基于激光拉曼光谱的水面油膜厚度测量方法研究  

The Study of Oil Film Thickness Measurement on Water Surface Based on Laser Raman Spectroscopy

作　　者：蔡宗岐[1] 冯巍巍[1,2] 王传远 CAI Zong-qi;FENG Wei- wei;WANG Chuan- yuan(Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Coastal Environment Engineering Technology Research Center, Yantai 264003, China;University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院烟台海岸带研究所海岸带环境工程技术研究中心,山东烟台264003 [2]中国科学院大学,北京100049

出　　处：《光谱学与光谱分析》2018年第6期1661-1664,共4页Spectroscopy and Spectral Analysis

基　　金：国家重点研发计划项目(2016YFC1400600-1);烟台市重点研发计划项目(2016ZH071);中国科学院关键技术人才项目([2016]65);中国科学院战略先导科技专项(XDA11020305)资助

摘　　要：为了实现水体表面油膜厚度的快速非接触检测,基于激光拉曼光谱检测技术,搭建了水体表面油膜厚度拉曼光谱检测系统。以532nm激光作为激发光源,以常见的柴油和汽油为例研究了不同油品的拉曼光谱特性,研究结果表明,油膜拉曼光谱响应特性与油品密切相关,相同油膜厚度情况下不同油品的拉曼光谱曲线有明显的差异,97~#汽油在1 651cm^(-1)光谱强度要高于90~#汽油。随着油膜厚度的增加,柴油316和1 451cm^(-1)光谱强度和汽油1 651cm^(-1)拉曼位移光谱强度增加,油拉曼光谱信号变强;根据油水界面拉曼光谱特征,设计了油膜厚度计算因子,实验证明随着油膜厚度增加,油膜厚度计算因子r_(film)呈下降趋势。可以将油膜厚度计算因子作为水体表面油膜厚度测量的一种依据。In order to realize the fast and non-contact detection of oil film thickness on water surface,a system based on laser Raman spectroscopy technologywas introduced in this paper.The 532nm laser was used as the exciting source,and the result shows there is obvious difference between the Raman spectra of diesel and gasoline on water surfacewhich have the same oil film thickness,the spectral intensity of 97#gasoline is stronger than that of 90#gasoline at 1 651cm-1.With the increase of oil film thickness,the spectral intensities of 316,1 451and 1 651cm-1are enhanced,the calculation factor r（film） of oil film thickness shows a decreasing trend.The experiment result shows that the Raman spectroscopy can be used as a reference for oil film thickness inthe application.

关 键 词：拉曼光谱 油膜厚度 水环境监测 

分 类 号：X132[环境科学与工程—环境科学]