Dual-mode detection of organophosphate pesticides in pear and Chinese cabbage based on fluorescence and AuNPs colorimetric assays
Özet
© 2021 Elsevier LtdHerein, a dual-mode method based on fluorescent and colorimetric sensor was developed for determination of organophosphate pesticides (OPs). In this study, indoxyl acetate (IDA) was hydrolyzed by esterase into indophenol. Indophenol leads to changes in fluorescence signal and aggregation of gold nanoparticles (AuNPs); ultimately changing the color from red to blue. When OPs exist, the formation of indophenol was inhibited. With increasing the concentrations of OPs, the enhancement rate of fluorescence signal decreases, and the color change of AuNPs weakened gradually. The assay was applied for determination of dichlorvos, trichlorfon, and paraoxon, and the limits of detection (LODs) were 0.0032 mg/kg, 0.0096 mg/kg, and 0.0074 mg/kg (fluorometric assay), and 0.0120 mg/kg, 0.0224 mg/kg, and 0.0106 mg/kg (colorimetric assay), respectively. Finally, such a convenient and sensitive sensing assay was successfully applied for quantification of OPs in pear and Chinese cabbage with good recoveries ranged between 80.19 and 116.93%.
Anahtar kelimeler
Atıf için künye
Yu, H., Wang, M., Cao, J., She, Y., Zhu, Y., Ye, J., Hassıbelnaby, A. M. A., Hacımüftüoğlu, A., Wang, J., & Lao, S. (2021). Dual-mode detection of organophosphate pesticides in pear and Chinese cabbage based on fluorescence and AuNPs colorimetric assays. FOOD CHEMISTRY, 364. https://doi.org/10.1016/j.foodchem.2021.130326
BibTeX
@article{yu2021-209781,
author = {Yu, He and Wang, Miao and Cao, Jing and She, Yongxin and Zhu, Yongan and Ye, Jiaming and Hassıbelnaby, Abdelaty Mostafa Abdelaty and Hacımüftüoğlu, Ahmet and Wang, Jing and Lao, Shuibing},
title = {Dual-mode detection of organophosphate pesticides in pear and Chinese cabbage based on fluorescence and AuNPs colorimetric assays},
journal = {FOOD CHEMISTRY},
year = {2021},
volume = {364},
issn = {0308-8146},
doi = {10.1016/j.foodchem.2021.130326},
url = {https://akademik.atauni.edu.tr/yayinlar/209781-dual-mode-detection-of-organophosphate-pesticides-in-pear-and-chinese-cabbage}
}