摘要
基于七元瓜环可使中性红的荧光增强从而设计荧光探针,当在荧光探针中加入百草枯后荧光强度又逐渐降低,利用此种超分子配合物的荧光"开-关"效应,从而建立了一种新颖的检测百草枯的荧光方法。当百草枯浓度在(1~8)×10^(-6 )mol·L^(-1)范围内,百草枯浓度与探针的荧光强度具有良好的线性关系,且检出限为1.4×10^(-8 )mol·L^(-1),加标回收率为104%~108%,可在河水样品中检测百草枯的含量。
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 theherbicide paraquat.The Q[7]/NR complex can be used to detect paraquat with high selectivity using fluorescence spectrometry.A linear correlation(ΔF=4.98+0.32 c,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.
作者
唐青
张静
宋桂先
席芸芸
黄英
陶朱
周清娣
卫钢
TANG Qing;ZHANG Jing;SONG Gui-xian;XI Yun-yun;HUANG Ying;TAO Zhu;ZHOU Qing-di;WEI Gang(College of Tobacco Science,Guizhou University,Guiyang 550025,China;Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province,Guizhou University,Guiyang 550025,China;School of Chemistry,the University of Sydney,NSW 2006,Australia;Commonwealth Scientific and Industrial Research Organization(CSIRO),Manufacturing,P.O.Box 218,Lindfield,NSW 2070,Australia)
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2018年第4期1160-1164,共5页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(NSFC21562015),贵州省科学技术基金项目(黔科合JZ字[2014]2005号),教育部春晖计划项目(Z2015004)及贵州省普通高等学校科技拔尖人才支持计划项目(黔教合KY字[2016]059)资助