CAJ | 학술논문

分析了广州地区2009年-2010年秋冬季节大气中PM2．5样品的水溶性离子、重金属元素、有机碳/元素碳（OC/EC）、多环芳烃质量浓度和粒径分布。初步掌握了广州地区秋冬季节大气中PM2．5的化学组分和特点，有机质（OM）是广州地区秋冬季PM2．5中最主要的成分，其次是硫酸根离子、硝酸根离子和铵根；PM2．5中有机碳和元素碳的空间分布特征相似，并受一次源排放影响；PM2．5中的重金属含量以铝、锌、铅相对较高，且城区高于城郊；PM2．5中17种多环芳烃、苯并（ a）芘（ BaP）的浓度均为城郊高于市区。
분석료엄주지구2009년-2010년추동계절대기중PM2．5양품적수용성리자、중금속원소、유궤탄/원소탄（OC/EC）、다배방경질량농도화립경분포。초보장악료엄주지구추동계절대기중PM2．5적화학조분화특점，유궤질（OM）시엄주지구추동계PM2．5중최주요적성분，기차시류산근리자、초산근리자화안근；PM2．5중유궤탄화원소탄적공간분포특정상사，병수일차원배방영향；PM2．5중적중금속함량이려、자、연상대교고，차성구고우성교；PM2．5중17충다배방경、분병（ a）비（ BaP）적농도균위성교고우시구。
Through examining water-soluble ions, heavy metal, OC/EC,polycyclic aromatic hydrocarbons concentration and particle size distribution of PM 2.5 in Guanghzou, sampled in the autumn and winter from 2009 to 2010, this paper presents the chemical composition and characteristics of PM 2.5 in the autumn and winter in Guangzhou.Followed by SO2-4 、NO3-and NH4+,organic matter(OM) was the main compoenent of PM2.5.OC and EC showed familar spatial distribution characters and both were affected by primary discharge .Aluminum , zinc and lead were the top 3 heavy metals in PM2.5 and urban showed higher comcentration than suburbw ,while Bap exhibited the opposite .