表面增强拉曼光谱法检测油中甲醇

Detection of Methanol in Oil by Surface-enhanced Raman Spectroscopy

本文仿真计算了甲醇分子的拉曼光谱及其于银原子构成的表面增强拉曼光谱,同时制备了一种置换获得的铜膜表面银纳米基底,用于有效检测变压器油中溶解甲醇含量。基于此表面增强基底,我们在浓度为1 mL/L的甲醇-变压器油溶液中原位检测到甲醇的拉曼信号,此拉曼信号位置位于1032 cm^-1处。本文的研究为今后进行更低浓度的油中溶解微量甲醇原位检测及定量分析提供参考。

In this work,the methanol molecule spectrum and the methanol-Ag1 surface-enhanced Raman spectrum were simulated.And a SERS substrate of silver NPs on copper surface was prepared by substitution reaction to detect the concentration of methanol dissolved in transformer oil.Based on this SERS substrate,we effectively detected the Raman signal of methanol in 1 mL/L methanol-oil solution,and the wavenumber of this Raman signal is at 1032 cm^-1.Our study provides reference for further study on in situ detection and quantitative analysis of methanol in transformer oil.