In-situ monitoring of nitrile-bearing pesticide residues by background-free surface-enhanced Raman spectroscopy  

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作  者:Guorui Wu Wenshuai Li Weijun Du Aiqin Yue Jinzhong Zhao Dingbin Liu 

机构地区:[1]College of Agronomy,Shanxi Agricultural University,Taigu 030801,China [2]College of Arts and Sciences,Shanxi Agricultural University,Taigu 030801,China [3]State Key Laboratory of Medicinal Chemical Biology,Research Center for Analytical Sciences,and Tianjin Key Laboratory of Biosensing and Molecular Recognition,College of Chemistry,Nankai University,Tianjin 300071,China

出  处:《Chinese Chemical Letters》2022年第1期519-522,共4页中国化学快报(英文版)

基  金:the support from the Shanxi Province Key R&D Plans(Nos.201903D211006-1 and 201803D221020-2);the Natural Science Foundation of Shanxi Province(No.201901D111225);the National Natural Science Foundation of China(Nos.21775075 and 21977053);the Fundamental Research Funds for the Central Universities,Nankai University(No.2122018165)。

摘  要:In-situ monitoring of pesticide residues during crop growth or/and in related products is of great significance in avoiding the abuse of pesticides but remains challenging thus far.In this report,we proposed a background-free surface-enhanced Raman spectroscopy(bf-SERS)platform to non-destructively track the nitrile-bearing pesticide residues in soybean leaves with high sensitivity and selectivity.The outstanding feature of the assay stems from the dramatic Raman enhancement effect of the 50 nm-sized gold nanoparticles(AuNPs)towards the pesticides and simultaneously the background-free Raman signal of the nitrile group in the so-called Raman-silent region(1800-2800 cm^(-1)).This bf-SERS assay was applied to evaluate the penetration effects of nitrile-bearing pesticides and monitor their residues in soybean leaves after rinsing with various solutions,providing a reliable tool for guiding the safe use of nitrile-bearing pesticides in agriculture.

关 键 词:Nitrile-bearing pesticide residues Background-free SERS In-situ detection Chemical sensing Food safety 

分 类 号:TQ450.263[化学工程—农药化工] O657.37[理学—分析化学]

 

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