摘要
水体受石油污染日趋广泛,给人类及生态环境带来严重威胁。快速、准确和可靠地监测水体石油污染状况,对于理解其环境行为和评估人体暴露风险至关重要。石油类组分往往具备较好的光谱响应,然而基于光谱技术快速监测实际石油烃污染水体却鲜有报道。该研究以典型石油污染场地的地下水和地表水为对象,在全面分析水质电导率、总有机碳,Cl^(-),NO_(3)^(-),SO_(4)^(2-),Na^(+),K^(+),Mg^(2+),Ca^(2+),NH_(4)^(+),挥发性有机物和石油烃C_(6)-C_(9),C_(10)-C_(14),C_(15)-C_(28),C_(29)-C_(40)浓度基础上,对水体样品进行紫外-可见光光谱、同步荧光光谱、三维荧光光谱表征,采用多元数据分析手段评估光谱技术在石油污染场地快速识别应用的可能性。结果表明:①紫外-可见光光谱和同步荧光光谱参数表明,污染的地下水中含有大量芳香族化合物,且有机物分子结构复杂,含有大量的羟基、羰基、羧基和酯类等取代基,三维荧光光谱参数表明污染水体中有机物经过了长时间的生物转化,说明污染地下水中有机物稳定性强,降解性差;②三维荧光光谱图表现出Ⅰ和Ⅳ区明显的荧光峰,Ⅴ区存在肩峰的水体主要是苯系物污染,而三维荧光光谱图表现出Ⅱ和Ⅳ区明显的荧光峰,Ⅰ区存在肩峰的水体主要是萘系物污染,三维荧光光谱图表现出Ⅱ区最高荧光峰,Ⅰ,Ⅲ,Ⅳ和Ⅴ都存在肩峰的水体主要是萘系物和菲系物污染;③石油烃C_(6)-C_(9)组分浓度可采用紫外-可见光光谱参数S_(308~363),SUVA_(254)和三维荧光光谱中Ⅰ区体积快速指示,石油烃C_(10)-C_(14)组分和总石油烃(TPH)浓度可采用三维荧光光谱中Ⅳ区体积快速指示,石油烃C_(15)-C_(28)和C_(29)-C_(40)组分浓度可采用三维荧光光谱中Ⅰ区体积快速指示。研究证实利用光谱参数结合多元数据分析可对石油污染水体进行快速识别,为地下水石油污染监测和修复提供了一�
Oil-polluted water is becoming more and more widespread,which poses a serious threat to the human and ecological environment.Rapid,accurate and reliable monitoring of oil pollution in water is essential for understanding its environmental behavior and assessing human exposure risk.Petroleum components often have better spectral responses,but there are few reports on the rapid monitoring of water contaminated by petroleum hydrocarbons based on spectral technology.This study focuses on the groundwater and surface water of a typical petroleum-contaminated site.Use standard methods to obtain sample conductivity,total organic carbon and Cl^(-),NO_(3)^(-),SO_(4)^(2-),Na^(+),K^(+),Mg^(2+),Ca^(2+),NH_(4)^(+),volatile organic compounds and petroleum hydrocarbons C_(6)-C_(9),C_(10)-C_(14),C_(15)-C_(28),C_(29)-C_(40) concentration,and the samples were characterized by ultraviolet-visible spectroscopy,synchronous fluorescence spectroscopy and three-dimensional fluorescence spectroscopy,and use multivariate data analysis methods to evaluate the possibility of rapid identification and application of spectroscopy technology in petroleum contaminated sites.The results showed that:(1)Ultraviolet-visible parameters and synchronous fluorescence parameters indicate that the molecular structure of organic substances in contaminated submerged water is complex,contains a large number of aromatic compounds and contains a large number of substituents such as hydroxyl,carbonyl,carboxyl and esters on the organic substances.Three-dimensional fluorescence parameters indicate that the organic substances in contaminated submerged water have undergone a long period of biological transformation,indicating that the organic substances in contaminated submerged water have strong stability and poor.(2)The three-dimensional fluorescence spectra of samples contaminated by benzene series showed obvious fluorescence peaks in areas Ⅰ and Ⅳ,and shoulder peaks in area Ⅴ.The three-dimensional fluorescence spectra of samples contaminated mainly by naph
作者
马妍
赵航正
虞敏达
崔骏
单光春
郑一鸣
张亚茹
何小松
MA Yan;ZHAO Hang-zheng;YU Min-da;CUI Jun;SHAN Guang-chun;ZHENG Yi-ming;ZHANG Ya-ru;HE Xiao-song(School of Chemistry&Environmental Engineering,China University of Mining&Technology(Beijing),Beijing 100083,China;State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution,Chinese Research Academy of Environmental Sciences,Beijing 100012,China)
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2021年第3期822-827,共6页
Spectroscopy and Spectral Analysis
基金
国家重点研发计划项目(2018YFC1800703)
国家自然科学基金青年基金项目(41701353)
中国矿业大学(北京)越崎青年学者资助计划项目(2019QN09)资助。
关键词
石油烃
地下水
地表水
光谱参数特征
多元线性回归
Petroleum hydrocarbons
Groundwater
Surface water
Spectral parameter characteristics
Multiple linear regression
