| 铽—EDTA—龙胆酸荧光体系的研究 |
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| 引用本文： | 张素斌 赵慧春. 铽—EDTA—龙胆酸荧光体系的研究[J]. 北京师范大学学报(自然科学版), 1999, 35(4): 500-503 |
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| 作者姓名： | 张素斌 赵慧春 |
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| 作者单位： | 北京师范大学化学系!北京１００８７５ |
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| 摘 要： | 根据龙胆酸与Ｔｂ－ＥＤＴＡ在碱性溶液中能形成三元配合物产生铽的敏化荧光，建立了检测龙胆酸的高灵敏、高选择性的新方法。在所选定的最佳条件下，龙胆酸的浓度在４．０×１０＾－８～４．０×１０＾－６ｍｏｌ．Ｌ＾－１范围内与体系相对荧光强度成良好的线性关系，方法的检测限为６．９×１０＾－９ｍｏｌ．Ｌ＾－１。用该法不经任何分离测定了血浆、血清、尿样中龙胆酸的回收实验，结果满意。
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| 关 键 词： | 铽 EDTA 龙胆酸 荧光光度法 荧光体系 |
A STUDY OF THE FLUORESCENCE SYSTEM OF Tb-EDTA-GENTISIC ACID |
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| Zhang Subin, Zhao Huichun. A STUDY OF THE FLUORESCENCE SYSTEM OF Tb-EDTA-GENTISIC ACID[J]. Journal of Beijing Normal University(Natural Science), 1999, 35(4): 500-503 |
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| Authors: | Zhang Subin Zhao Huichun |
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| Abstract: | Based on the formatinn of a termary complex between gentisic acid, Tb3+ andEDTA in alkaline aqueous solution, a new sensitive and selective fluorimetric method for thedetennination of gentisic add is established. Under the optimum experimental conditions, thelinear range of the detendnation is 4.0 x 10-8 - 4.0 x 10-6mol. L-1, and the detection fort is6.9 x 10-9 mol. L-1. The method is suusfully applied to the detendnation of gentisic acidin untreated human serum plasma and urine samples. Analytical recoveries from there samplessped with gentisic acid are detennined with satisfaction. |
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| Keywords: | terbium EDTA gentisic acid fluorimetry |
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