超分子荧光探针用于环境水样中百草枯的测定

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

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Abstract 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 (ΔF=4.98+0.32c, ｒ=0.999 1) was observed between the fluorescence intensity and the concentration of PQ over the concentration range (1~8)×10^-6 mol·L^-1. The detection limit for PQ was 1.40×10^-8 mol·L^-1. Recoveries obtained with the proposed method in river water examples were 104%~108%. Such method provides a rapid, selective and sensitive strategy for herbicide detection in real samples.

Key words：Cucurbit[7]uril; Neutral red; Fluorescent probe; Paraquat

Received: 2016-09-20 Accepted: 2017-01-30

ZTFLH:

O657.3

Corresponding Authors: HUANG Ying, WEI Gang E-mail: yinghung128@163.com；Gang.wei@csiro.au

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https://www.gpxygpfx.com/EN/10.3964/j.issn.1000-0593(2018)04-1160-05 OR https://www.gpxygpfx.com/EN/Y2018/V38/I04/1160

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