文献类型：期刊文献

英文题名：Rapid In Situ SERS Analysis of Pesticide Residues on Plant Surfaces Based on Micelle Extraction of Targets and Stabilization of Ag Nanoparticle Aggregates

作者：Kang, Yan[1,2];Li, Long[1,2];Chen, Wanchao[1,2];Zhang, Feiyu[1,2];Du, Yiping[1,2];Wu, Ting[1,2]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Res Ctr Anal & Test, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：11

期号：11

起止页码：3161

外文期刊名：FOOD ANALYTICAL METHODS

收录：;EI(收录号：20182205265601);WOS:【SCI-EXPANDED(收录号:WOS:000445889900019)】；

基金：This study was funded by the Science and Technology Commission of Shanghai Municipality (No. 17142202600) and Fundamental Research Funds for the Central Universities (No. 222201714047).

语种：英文

外文关键词：Polyurethane micelle; Ag nanoparticles; In situ; Pesticides

摘要：A structure of polyurethane micelle/Ag nanoparticle (Ag NP) cluster was fabricated as surface-enhanced Raman scattering (SERS) substrate for in situ extracting organic compounds on the surface of different matrixes, in which polyurethane micelles acted as the host material to capture target molecules and stabilize nanoparticle cluster. This method provided stable aqueous suspensions of Ag NP cluster due to the amphiphilic properties of polyurethane. We demonstrated SERS-based in situ detection of pesticides on vegetables and fruit skin, by simply dropping polyurethane micelle/Ag NPs substrate on the sample surface where the target molecules could be detected without a previous elution and extracting. The obtained results showed that this polyurethane micelle/Ag NP cluster substrate had excellent SERS performance for pesticide molecules with ideal stability and reproducibility. With further optimization, the limit of detection of 0.03g/mL acetamiprid, 0.08g/mL phosmet, and 0.002g/mL thiabendazole was obtained, respectively.