Composition, source, mass closure of PM_(2.5) aerosols for four forests in eastern China

查看全文 作　　者：Li [1,2]Li;Wu [1]Wang;Jialiang [1]Feng;Dongping [1]Zhang;Huaijian [1]Li;Zeping [1]Gu;Bangjin [1]Wang;Guoying [1,3]Sheng;Jiamo [1,3]Fu

机构地区：[1]Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.;[2]College of Resources and Environment, Sichuan Agricultural University, Ya'an 625014, China;[3]State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China

出　　处：《Journal of Environmental Sciences》索引2010年第22卷第3期,共8页

基　　金：supported by the National Natrual Science Foundation of China (No. 20677036, 20877051);the Shanghai Leading Academic Disciplines (No. S30109);the Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry;supported by the Graduate Innovative Fund from Shanghai University 摘　　要：PM2.5 aerosols were collected in forests along north latitude in boreal-temperate, temperate, subtropical and tropical climatic zones in eastern China, i.e., Changbai Mountain Nature Reserve (CB), Dongping National Forest Park in Chongming Island (CM), Dinghu Mountain Nature Reserve (DH), Jianfengling Nature Reserve in Hainan Island (HN). The mass concentrations of PM2.5, organic carbon (OC), elemental carbon (EC), water soluble organic carbon (WSOC) as well as concentrations of ten inorganic ions (F-, Cl-, NO3-, SO42-, C2O42-, NH4+, Na+, K+, Ca2+, Mg2+) were determined. Aerosol chemical mass closures were achieved. The 24-hr average concentrations of PM2.5 were 38.8, 89.2, 30.4, 18 μg/m3 at CB, CM, DH and HN, respectively. Organic matter and EC accounted for 21%-33% and 1.3%-2.3% of PM2.5 mass, respectively. The sum of three dominant secondary ions (SO42-, NO3-, NH4+) accounted for 44%, 50%, 45% and 16% of local PM2.5 mass at CB, CM, DH and HN, respectively. WSOC comprised 35%-65% of OC. The sources of PM2.5 include especially important regional anthropogenic pollutions at Chinese forest areas. 关键词：国家森林公园 PM2.5 质量浓度中国东部气溶胶长白山自然保护区可溶性有机碳水溶性有机碳

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Composition, source, mass closure of PM_(2.5) aerosols for four forests in eastern China

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