A highly sensitive bio-barcode immunoassay for multi-residue detection of organophosphate pesticides based on fluorescence anti- quenching
文献类型： 外文期刊
第一作者： Xu, Lingyuan
作者： Xu, Lingyuan;Zhang, Xiuyuan;Wang, Yuanshang;Cao, Zhen;Cui, Xueyan;Zhang, Yudan;Wang, Kun;She, Yongxin;Jin, Fen;Zheng, Lufei;Wang, Jing;Jin, Maojun;Abd El-Aty, A. M.;Abd El-Aty, A. M.;Hacimuftuoglu, Ahmet;Jia, Huiyan;Salvador, J. -Pablo;Salvador, J. -Pablo;Pujia, Baima;Jin, Maojun;Hammock, Bruce D.;Jin, Maojun;Hammock, Bruce D.
作者机构：
关键词： Organophosphate pesticides; Fluorescence anti-quenching; Gold nanoparticles; DNA-RNA hybridization; DNA oligonucleotides; Ribonuclease H
期刊名称：JOURNAL OF PHARMACEUTICAL ANALYSIS （ 影响因子：14.026； 五年影响因子：10.493 ）
ISSN： 2095-1779
年卷期： 2022 年 12 卷 4 期
页码：
收录情况： SCI
摘要： Balancing the risks and benefits of organophosphate pesticides (OPs) on human and environmental health relies partly on their accurate measurement. A highly sensitive fluorescence anti-quenching multi-residue bio-barcode immunoassay was developed to detect OPs (triazophos, parathion, and chlorpyrifos) in apples, turnips, cabbages, and rice. Gold nanoparticles were functionalized with monoclonal antibodies against the tested OPs. DNA oligonucleotides were complementarily hybridized with an RNA fluorescent label for signal amplification. The detection signals were generated by DNA-RNA hybridization and ribonuclease H dissociation of the fluorophore. The resulting fluorescence signal en-ables multiplexed quantification of triazophos, parathion, and chlorpyrifos residues over the concen-tration range of 0.01-25, 0.01-50, and 0.1-50 ng/mL with limits of detection of 0.014, 0.011, and 0.126 ng/mL, respectively. The mean recovery ranged between 80.3% and 110.8% with relative standard deviations of 7.3%-17.6%, which correlate well with results obtained by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The proposed bio-barcode immunoassay is stable, reproducible and reliable, and is able to detect low residual levels of multi-residue OPs in agricultural products. (c) 2022 The Author(s). Published by Elsevier B.V. on behalf of Xi'an Jiaotong University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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