Hinge-like paper-based dual-channel enzyme-free ratiometric fluorescent microfluidic platform for simultaneous visual detection of carbaryl and glyphosate.

Autor: Yang Y; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China; Institute of Chinese Medicine Resources, Hunan Academy of Chinese Medicine, Changsha 410013, Hunan, China., Tong C; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China., Zhou R; Institute of Chinese Medicine Resources, Hunan Academy of Chinese Medicine, Changsha 410013, Hunan, China; Central Laboratory, The Affiliated Hospital of Hunan Academy of Chinese Medicine, Changsha 410000, Hunan, China., Qin Z; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China., Xu J; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China., Liao C; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China., Zhang S; Institute of Chinese Medicine Resources, Hunan Academy of Chinese Medicine, Changsha 410013, Hunan, China. Electronic address: zhangshuihan0220@126.com., Shi S; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China; Department of Clinical Pharmacology, Xiangya Hospital, Hunan Key Laboratory of Pharmacogenetics, Central South University, Changsha 410078, Hunan, China. Electronic address: shuyshi@csu.edu.com., Guo Y; Department of Clinical Pharmacology, Xiangya Hospital, Hunan Key Laboratory of Pharmacogenetics, Central South University, Changsha 410078, Hunan, China. Electronic address: guoying881212@csu.edu.cn.
Jazyk: angličtina
Zdroj: Food chemistry [Food Chem] 2024 Jan 15; Vol. 431, pp. 137127. Date of Electronic Publication: 2023 Aug 11.
DOI: 10.1016/j.foodchem.2023.137127
Abstrakt: On-site multi-pesticide residues detection is particularly urgent and challenging. Here, we fabricated an enzyme-free ratiometric fluorescent detection system in combination with a hinge-like dual-channel 3D microfluidic paper analytical device (3D μPAD) for simultaneous visual detection of carbaryl and glyphosate. Blue-emission 1-naphthol (Em. 470 nm) was hydrolyzed from carbaryl, while yellow-emission 2,3-diaminophenazine (Em. 570 nm) was produced with the aid of Cu 2+ for glyphosate sensing. Inner-filter effect between 1-naphthol or 2,3-diaminophenazine and green-emission carbon dots (Em. 510 nm) realized two ratiometric fluorescent detection systems. Remarkable color variation of green-blue for carbaryl (50.00-1100 μΜ) and yellow-green for glyphosate (5.00-600 μΜ) were observed on a dual-channel 3D μPAD without crosstalk. Their detection limits were 1.11 and 0.63 μΜ, respectively. The strategy realized simultaneous visual detection of carbaryl and glyphosate in food/herbal with excellent accuracy (spiked recoveries, 91.00-107.2%), high precision (RSD ≤ 8.43%), and superior selectivity.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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