• 文献标题:   Rapid Determination of Thiram Residues in Fruit Juice by surface-enhanced Raman Scattering Coupled with a Gold@Silver nanoparticle-graphene Oxide Composite
  • 文献类型:   Article
  • 作  者:   SONG YY, ZHANG YY, HUANG YQ, FAN YX, LAI KQ
  • 作者关键词:   graphene oxide, juice, nanoparticle, pesticide, surfaceenhanced raman spectroscopy sers
  • 出版物名称:   ANALYTICAL LETTERS
  • ISSN:   0003-2719 EI 1532-236X
  • 通讯作者地址:   Shanghai Ocean Univ
  • 被引频次:   1
  • DOI:   10.1080/00032719.2019.1691220 EA NOV 2019
  • 出版年:   2020

▎ 摘  要

With the large-scale use of pesticides, food safety issues caused by their residues have been drawn increasing concern. In this study, surface-enhanced Raman spectroscopy (SERS) coupled with a Au@Ag nanoparticle (NP)-graphene oxide (GO) composite substrate which was synthesized by a simple self-assembly method was applied for the rapid determination of thiram residues in fruit juice. To obtain high SERS activity, the loading and the aggregation of Au@Ag NP on the graphene oxide sheets were adjusted by controlling the size of Au@Ag nanoparticle and the concentration of graphene oxide in solution. Using the optimal conditions, the limit of detection for thiram standard solution was 6.3 ng/mL, while the limits of detection for thiram in apple juice and grape juice without any pretreatment were 36.7 and 134.4 ng/mL, respectively. The entire analytical process required less than 20 min. The results indicated that SERS technology coupled with Au@Ag nanoparticle graphene oxide composite substrate was a simple, rapid, and sensitive approach for the determination of pesticide residues in fruit juice.