嘧霉胺
谷胱甘肽
材料科学
选择性
检出限
表面等离子共振
核化学
纳米颗粒
分析化学(期刊)
纳米技术
色谱法
化学
有机化学
杀虫剂
催化作用
酶
生物
农学
作者
Si-yun Zhang,Ren Hu,Haibing Li
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2019-01-23
卷期号:30 (11): 115502-115502
被引量:4
标识
DOI:10.1088/1361-6528/aafb97
摘要
This work reports on glutathione modified Ag nanoparticles (GSH-Ag NPs) as a chemosensor for detecting pyrimethanil in an aqueous medium. The GSH-Ag NPs were expediently obtained by reducing AgNO3 with NaBH4 and modified with glutathione based on the Ag–S bond. The rapid discrimination for pyrimethanil from other pesticides exhibited the high selectivity of GSH-Ag NPs, then the selectivity was proved by 1H NMR, FT-IR and computational simulation. Based on the good properties of localized surface plasmon resonance, the selective recognition was transformed to visible optical signal in colorimetric test. Additionally the quantitative detection was achieved with good sensitivity and could be applied to analyze practical samples. The experimental results have shown a good linear relationship with pyrimethanil concentration ranging from 10 μM to 1 mM and a low detection limit of 3.87 μM.
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