基胺一N,N-二乙酸荧光光度法测定水样中痕量氟离子的研究[J].光谱实验室,2009,26(5):1247-1252. |
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| 作者姓名： | 梁英 黄祖洪 李学军 |
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| 作者单位： | 桂林电子科技大学八院环境工程教研室,广西桂林市金鸡路1号,541004 |
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| 摘 要： | 3-茜素甲基胺-N,N-二乙酸（ALC）具有荧光性质,La^3＋可与ALC生成二元络合物La-ALC而显著猝灭其荧光强度,但F-与La-ALC进一步形成三元络合物时会增强该二元络合物的荧光强度,基于此建立了水样中痕量F-的La-ALC荧光光度测定新方法。对试剂用量、pH值的影响和反应时间等实验参数进行了优化选择,考察了淡水中常见离子的干扰情况。在优化的实验条件下,方法的线性范围为0.050-0.600μg/mL,检出限为0.027μg/mL,分别对0.100和0.400μg/mL的标准溶液平行测定6次,相对标准偏差（RSD）分别为2.95%和1.99%。以自来水、河水和矿泉水等水样为基底,进行加标回收实验,加标回收率介于98%—111%之间。本法用于矿泉水样的测定,与GB 7483-87的测定结果无显著差异。
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| 关 键 词： | 3-茜素甲基胺-N N-二乙酸 荧光光度法 氟离子 |
Study on the Determination of Trace Fluoride Ions in Water by Spectrofluorophotometer Based on Aliazrin-3-Methylamine-N,N-Diacetic Acid-Lanthanum |
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| LIANG Ying,HUANG Zu-Hong,LI Xue-Jun.Study on the Determination of Trace Fluoride Ions in Water by Spectrofluorophotometer Based on Aliazrin-3-Methylamine-N,N-Diacetic Acid-Lanthanum[J].Chinese Journal of Spectroscopy Laboratory,2009,26(5):1247-1252. |
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| Authors: | LIANG Ying HUANG Zu-Hong LI Xue-Jun |
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| Institution: | Group of Environmental Engineering;The 8th Department;Guilin University of Electronic Technology;Guilin;Guangxi 541004;P.R.China |
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| Abstract: | Aliazrin-3-methylamine-N,N-diacetic acid(ALC)-Lanthanum is a fluorescent,and the fluorescence intensity could be quenched by lanthanum ion by forming La-ALC complex, however,ternary complex formation with fluoride(La-ALC-F) would be enhanced fluorescence intensity of La-ALC complex.A novel spectrofluorophotometery for the determination of trace fluoride was established based on this fluorencence enhancement.Experimental parameters,including the reagent concentrations,the effect of pH and the reaction time,w... |
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| Keywords: | Aliazrin-3-Methylamine-N N-Diacetic Acid Spectrofluorophotometry Fluoride Ions |
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