典型文献
Nitrogenous and carbonaceous aerosols in PM2.5 and TSP during pre-monsoon:Characteristics and sources in the highly polluted mountain valley
文献摘要：
This study reports for the first time a comprehensive analysis of nitrogenous and carbona-ceous aerosols in simultaneously collected PM2.5 and TSP during pre-monsoon(March-May 2018)from a highly polluted urban Kathmandu Valley(KV)of the Himalayan foothills.The mean mass concentration of PM2.5(129.8 μg/mn3)was only-25％of TSP mass(558.7 μg/m3)indicating the dominance of coarser mode aerosols.However,the mean concentration as well as fractional contributions of water-soluble total nitrogen(WSTN)and carbonaceous species reveal their predominance in find-mode aerosols.The mean mass concentration of WSTN was 17.43±4.70 μg/m3(14％)in PM2.5 and 24.64±8.07 μg/m3(5％)in TSP.Moreover,the fractional contribution of total carbonaceous aerosols(TCA)is much higher in PM2.5(～34％)than that in TSP(～20％).The relatively low OC/EC ratio in PM2.5(3.03±1.47)and TSP(4.64±1.73)suggests fossil fuel combustion as the major sources of carbonaceous aerosols with contributions from secondary organic aerosols.Five-day air mass back trajectories sim-ulated with the HYSPLIT model,together with MODIS fire counts indicate the influence of local emissions as well as transported pollutants from the Indo-Gangetic Plain region to the south of the Himalayan foothills.Principal component analysis(PCA)also suggests a mixed contribution from other local anthropogenic,biomass burning,and crustal sources.Our re-sults highlight that it is necessary to control local emissions as well as regional transport while designing mitigation measures to reduce the KV's air pollution.
文献关键词：
中图分类号：
作者姓名：
Hemraj Bhattarai;Lekhendra Tripathee;Shichang Kang;Pengfei Chen;Chhatra Mani Sharma;Kirpa Ram;Junming Guo;Maheswar Rupakheti
作者机构：
Earth System Science Programme and Graduate Division of Earth and Atmospheric Sciences,The Chinese University of Hong Kong,Hong Kong,China;Himalayan Environment Research Institute(HERI),Kathmandu 44602,Nepal;State Key Laboratory of Cryospheric Science,Northwest Institute of Eco-environment and Resources,Chinese Academy of Sciences(CAS),Lanzhou 730000,China;Key Laboratory of Tibetan Environment Changes and Land Surface Processes,Institute of Tibetan Plateau Research,CAS,Beijing 100101,China;CAS Center for Excellence in Tibetan Plateau Earth Sciences,Beijing 100085,China;Central Department of Environmental Sciences,Tribhuvan University,Kathmandu 44613,Nepal;Institute of Environment and Sustainable Development,Banaras Hindu University,Varanasi 221005,India;Instituteffor Advanced Sustainability Studies,Potsdam 14467,Germany
文献出处：
引用格式：
[1]Hemraj Bhattarai;Lekhendra Tripathee;Shichang Kang;Pengfei Chen;Chhatra Mani Sharma;Kirpa Ram;Junming Guo;Maheswar Rupakheti-.Nitrogenous and carbonaceous aerosols in PM2.5 and TSP during pre-monsoon:Characteristics and sources in the highly polluted mountain valley)[J].环境科学学报（英文版）,2022(05):10-24
A类：
Nitrogenous,carbona,ceous,mn3
B类：
carbonaceous,aerosols,PM2,TSP,during,monsoon,Characteristics,sources,highly,polluted,mountain,valley,This,study,reports,first,comprehensive,analysis,nitrogenous,simultaneously,collected,March,May,from,urban,Kathmandu,Valley,KV,Himalayan,foothills,mean,concentration,was,only,indicating,coarser,However,well,fractional,contributions,water,soluble,total,WSTN,species,reveal,their,predominance,find,Moreover,TCA,much,higher,than,that,relatively,low,OC,EC,suggests,fossil,fuel,combustion,major,secondary,organic,Five,day,air,back,trajectories,ulated,HYSPLIT,model,together,MODIS,fire,counts,indicate,influence,local,emissions,transported,pollutants,Indo,Gangetic,Plain,south,Principal,component,also,mixed,other,anthropogenic,biomass,burning,crustal,Our,sults,highlight,necessary,control,regional,while,designing,mitigation,measures,reduce,pollution
AB值：
0.519754
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