Highly sensitive fluorescent sensing platform for imidacloprid and thiamethoxam by aggregation-induced emission of the Zr(Ⅳ) metal - organic framework.

Autor: Xu Y; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China., Pu Y; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China., Jiang H; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China., Huang Y; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China., Shen C; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China., Cao J; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China., Jiang W; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China. Electronic address: jwb@cau.edu.cn.
Jazyk: angličtina
Zdroj: Food chemistry [Food Chem] 2022 May 01; Vol. 375, pp. 131879. Date of Electronic Publication: 2021 Dec 17.
DOI: 10.1016/j.foodchem.2021.131879
Abstrakt: A novel luminescent UiO-66-NH 2 (UN) demonstrated great potentials to sense imidacloprid (IM) and thiamethoxam (TH) pesticides with high sensitivity and desirable selectivity. The UN exhibits superb luminescence emission properties, which have been found to enhance the aggregation-induced emission (AIE) of IM and TH. The enhanced AIE of IM and TH on UN has been applied for the sensitive sensing of IM and TH, and a limit of detection (LOD) of IM was estimated to be 5.57 μg/L. LOD of TH was found to be 0.98 μg/L, respectively. Interestingly, the other neonicotinoid pesticides showed a low interference response in recognition of IM and TH. More importantly, we have further demonstrated that the UN are successfully used to sense IM and TH in real samples of fruit juice with a high recovery of 85-116%, and relative standard deviation (RSD) were from 3.42% to 16.07%.
(Copyright © 2021 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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