1. 贵州大学烟草学院，贵州 贵阳 550025
2. 贵州大学贵州省大环化学及超分子化学重点实验室，贵州 贵阳 550025
3. School of Chemistry, the University of Sydney, NSW 2006, Australia
4. Commonwealth Scientific and Industrial Research Organization (CSIRO), Manufacturing, P.O. Box 218, Lindfield, NSW 2070, Australia
A Fluorescent Probe Based Host-Guest Complexation Between Cucurbit[7]uril and Neutral Red for the Detection of Paraquat Herbicide in Water Sample
TANG Qing1, ZHANG Jing2, SONG Gui-xian2, XI Yun-yun2, HUANG Ying2*, TAO Zhu2, ZHOU Qing-di3, WEI Gang4*
1. College of Tobacco Science, Guizhou University, Guiyang 550025, China
2. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
3. School of Chemistry, the University of Sydney, NSW 2006, Australia
4. Commonwealth Scientific and Industrial Research Organization (CSIRO), Manufacturing, P. O. Box 218, Lindfield, NSW 2070, Australia
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.
唐 青，张 静，宋桂先，席芸芸，黄 英，陶 朱，周清娣，卫 钢. 超分子荧光探针用于环境水样中百草枯的测定[J]. 光谱学与光谱分析, 2018, 38(04): 1160-1164.
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. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(04): 1160-1164.
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