文献类型：期刊文献

英文题名：A self-referenced method for determination of patulin by surface-enhanced Raman scattering using gold nanobipyramids as the substrate

作者：Kang, Yan[1];Gu, Hai-Xin[2];Zhang, Xin[3]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Res Ctr Anal & Test, Shanghai 200237, Peoples R China;[2]Shanghai Fire Res Inst MEM, 918 Minjing Rd, Shanghai 200438, Peoples R China;[3]Natl Evaluat Ctr Toxicol Fertil Regulating Drugs, Shanghai Inst Planned Parenthood Res, 2140 Xie Tu Rd, Shanghai 200032, Peoples R China

年份：2019

卷号：11

期号：40

起止页码：5142

外文期刊名：ANALYTICAL METHODS

收录：;EI(收录号：20194307584412);WOS:【SCI-EXPANDED(收录号:WOS:000490746700007)】；

基金：This work was sponsored by the Science and Technology Commission of Shanghai Municipality (No. 17142202600), Natural Science Foundation of Shanghai (18ZR1408100), Project of Shanghai Science and Technology Commission (19DZ2290600) and Scientific Research Program of Fire Rescue Bureau of MEM (2019XFGG04). Yan Kang has received research grants from the Science and Technology Commission of Shanghai Municipality. Hai-Xin Gu has received research grants from the Natural Science Foundation of Shanghai and Project of Shanghai Science and Technology Commission.

语种：英文

外文关键词：Surface scattering - Gold - Raman spectroscopy - Raman scattering - Solutions

摘要：A novel surface-enhanced Raman scattering (SERS) probe was developed for the selective determination of patulin using gold nanobipyramids as the SERS substrate. Patulin undergoes a selective chemical reaction with sulfhydryl groups of 4-mercaptobenzoic acid (4-MBA) to form new compounds. A substantial change of the SERS spectrum of 4-MBA was observed and a new peak at 1641 cm(-1) appeared. A significant increase in the intensity of the SERS signal at 1641 cm(-1) was observed upon addition of more targets. This feature was exploited for sensitive quantification of patulin in aqueous solution by ratioing the intensities of the new peak at 1641 cm(-1) and the peak of 4-MBA at 1586 cm(-1). This method displayed excellent selectivity for patulin. Under optimal conditions, the ratioed signal intensity is related to the concentration of patulin in the range between 10 mu g L-1 and 3000 mu g L-1, with a detection limit of 6 mu g L-1. This method was successfully used for the determination of patulin in juice.