025-83701931 设为首页 加入收藏
文章摘要
宜兴市细颗粒物化学特征和来源解析
Chemical Characteristics and Source Apportionment of Fine Particles in Yixing
  
DOI:
中文关键词: 细颗粒物  化学质量平衡模型  来源解析  宜兴
英文关键词: PM2.5  Chemical mass balance model  Source apportionment on fine particles  Yixing
基金项目:国家自然科学基金资助项目(91544230,41575145,41621005);国家重点研发计划基金资助项目(2016YFC0208504,2016YFC0203303);国家重点基础研究发展计划基金资助项目(2014CB441203)
作者单位
王大春 宜兴市环境监测站 
陈璞珑 南京大学大气科学学院 
黄图南 南京大学环境规划设计研究院有限公司 
王体健 南京大学大气科学学院 
史文科 宜兴市环境监测站 
史梦伟 宜兴市环境监测站 
摘要点击次数: 838
全文下载次数: 0
中文摘要:
      通过在宜兴市3个监测站点对细颗粒物(PM2.5)开展不同季节采样,对样品做化学分析,结合化学质量平衡(CMB)模型解析PM2.5来源贡献。结果表明,宜兴市PM2.5年均质量浓度为37.5 μg/m3,冬季质量浓度最高,为 53.1 μg/m3。PM2.5主要化学成分为SO2-4、NO-3、OC、EC、NH+4、Cl-、Ca、Na、Al。PM2.5的主要排放源贡献为二次硫酸盐(21.0%)、二次有机气溶胶(14.9%)、二次硝酸盐(14.1%)和燃煤电厂(8.0%)。利用本地排放源清单进行二次来源解析,得到全年主要排放源贡献为工业(33.1%)、燃煤(23.1%)、移动源(17.6%)、扬尘(9.3%)和其他来源(16.9%)。减轻颗粒物污染,重点是控制工业生产、燃煤及机动车中的排放。
英文摘要:
      In this study, fine particles were sampled at three environmental monitoring stations at all seasons in Yixing, the concentration of their chemical compositions were determined. The source of PM2.5 was analyzed by the chemical mass balance (CMB) model. Results showed that the annual average concentration of PM2.5 in Yixing was 37.5 μg/m3. The concentration of 53.1 μg/m3 in winter was the highest. The main chemical compositions of PM2.5 were SO2-4, NO-3, OC, EC, NH+4, Cl-, Ca, Na and Al, and the main sources were secondary sulfate (21.0%), secondary organic aerosol (14.9%), secondary nitrate (14.1%) and coal fired power plant (8.0%). With local emission inventory, the main sources of emission were from industry (33.1%), coal combustion (23.1%), vehicle exhaust (17.6%), dust (9.3%) and other sources (16.9%) according to secondary source apportionment. The key point of reducing particulate pollution was controlling the emission from industry, coal combustion and vehicle.
查看全文   查看/发表评论  下载PDF阅读器
关闭