海洋光化学释放活性挥发性有机物的研究进展  

Research progress on the marine photochemical release of reactive volatile organic compounds

作　　者：张舒颖 李建龙 杜林 ZHANG Shu-ying;LI Jian-long;DU Lin(Qingdao Key Laboratory for Prevention and Control of Atmospheric Pollution in Coastal Cities,Environment Research Institute,Shandong University,Qingdao 266237,China)

机构地区：[1]山东大学环境研究院,青岛市沿海城市大气污染防治重点实验室,山东青岛266237

出　　处：《中国环境科学》2025年第4期1777-1788,共12页China Environmental Science

基　　金：国家自然科学基金项目(42476033,42006044)。

摘　　要：挥发性有机物(VOCs)释放对大气氧化平衡和二次有机气溶胶(SOA)生成具有重要贡献,从而对全球气候产生影响.海洋中的甲烷、非甲烷烃、二甲基硫、卤代烃等活性物质也是VOCs的重要组成部分,其主要是由海洋生物和非生物过程产生.截至目前,关于海洋VOCs的源-汇过程以及其对影响因素响应机制已做了大量研究,但重点多聚焦于海洋生物过程却忽视了海洋(微)表层溶解有机质(DOM)光化学过程的贡献,从而导致其释放可能被低估.近年来针对海洋光化学,特别是微表层DOM光化学过程的研究备受关注,本综述系统描述了海洋VOCs的来源与释放通量的研究进展,重点围绕海洋DOM光化学过程的VOCs产生机理和对环境因素的响应,以及其对气候变化的影响三个方面展开,并从技术创新、机制揭示和环境评价的角度对未来的重点关注领域进行了展望.指出未来应加强海洋微表层DOM光化学过程的长期观测与模拟研究,以期揭示海洋VOCs的光化学产生与贡献对人类活动的响应以及对气候变化的影响.The emission of volatile organic compounds(VOCs)significantly contributes to the atmospheric oxidative balance and secondary organic aerosol(SOA)formation,thereby influencing global climate.Reactive substances such as methane,non-methane hydrocarbons,dimethyl sulfide,and halocarbons in the ocean are important components of VOCs,primarily produced through biological and non-biological processes.To date,substantial research has been conducted on the source-sink processes of marine VOCs and their response mechanisms to environmental factors.However,much of this research has focused on biological processes,overlooking the contributions of photochemical processes involving dissolved organic matter(DOM)in the sea surface(micro)layer,which may result in an underestimation of their emissions.In recent years,marine photochemistry,particularly the photochemical processes of DOM in the sea surface micro-layer,has gained increasing attention.This review systematically examines the research progress on the sources and emission fluxes of marine VOCs,with a focus on the mechanisms of VOCs production via DOM photochemistry,their response to environmental factors,and their implications for climate change.Furthermore,future research directions are proposed from the perspectives of technological innovation,mechanism exploration,and environmental assessment.Long-term observation and simulation studies of photochemical processes of DOM in the sea surface micro-layer are highlighted as crucial for revealing the response of marine VOCs photochemical production to human activities and its impact on climate change.

关 键 词：挥发性有机物 海洋光化学 影响因素 释放通量 环境效应 

分 类 号：X142[环境科学与工程—环境科学] P743[天文地球—海洋科学]