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Sensors 2018, 18(12), 4302; https://doi.org/10.3390/s18124302

A Simple Colorimetric and Fluorescent Sensor to Detect Organophosphate Pesticides Based on Adenosine Triphosphate-Modified Gold Nanoparticles

Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Received: 18 October 2018 / Revised: 12 November 2018 / Accepted: 4 December 2018 / Published: 6 December 2018
(This article belongs to the Special Issue Colorimetric Nanosensors)
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Abstract

A simple and dual modal (colorimetric and fluorescent) sensor for organophosphate pesticides with high sensitivity and selectivity using adenosine triphosphate (ATP)- and rhodamine B-modified gold nanoparticles (RB-AuNPs), was successfully fabricated. This detection for ethoprophos afforded colorimetric and fluorescence imaging changes visualization. The quantitative determination was linearly proportional to the amounts of ethoprophos in the range of a micromolar scale (4.0–15.0 µM). The limit of detection for ethoprophos was as low as 37.0 nM at 3σ/k. Moreover, the extent application of this simple assay was successfully demonstrated in tap water samples with high reliability and applicability, indicating remarkable application in real samples. View Full-Text
Keywords: organophosphate pesticides; gold nanoparticles; colorimetric and fluorescent sensor; ethoprophos detection; multimodal assay organophosphate pesticides; gold nanoparticles; colorimetric and fluorescent sensor; ethoprophos detection; multimodal assay
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Li, X.; Cui, H.; Zeng, Z. A Simple Colorimetric and Fluorescent Sensor to Detect Organophosphate Pesticides Based on Adenosine Triphosphate-Modified Gold Nanoparticles. Sensors 2018, 18, 4302.

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