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| 淮南市PM2.5中PAHs污染特征及来源分析 |
| Characteristics and Source Identification of Polycyclic Aromatic Hydrocarbons （PAHs） in PM2.5 in Huainan City |
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| DOI： |
| 中文关键词: 多环芳烃 污染特征 来源分析 PM2.5 淮南 |
| 英文关键词: PAHs Pollution characteristics Source identification PM2.5 Huainan |
| 基金项目:国家自然科学基金资助项目（41373108）；安徽省国土资源科技基金资助项目（2013-K-07）；淮北矿业（集团）科技攻关基金资助项目（2014-HBKJ-01）；煤矿生态环境保护国家工程实验室科技攻关基金资助项目（HNKY-JT-JS2013-41） |
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| 中文摘要: |
| 通过采集淮南市6个功能区四季的PM2.5样品，运用GC-MS仪测定样品中PAHs含量并分析其主要来源。结果表明：该市PM2.5中PAHs质量浓度年均值为31.06 ng/m3，呈现冬季污染程度最重，夏季最轻，采矿区＞商业区＞工业区＞文教区＞居民区＞对照区的特征；夏季PAHs以3环和4环为主，春、秋、冬季以4环、5环和6环为主；6个功能区均以4环PAHs为主；PAHs主要来源为煤燃烧、机动车尾气排放、生物质燃烧及焦炉挥发，其中燃煤和机动车尾气污染贡献最大 |
| 英文摘要: |
| PM2.5 samples were collected during four seasons in six functional zones of Huainan, and 16 PAHs were analyzed by GC MS. The results showed that the annual average concentration of the total PAHs (ΣPAHs) was 31.06 ng/m3. The distribution of PAHs in each season was that PAHs pollution was the most serious in winter and slightest in summer. In each functional zone, PAHs pollution presented a trend of mining areas＞commercial areas＞industrial areas＞educational areas＞residential areas＞contrast areas. The percentages of 3 ring and 4 ring PAHs were highest in summer whereas 4 ring to 6 ring PAHs were the main in other seasons. Additionally, the main PAHs were 4 ring in all of the functional zones. Principal component analysis suggested that PAHs were mainly influenced by vehicle emissions, coal and biomass combustion and coking, among which vehicle emissions and coal combustion were the two primary contributors. |
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