江北新区冬季不同功能区元素碳和有机碳的源排放特征  

Characteristics of Organic Carbon and Elemental Carbon Emission Sources of Different Function Areas in Jiangbei New District during Winter

作　　者：曹琪敏 邹嘉南 安俊琳[1] 张玮航[1] 施见秋 戴明明[1] 周鸿飞[1] 赵延岩 

机构地区：[1]南京信息工程大学气象灾害教育部重点实验室气候与环境变化国际合作联合实验室气象灾害预报预警与评估协同创新中心中国气象局气溶胶与云降水重点开放实验室,江苏南京210044

出　　处：《环境科学与技术》2017年第4期85-91,共7页Environmental Science & Technology

基　　金：国家自然基金资助项目(41305135);中国科学院战略性先导科技专项(B类)(XDB05020206);南京信息工程大学大气物理学院天诺基业大学生科创基金(2015TNJY003)

摘　　要：2016年1月8-22日,利用PM_(2.5)中流量膜采样器和Model 2001A热/光碳分析仪对南京江北新区内不同功能区的元素碳(EC)和有机碳(OC)进行了采样分析,对比了不同功能区的碳质气溶胶的源排放特征。结果表明:农业区、水路交通区、商业区、公路交通区、工业区的EC和OC平均浓度分别为(4.1±2.7)和(16.1±6.4)μg/m^3、(3.5±2.7)和(12.3±5.9)μg/m^3、(2.8±1.2)和(13.6±3.5)μg/m^3、(3.7±1.6)和(12.9±2.6)μg/m^3、(4.5±2.1)和(12.7±4.0)μg/m^3。其中,OC、SOC在农业区的浓度最大,为(16.1±6.4)、(4.9±3.3)μg/m^3,说明农业排放源对于有机碳,特别是二次有机碳的贡献较大;而EC、POC在工业区的浓度最大,为(4.5±2.1)、(11.0±5.0)μg/m^3,说明工业排放源对于元素碳和一次有机碳的贡献值较大。其中,OC1在商业区,OC2在公路交通区,OC3和OC4在工业区,EC1在水路和公路交通区,EC2和EC3在水路、公路和商业区均出现较大值。观测期间出现的2次污染事件中,EC浓度的增长速度要明显快于OC的浓度。In quest of the characteristics of carbonaceous aerosol sources in different functional areas of Jiangbei New District, Nanjing City, an investigation was carried out, in which elemental carbon（EC） and organic carbon（OC） in atmosphere were collected and analyzed in winter（8th-22 nd January, 2016） using PM（2.5） samplers and hot/light carbon analyzer, respectively. The investigation presented the average concentrations of EC and OC（incl. primary organic carbon,POC and secondary organic carbon, SOC） in the District＇s different areas（incl. agriculture, waterway traffic, commercial,highway traffic and industrial areas）. Of them the maximum concentrations of OC and SOC were in agricultural area, i.e.（16.1±6.4）μg/m3 and（4.9±3.3）μg/m3, respectively, which suggested that the pollution emissions in agricultural area made a great contribution to OC, especially SOC; the maximum concentrations of EC and POC appeared in industrial area, i.e.（4.5±2.1）μg/m3 and（11.0±5.0）μg/m3, respectively, which suggested that the emissions in industrial area contributed to elemental carbon most, especially to POC. In general, OC concentrations in commercial area, highway traffic and industrial areas, as well as EC concentrations in waterway traffic, highway traffic and commercial areas were rather high. The concentrations of EC grew notably faster than the concentrations of OC at the time when two pollution incidents took place during the investigation period.

关 键 词：江北新区 元素碳 有机碳 排放源 

分 类 号：X51[环境科学与工程—环境工程]