| 南京地区大气PM1.1中OC、EC特征及来源解析 |
| 摘要点击 3861 全文点击 1677 投稿时间：2014-08-04 修订日期：2014-10-16 |
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| 中文关键词 南京地区 PM1.1 有机碳 元素碳 来源解析 |
| 英文关键词 Nanjing PM1.1 OC EC source apportionment |
| 作者 | 单位 | E-mail | | 姜文娟 | 南京信息工程大学环境科学与工程学院, 南京 210044
南京信息工程大学大气环境与装备技术协同创新中心, 南京 210044 | jiangfavor@qq.com | | 郭照冰 | 南京信息工程大学环境科学与工程学院, 南京 210044
南京信息工程大学大气环境与装备技术协同创新中心, 南京 210044 | guocumt@nuist.edu.cn | | 刘凤玲 | 南京信息工程大学环境科学与工程学院, 南京 210044
南京信息工程大学大气环境与装备技术协同创新中心, 南京 210044 | | | 芮茂凌 | 南京信息工程大学环境科学与工程学院, 南京 210044
南京信息工程大学大气环境与装备技术协同创新中心, 南京 210044 | | | 石磊 | 南京信息工程大学环境科学与工程学院, 南京 210044
南京信息工程大学大气环境与装备技术协同创新中心, 南京 210044 | | | 曾钢 | 南京信息工程大学环境科学与工程学院, 南京 210044
南京信息工程大学大气环境与装备技术协同创新中心, 南京 210044 | | | 郭子研 | 南京信息工程大学大气环境与装备技术协同创新中心, 南京 210044 | |
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| 中文摘要 |
| 采用DRI Model 2001A热/光碳分析仪测定了2011年南京地区大气PM1.1中OC、EC的含量,并具体探讨了其来源. 结果表明,南师OC、EC年均浓度分别为10.10 μg·m-3、2.52 μg·m-3,南化分别为11.22 μg·m-3、3.12 μg·m-3,南化污染相对严重. 夏季两地OC、EC含量较低,而冬春季较高,这与冬春季燃煤量增加,并且受内陆西风及逆温的影响,污染物集中在南京市上空不易扩散有关. 两地PM1.1中SOC/TOC均在夏季较高,冬季最低. 秋季SOC和O3有较好的相关性,表明秋季光化学反应是SOC的重要生成途径. |
| 英文摘要 |
| The concentrations of OC and EC in PM1.1 collected from Nanshi (NS) and Nanhua (NH) in 2011 were analyzed using DRI Model 2001A Thermal Optical Carbon Analyzer. In addition, source apportionment was simultaneously evaluated. The results showed that the annual average concentrations of OC and EC in PM1.1 were 10.10 μg·m-3 and 2.52 μg·m-3 in NS area, and 11.22 μg·m-3 and 3.12 μg·m-3 in NH area, respectively. This result indicated that OC and EC pollution in NH was more serious than that in NS area. Meanwhile, the concentrations of OC and EC in winter and spring were obviously higher compared to those in summer in these two sampling sites, which was mainly ascribed to the increased coal combustion and the unfavorable emission condition of air pollutants in summer and spring. We noted that the SOC/TOC value was the highest in summer and the lowest in winter. In addition, the SOC concentration was observed to show a positive correlation with ozone concentrations, which indicated that the photochemical reaction was a main way of SOC formation in autumn. |
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