Lanthanum ions assisted non-enzymatic ratiometric fluorescence probe for monitoring fenthion residues in agro-product samples
文献类型： 外文期刊
作者： Guan, Mengting 1 ; He, Haibo 1 ; Li, Ruxing 1 ; Si, Xiaojing 3 ; Peng, Xitian 4 ; Yan, Xiaoxia 1 ; Yang, Zhaosheng 1 ; Nien, Enhsuan 1 ; Lei, Yunyi 1 ; Luo, Liqiang 1 ;
作者机构： 1.Shanghai Univ, Coll Sci, Dept Chem, Shanghai 200444, Peoples R China
2.Shanghai Aurora Coll, Sch Publ Hlth, Shanghai 201908, Peoples R China
3.Shanghai Business Sch, Dept Food Sci, Shanghai 200235, Peoples R China
4.Hubei Acad Agr Sci, Inst Agr Qual Stand & Testing Technol Res, Wuhan 430064, Peoples R China
关键词： Carbon dots; Gold nanoclusters; La3+; Ratiometric fluorescence; Non-enzymatic probe; Fenthion
期刊名称：ANALYTICA CHIMICA ACTA （ 影响因子：6.911； 五年影响因子：6.467 ）
ISSN： 0003-2670
年卷期： 2022 年 1236 卷
页码：
收录情况： SCI
摘要： In this work, a La3+ assisted glutathione-capped gold nanoclusters and carbon dots (GSH-Au NCs/CDs) nano -platform for sensitive detection of fenthion (FEN) is fabricated. The fluorescence response of GSH-Au NCs significantly increases due to aggregation-induced emission enhancement (AIEE) effect induced by La3+, which is further enhanced with adding FEN due to the coordination between La3+ and FEN. Taking the fluorescence intensity of CDs as the signal background, the ratiometric fluorescence of GSH-Au NCs and CDs has a good linear relationship with the FEN concentration from 0.01 to 1.10 mu g mL-1, and detecting FEN exhibits a good sensitivity at a low detection limit of 6.74 ng g-1. The La3+ assisted GSH-Au NCs/CDs nanoplatform demonstrates desirable selectivity and applicability for monitoring trace level of FEN in fruit and vegetable samples. The non-enzymatic strategy by taking advantage of successive AIEE of GSH-Au NCs has a great potential for facile screening organophosphate pesticides in agro-products.
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