| 大连市环境空气中PM_（2.5）含碳组分浓度特征研究 |
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| 引用本文： | 范慧君,纪德钰,李丹,苗书一,徐洁.大连市环境空气中PM_（2.5）含碳组分浓度特征研究[J].中国环境管理干部学院学报,2014(5):46-50. |
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| 作者姓名： | 范慧君 纪德钰 李丹 苗书一 徐洁 |
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| 作者单位： | 大连市环境监测中心; |
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| 摘 要： | 2013年9~12月对大连市环境空气中的PM2.5、有机碳和元素碳进行连续监测。研究结果表明,有机碳约占PM2.5质量的14.0%,元素碳约占6.9%,有机碳和元素碳的总质量约占PM2.5的21%。一半以上的天数有机碳与元素碳比值超过2.0,说明大连存在二次污染。有机碳与元素碳具有显著的正相关性,相关系数约为0.93,表明有机碳和元素碳可能有相同的污染来源。较大降水能有效降低PM2.5、有机碳和元素碳的浓度,风速与PM2.5、有机碳和元素碳的浓度呈负相关,雾霾天气时,有机碳和元素碳的浓度明显增加。
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| 关 键 词： | PM2.5 有机碳 元素碳 大连市 |
A Study on the Concentration Characteristics of Carbonaceous Matter in PM_（2.5） in Dalian Ambient Air |
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| Fan Huijun,Ji Deyu,Li Dan,Miao Shuyi,Xu Jie.A Study on the Concentration Characteristics of Carbonaceous Matter in PM_（2.5） in Dalian Ambient Air[J].Journal of Environmental Management College of China,2014(5):46-50. |
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| Authors: | Fan Huijun Ji Deyu Li Dan Miao Shuyi Xu Jie |
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| Institution: | ( Dalian Environmental Monitoring Center, Dalian Liaoning 116023, China) |
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| Abstract: | Fine particulate matter（PM2.5）, organic carbon（OC） and element carbon（ EC） in Dalian ambient air were monitored continuously from September to December, 2013. According to the analysis of monitoring data, it was concluded that the ratios of OC/PM2.5and EC/PM2.5are 14.0%and 6.9% separately. The total mass of OC and EC accounts for about 21% of PM2.5. The ratio of OC/EC is over 2.0 in over half days. That is to say secondary pollution exists in Dalian. OC has a significant positive correlation with EC and the correlation efficient is 0.93. OC and EC maybe have the same source. The heavy rainfall can reduce the concentrations of PM2.5, OC and EC effectively. Wind speed has a negative correlation with PM2.5, OC and EC. The concentrations of OC and EC increase obviously in the haze day. |
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| Keywords: | PM2 5 organic carbon element carbon Dalian |
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