Label-Free Colorimetric Detection of Prothioconazole Using Gold Nanoparticles Based on One-Step Reaction

文献类型： 外文期刊

第一作者： Zhou, Ying

作者： Zhou, Ying;Li, Congdi;Chen, Zenglong;Li, Li;Li, Wei;Yuan, Longfei;Li, Congdi;He, Yujian;Liu, Rong

作者机构：

关键词： gold nanoparticles; prothioconazole; colorimetric detection; hydrogen bonds

期刊名称：ACS BIOMATERIALS SCIENCE & ENGINEERING （ 影响因子：4.749； 五年影响因子：5.289 ）

ISSN： 2373-9878

年卷期： 2020 年 6 卷 5 期

页码：

收录情况： SCI

摘要： One simple, sensitive detection method for pesticide prothioconazole based on citrate-capped gold nanoparticles (AuNPs) in one step at room temperature was presented in this study. Prothioconazole could be easily linked onto the AuNPs through a Au-S covalent bond, and AuNPs undergo aggregation via hydrogen bonds formed among prothioconazole molecules. As a result, the color of AuNP solution changes from wine red to royal purple, which could be monitored by naked eyes and UV-vis spectra. This label-free visual detection method could determine prothioconazole with concentrations ranging from 1.33 to 19.99 mu g/L with a detection limit of 0.38 mu g/L (S/N = 3). This method was convenient and free of complex equipment and successfully applied to prothioconazole determination in rice field water where it gave satisfactory recoveries.

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