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| 粤北韶关市冬季大气颗粒物中多环芳烃的粒径分布特征 |
| Particle Size Distribution of Polycyclic Aromatic Hydrocarbons( PAHs ) in Winter of Shaoguan,Northern Guangdong Province,China |
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| DOI： |
| 中文关键词: 多环芳烃 粒径分布 气溶胶 韶关 |
| 英文关键词: PAHs Size distribution Aerosols Shaoguan |
| 基金项目:广东省自然科学基金资助项目(S2011040000939)；中国科学院广州地球化学研究所有机地球化学国家重点实验室开放基金资助项目（OGL-201111） |
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| 摘要点击次数: 1943 |
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| 中文摘要: |
| 2012年12月4日—11日，使用微孔均匀撞击式采样器(MOUDI)连续7 d采集广东省韶关市3个环境空气监测点气溶胶样品，采用GC/MS测定包括美国国家环保局（USEPA）优控多环芳烃（Σ16PAHs）在内的17种PAHs的浓度水平，并分析Σ16PAHs的粒径分布特征和来源。结果表明：韶关市冬季气溶胶颗粒中Σ16PAHs的质量浓度为17.29 ng/m3～23.97 ng/m3；Σ16PAHs集中在1.0 μm～3.2 μm的积聚态和粗颗粒中，呈单峰分布特征；比值参数分析显示，韶关市大气颗粒物中PAHs主要来自燃煤和汽车尾气的排放。 |
| 英文摘要: |
| The aerosol particles in Shaoguan,Guangdong Province of China， were collected by a micro orifice uniform deposit impactor (MOUDI) for one week in winter period (from 4th to 11th December,2012).The samples were analyzed for 17 PAHs including the presence of 16 PAHs in the USEPA priority controlled list by gas chromatography with mass spectrometry(GC MS).The results showed that the concentration of total PAHs (Σ16PAHs) in aerosol particles range from 17.29 ng/m3 to 23.97 ng/m3.The distributions of Σ16PAHs were unimodal with a peak in the 1.0 μm～3.2 μm.The PAHs ratio showed that PAHs derived from coal combustion and diesel vehicle emissions. |
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