| 2015年南京市PM2.5与PM10的污染特征 |
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| 引用本文： | 王涛, 何浩奇, 夏忠欢, 吴敏敏, 张倩倩. 2015年南京市PM2.5与PM10的污染特征[J]. 环境工程学报, 2017, 11(11): 5978-5985. doi: 10.12030/j.cjee.201608024 |
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| 作者姓名： | 王涛 何浩奇 夏忠欢 吴敏敏 张倩倩 |
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| 作者单位： | 1. 江苏省物质循环与污染控制重点实验室, 南京师范大学环境学院, 南京 210023; 2. 虚拟地理环境教育部重点实验室(南京师范大学), 南京 210023; 3. 南京师范大学计算机科学学院, 南京 210023; 4. 江苏省地理信息资源开发与利用协同创新中心, 南京 210023; 5. 江苏省地理环境演化国家重点实验室培育建设点, 南京 210023 |
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| 基金项目： | 国家自然科学基金资助项目（41001344，41673108） 国家重点基础研究发展计划项目（973项目）（2014CB953802） 中国博士后科学基金项目（2013M541696） 江苏省高校自然科学研究项目（13KJB610008） 江苏省博士后科研资助计划项目（1301040C） 环境基准与风险评估国家重点实验室课题（SKLECRA2013OFP07） 南京师范大学高层次人才科研启动基金项目（2012105XGQ0102） 南京师范大学研究生教育教学改革研究与实践课题（1812000002A521，1812000002A479） 国家留学基金项目（201606865021） 江苏高校优势学科建设工程资助项目（164320H116） |
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| 摘 要： | 分析了2015年南京市PM2.5和PM10的浓度特征和大致来源类型。PM2.5和PM10的年均浓度分别为56.6 μg·m-3和96.5 μg·m-3，污染水平较高。颗粒物浓度的季节变化特征一致：冬 > 春 > 秋 > 夏；PM2.5的日变化呈"单峰单谷"型，而PM10的呈"单峰双谷"型。颗粒物浓度在城区高于郊区；植被茂盛区域的浓度较低。对PM2.5/PM10而言，比值在冬季和梅雨期较大，分别受取暖和降水的影响；比值在春季和夏末秋初较小，分别受沙尘和秸秆焚烧的影响。PM2.5多为二次颗粒物，PM10多为一次颗粒物；固定污染源对PM2.5的间接贡献和对PM10的直接贡献较移动污染源而言更大。
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| 关 键 词： | 南京市 细颗粒物 粗颗粒物 污染特征 |
| 收稿时间： | 2016-09-05 |
Pollution characteristics of PM2.5 and PM10 in 2015 in Nanjing,China |
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| WANG Tao, HE Haoqi, XIA Zhonghuan, WU Minmin, ZHANG Qianqian. Pollution characteristics of PM2.5 and PM10 in 2015 in Nanjing, China[J]. Chinese Journal of Environmental Engineering, 2017, 11(11): 5978-5985. doi: 10.12030/j.cjee.201608024 |
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| Authors: | WANG Tao HE Haoqi XIA Zhonghuan WU Minmin ZHANG Qianqian |
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| Affiliation: | 1. Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Environment, Nanjing Normal University, Nanjing 210023, China; 2. Key Laboratory of Virtual Geographic Environment(Nanjing Normal University), Ministry of Education, Nanjing 210023, China; 3. School of Computer Science, Nanjing Normal University, Nanjing 210023, China; 4. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China; 5. State Key Laboratory Cultivation Base of Geographical Environment Evolution(Jiangsu Province), Nanjing 210023, China |
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| Abstract: | This study focused on the concentration characteristics and general source types of PM2.5 and PM10 in 2015 in Nanjing, China. Particulate air pollution in Nanjing was at serious levels with annual mean concentrations of PM2.5 and PM10 56.6 μg·m-3 and 96.5 μg·m-3, respectively. The order of the seasonal mean concentrations of PM2.5 and PM10 was:winter > spring > autumn > summer. Hourly concentrations on an average day showed a ‘peak-low’ pattern for PM2.5 while a ‘low-peak-low’ pattern for PM10. The concentrations of both PM2.5 and PM10 were higher in urban areas than in suburbs. Meanwhile, the concentrations were low in lush vegetation areas. The ratios of PM2.5/PM10 were greater in winter and plum rain season, resulting from the heating process and frequent rainfall, respectively. The ratios were lower in spring and during the late summer and early autumn, resulting from sandstorms and frequent straw combustion, respectively. PM2.5 existed mainly as secondary particulate matter, whereas PM10 existed mainly as primary particulate matter. Stationary sources made more indirect contributions to PM2.5 and more direct contributions to PM10 than mobile sources. |
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| Keywords: | Nanjing PM2.5 PM10 pollution characteristic |
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