A facile and label-free SERS approach for inspection of fipronil in chicken eggs using SiO2@Au core/shell nanoparticles
A facile and label-free SERS approach for inspection of fipronil in chicken eggs using SiO2@Au core/shell nanoparticles
复制标题
一种使用 SiO2@Au 核/壳纳米颗粒检测鸡蛋中氟虫腈的简便且无标记的 SERS 方法
DOI：
10.1016/j.talanta.2019.120324
复制
发表时间：
2020-01-15
期刊：
影响因子：
6.1
通讯作者：
Huang, Qing
中科院分区：
文献类型：
--
作者：
Muhammad, Muhammad;Yao, Guohua;Huang, Qing
氟虫腈是一种苯基吡唑杀虫剂，常用于农业和住宅应用。本文报道了一种新的无标记表面增强拉曼光谱（Sers）检测鸡蛋中氟虫腈残留的方法。我们制备了由SiO2@Au核/壳纳米颗粒组成的Sers基底，并探测了鸡蛋膜上氟虫腈残留的污染。利用密度泛函理论（DFT）计算确定了氟虫腈的特征拉曼谱带，从而实现了对痕量氟虫腈的定量分析。因此，这项工作可能提供一个实用的解决方案，快速检测鸡蛋或其他食品中的氟虫腈污染。
Fipronil is a phenylpyrazole insecticide commonly used in agriculture and residential applications. In this paper, we reported a novel label-free surface-enhanced Raman spectroscopy (SERS) method for detection of fipronil residues in chicken eggs (mostly accumulated on the egg membrane). We fabricated the SERS substrates composed of the SiO2@Au core/shell nanoparticles and probed the contamination of fipronil residue on the egg membrane. The identification of the characteristic Raman bands of fipronil was achieved with the aid of density functional theory (DFT) calculation, with which we could analyzed the trace amount of fipronil in a quantitative way. As such, this work may provide a practical solution to quick inspection of fipronil contamination in chicken eggs or other foods.