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Nanozyme-assisted technique for dual mode detection of organophosphorus pesticide
Jinchao Wei; Lele Yang; Mai Luo; Yitao Wang; Peng Li
2019-04-22
Source PublicationECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
ISSN0147-6513
Volume179Pages:17-23
Abstract

A novel dual-mode analytical method by employing nanozyme was developed for the detection of organophosphorus pesticides (OPP) for the first time. The detection principle is that the pesticide could be hydrolyzed to para-nitrophenol (p-NP) in the presence of nanoceria as nanozyme. p-NP exhibits the bright yellow color, and its color intensity has a positive correlation with the pesticide concentration. Meanwhile, the characteristic absorption peak at 400 nm of p-NP increases gradually with the raised concentration of pesticide. Therefore, a dual-mode method including smartphone-based colorimetric and spectroscopic strategies was rationally developed. Herein, methyl-paraoxon was selected as the representative compound. Under the optimum conditions, the detection limits of both two strategies were calculated to be 0.42 mu mol L-1. Finally, the present method was successfully applied in three edible medicinal plants (Semen nelumbinis, Semen Armeniacae Amarum, Rhizoma Dioscoreae). The present work offers a reliable and convenient approach for routine detection of pesticide based on two different detection mechanisms.

KeywordNanozyme Edible Medicinal Plant Environment Contaminant Nanoparticle Degradation
DOI10.1016/j.ecoenv.2019.04.041
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Toxicology
WOS SubjectEnvironmental Sciences ; Toxicology
WOS IDWOS:000469161200003
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE, 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
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Cited Times [WOS]:6   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionInstitute of Chinese Medical Sciences
Corresponding AuthorPeng Li
AffiliationState Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
First Author AffilicationInstitute of Chinese Medical Sciences
Corresponding Author AffilicationInstitute of Chinese Medical Sciences
Recommended Citation
GB/T 7714
Jinchao Wei,Lele Yang,Mai Luo,et al. Nanozyme-assisted technique for dual mode detection of organophosphorus pesticide[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2019,179:17-23.
APA Jinchao Wei,Lele Yang,Mai Luo,Yitao Wang,&Peng Li.(2019).Nanozyme-assisted technique for dual mode detection of organophosphorus pesticide.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,179,17-23.
MLA Jinchao Wei,et al."Nanozyme-assisted technique for dual mode detection of organophosphorus pesticide".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 179(2019):17-23.
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