单(6-对氨基苯甲酸-6-脱氧)-<I>β</I>-环糊精的合成及其对Cr(Ⅵ)的荧光识别

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摘要：合成了新型荧光探针单(6-对氨基苯甲酸-6-脱氧)-β-环糊精(ACD)。探讨了与Cr₂O^2-₇的识别反应。在pH 4.90的NaAc-HAc缓冲溶液中，Cr₂O^2-₇能使ACD的荧光猝灭，据此建立了测定Cr(Ⅵ)的新方法，在最优化实验条件下，线性范围为5.20～1 040 μg· L^-1，检出限1.26 μg· L^-1。22种常见离子干扰实验结果表明该试剂对Cr₂O^2-₇有较高的选择性识别效果。此法用于电镀液、电镀废液中痕量Cr(Ⅵ)的测定，结果令人满意。

关键词：单(6-对氨基苯甲酸-6-脱氧)-β-环糊精;荧光探针;铬(Ⅵ)

Abstract：A novel fluorescence probe, mono[6-o-(4-aminobenzoic acid)]-β-cyclodextrin(ACD), was synthesized, and a new sensitive fluorescence identification reaction was studied based on the reaction of Cr₂O^2-₇ with compound ACD in NaAc-HAc buffer medium at pH 4.90.Under optimal conditions the determination limit was 1.26 μg· L^-1.The linear range was 5.20-1 040 μg· L^-1.This method has been applied to the determination of trace amounts of chromium (Ⅵ)in electroplating liquor, electroplating waste water with satisfactory results.

Key words：Mono[6-o-(4-aminobenzoic acid)]-β-cyclodextrin;Fluorescence probe;Chromium (Ⅵ)

收稿日期: 2003-12-23 修订日期: 2004-05-20

中图分类号:

O659.3

通讯作者: 王伦

引用本文:

章丽, 佘世科, 高峰, 周运友, 朱昌青，王伦^* . 单(6-对氨基苯甲酸-6-脱氧)-β-环糊精的合成及其对Cr(Ⅵ)的荧光识别[J]. 光谱学与光谱分析, 2005, 25(07): 1103-1105.
ZHANG Li, SHE Shi-ke, GAO Feng, ZHOU Yun-you, ZHU Chang-qing,WANG Lun^* . Highly Sensitive Spectrofluorimetric Determination of Trace Amounts of Chromium(Ⅵ) with Mono[6-o-(4-Aminobenzoic Acid)]-β-Cyclodextrin . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(07): 1103-1105.

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https://www.gpxygpfx.com/CN/Y2005/V25/I07/1103