A Fluorescent Probe Based Host-Guest Complexation Between Cucurbit[7]uril and Neutral Red for the Detection of Paraquat Herbicide in Water Sample

被引：2

作者：

Tang Qing ^{[1
]}

Zhang Jing ^{[2
]}

Song Gui-xian ^{[2
]}

Xi Yun-yun ^{[2
]}

Huang Ying ^{[2
]}

Tao Zhu ^{[2
]}

Zhou Qing-di ^{[3
]}

Wei Gang ^{[4
]}

机构：

[1] Guizhou Univ, Coll Tobacco Sci, Guiyang 550025, Guizhou, Peoples R China

[2] Guizhou Univ, Key Lab Macrocycl & Supramol Chem Guizhou Prov, Guiyang 550025, Guizhou, Peoples R China

[3] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia

[4] CSIRO, Mfg, POB 218, Lindfield, NSW 2070, Australia

来源：

SPECTROSCOPY AND SPECTRAL ANALYSIS | 2018年 / 38卷 / 04期

关键词：

Cucurbit[7]uril; Neutral red; Fluorescent probe; Paraquat; QUENCHING METHOD; BETA-CYCLODEXTRIN;

D O I：

10.3964/j.issn.1000-0593(2018)04-1160-05

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

We have now shown that a host-guest complex between cucurbit[7]uril (Q[7]) and neutral red (NR) can be used as a fluorescent probe for detecting the herbicide paraquat. The Q[7]/NR complex can be used to detect paraquat with high selectivity using fluorescence spectrometry. A linear correlation (Delta F=4.98+0.32c, r=0.999 1) was observed between the fluorescence intensity and the concentration of PQ over the concentration range (1 similar to 8) X 10(-6) mol.L-1. The detection limit for PQ was 1. 40 X 10(-8) mol.L-1. Recoveries obtained with the proposed method in river water examples were 104%similar to 108%. Such method provides a rapid, selective and sensitive strategy for herbicide detection in real samples.

引用

页码：1160 / 1164

页数：5

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