Biogenic emission as a potential source of atmospheric aromatic hydrocarbons:Insights from a cyanobacterial bloom-occurring eutrophic lake  

作　　者：Hua Fang Ting Wu Shutan Ma Yuqing Miao Xinming Wang 

机构地区：[1]School of Ecology and Environment,Anhui Normal University,Wuhu 241000,China [2]Center of Cooperative Innovation for Recovery and Reconstruction of Degraded Ecosystem in Wanjiang City Belt,Wuhu 241000,China [3]School of Geography and Tourism,Anhui Normal University,Wuhu 241000,China [4]State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China [5]CAS Center for Excellence in Deep Earth Science,Guangzhou 510640,China

出　　处：《Journal of Environmental Sciences》2025年第5期497-504,共8页环境科学学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.42207128 and 41273095);the Natural Science Foundation of Anhui Province(No.2008085MD111);the Key Research Projects of Natural Science in Colleges and Universities of Anhui Province(No.KJ2021A0091).

摘　　要：As important precursors of ozone(O_(3))and secondary organic aerosol(SOA),reactive aromatic hydrocarbons(AHs)have typically been classified as anthropogenic air pollutants.However,biogenic emission can also be a potential source of atmospheric AHs.Herein,field observations in a eutrophic lake were combined with laboratory incubation experiments to investigate the biogenic AH emission.Field work showed that the water-air fluxes of AHs measured at sites with high cyanobacteria abundance could reach an order of magnitude greater than those at sites with low cyanobacteria abundance,suggesting that cyanobacteria could be the important contributor to measured AHs.Laboratory incubation experiments further confirmed the AH emission of cyanobacteria and revealed that the emission could change significantly over the lifespan of cyanobacteria and varied to their growing conditions.By combining field observations and laboratory incubation experiments,it has been suggested that the emission of different AH species from cyanobacteria could be modulated by variable biogeochemical mechanisms and that the biochemical process of toluene could be different from that of other AHs.This study investigates AH emissions from inland aquatic ecosystem and suggests that biogenic emission could be a potential source of atmospheric AHs.

关 键 词：Aromatic hydrocarbons Biogenic emission Eutrophic lake CYANOBACTERIA Biosphere-atmosphere exchange 

分 类 号：X592[环境科学与工程—环境工程]