Colorimetric sensing of atrazine in rice samples using cysteamine functionalized gold nanoparticles after solid phase extraction

文献类型： 外文期刊

第一作者： Liu, Guangyang

作者： Liu, Guangyang;Yang, Xin;Wang, Jing;Zou, Pan;Liu, Guangyang;Wang, Shanshan;Li, Tengfei;She, Yongxin;Wang, Jing;Jin, Fen;Jin, Maojun;Shao, Hua;Liu, Guangyang;Wang, Jing

作者机构：

期刊名称：ANALYTICAL METHODS （ 影响因子：2.896； 五年影响因子：2.716 ）

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收录情况： SCI

摘要： A simple and sensitive colorimetric assay for the determination of atrazine in rice samples using cysteamine-gold nanoparticles (AuNPs) after solid phase extraction has been developed. The approach exploited the benefits of a robust sample pretreatment scheme with a rapid and sensitive colorimetric sensing strategy based on cysteamine-AuNPs. As a result of the hydrogen bonding between atrazine and cysteamine, cysteamine-AuNPs were induced to aggregate with an accompanying distinct color change from wine red to blue. The color change was monitored by UV-vis spectrophotometry or with the naked eye. The difference of the absorbance value at 523 nm was linearly related to the atrazine concentration over the range 0.033 to 6.67 mu g g(-1), and the limit of detection (S/N _ 3) was 0.0165 mu g g(-1). The spiked rice samples were extracted and purified using Oasis HLB cartridges and satisfactory recoveries (83.23-91.65%) were realized.

分类号： O65

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