A double-label time-resolved fluorescent strip for rapidly quantitative detection of carbofuran residues in agro-products

文献类型： 外文期刊

第一作者： Qu, Qiaoyu

作者： Qu, Qiaoyu;Chen, Shanshan;Liu, Xiaowei;Zhang, Qi;Li, Peiwu

作者机构：

关键词： Double-label;Time-resolved fluorescent immunochromatographic assay (TRFICA);N-Methylcarbamate pesticide;Carbofuran;Residue;Agro-products

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN：

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收录情况： SCI

摘要： A rapid and quantitative time-resolved fluorescent immunochromatographic assay (TRFICA) for detecting carbofuran residues in agro-products was reported in this paper. This assay was developed based on double-label immunoprobes, one of which was a carbofuran-specific antibody coupled with europium microbeads for the test (T) line signal while the other was mouse IgG coupled with europium microbeads for the control (C) line signal. Quantitative relationships between carbofuran concentrations and T/C ratios were established to determine the analyte concentration. To increase assay accuracy, four standard curves were established for the agro-products (green bean, cabbage, apple, and pear). The limits of detection (LODs) ranged from 0.04 to 0.76 mg L-1. The spiked recoveries of carbofuran in the agro-products were in the range of 81-103%, which was in good agreement with a standard HPLC method. Therefore, we provided a new and reliable method for determination of N-methylcarbamate pesticide carbofuran residues in agro-products including vegetables and fruits. (C) 2017 Published by Elsevier Ltd.

分类号： TS2`TS201.2

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