南京大学学报（自然科学版）Issue(3)：524-534,11.DOI:10.13232/j.cnki.jnju.2015.03.009
南京市细颗粒物来源解析研究
A study of chemical mass balance source apportionment of fine particulate matter in Nanjing
摘要
Abstract
Particle matter(PM)has become the primary air pollutant in Nanjing,recently.Investigation on particle matter source apportionment using Chemical Mass Balance (CMB)model could provide a theoretical basis for air quality management and air pollution control for the city.In this paper,the characteristics of PM2.5 chemical composition at Caochangmen (CCM)and Guchenghu (GCH )in Nanjing at 201 1.8,201 1.1 1,2012.1,2012.3, respectively and atmospheric PM emissions samples were analyzed.Results indicate that four months average con-centrations of PM2.5 at CCM and GCH are (100.9 ±45.2)μg·m-3 and (85.4 ±37.8)μg·m-3 ,respectively.The mass concentrations are both lowest in August.They are 82.7 μg·m-3 and 50.4 μg·m-3 ,respectively at CCM and GCH.PM2.5 of CCM is the highest in March with the average concentration reaching 134.7 μg·m-3 .The highest value of PM2.5 at GCH was found in January reaching 94.3 μg·m-3 .The main chemical compositions of PM2.5 are NO -3 ,SO 2-4 ,OC,NH +4 ,EC,Ca,Cl- ,K,Fe,Al and Na.The major emission sources are coal dust,smelting dust,soil dust,vehicle exhaust,secondary aerosols and sea salt.Results from source apportionment show that in fine particulate matter,the sources with large contribution are the secondary inorganic aerosols (63.9%,65.1%)and vehicle exhaust(12.5%、1 6.5%)at CCM and GCH,respectively.Therefore,in order to reduce the PM2.5 level in Nanjing,it is necessary to control emissions from industry and transportation.关键词
细颗粒物/化学成分/化学质量平衡模型/来源解析/南京Key words
fine particle matter/chemical composition/chemical mass balance model(CMB)/source apportionment/Nanjing分类
天文与地球科学引用本文复制引用
陈璞珑,王体健,胡忻,谢旻,庄炳亮,李树..南京市细颗粒物来源解析研究[J].南京大学学报（自然科学版）,2015,(3):524-534,11.基金项目
国家重点基础研究发展计划(2014CB441203,2011CB403406),国家科技部公益行业(环保)科研专项(201409008),国家科技部公益行业(气象)科研专项(GYHY201206011-1),国家人才培养基金(J1103410) （2014CB441203,2011CB403406）
