Spectroscopy and Spectral Analysis, Volume. 38, Issue 4, 1160(2018)
A Fluorescent Probe Based Host-Guest Complexation Between Cucurbit[7]uril and Neutral Red for the Detection of Paraquat Herbicide in Water Sample
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.
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TANG Qing, ZHANG Jing, SONG Gui-xian, XI Yun-yun, HUANG Ying, TAO Zhu, ZHOU Qing-di, WEI Gang. A Fluorescent Probe Based Host-Guest Complexation Between Cucurbit[7]uril and Neutral Red for the Detection of Paraquat Herbicide in Water Sample[J]. Spectroscopy and Spectral Analysis, 2018, 38(4): 1160
Received: Sep. 20, 2016
Accepted: --
Published Online: Jun. 12, 2018
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