【摘要】 为研究舟山市大气细颗粒物(PM_2.5)的主要污染来源,在2016年4月—2017年1月期间利用3个国控点对舟山市PM_2.5开展手工监测,并对其主要污染源进行样品采集,基于420个环境样品和13类源样品的化学组分分析,应用CMB-二重源解析技术,对舟山市颗粒物受体成分谱、本地化源成分谱的组分特征和颗粒物的污染来源进行分析。结果表明:普陀点的PM_2.5浓度均值低于位于主城区的檀枫点和临城点,3个站点的颗粒物浓度分别为（36. 46±19. 40）,（40. 92±20. 68）,（40. 03±21. 55）μg/m³。PM_2.5受体中以NO₃^-、SO₄^2-、NH₄⁺等二次组分含量最高,二次无机盐和移动源是监测期间舟山市大气PM_2.5的主要来源,解析结果具有显著的海岛型城市特征。以船舶源为代表的移动源既是颗粒物的重要一次源,又是二次无机盐生成的主要前体物贡献来源之一,故加强移动源的排放管理对于舟山市的颗粒物污染防治具有重要意义。更多还原

【Abstract】 In order to identity the main pollution sources of atmospheric fine particles( PM_2.5) in Zhoushan,manual monitoring of atmospheric fine particles in Zhoushan was carried out using 3 state monitoring stations during the period from April 2016 to January 2017,and the main pollution sources of particles in Zhoushan were sampled as well. Then according to the chemical composition analysis of 420 ambient samples and 13 source samples,CMB-improved-source-analysis technique was applied for research and analysis of spectrum of particle receptor competent in Zhoushan,composition characteristics of localized source component spectrum and source of the particles. The results showed that: Putuo station had a lower average PM_2.5 concentration than Tanfeng station and Lincheng station,and the average concentration of PM_2.5 of the three stations was（ 36. 46±19. 40）,（ 40. 92±20. 68） and（ 40. 03±21. 55） μg/m³,respectively. The secondary components,such as NO₃^-,SO₄^2-,NH₄⁺,were of the highest content in PM_2.5,the secondary inorganic salts and mobile sources were the most important sources for PM_2.5,showing the significant characteristics of the main source of atmospheric PM_2.5 in Zhoushan during the monitoring period,and the analysis result showed significant characteristics of island-type city. The mobile source represented by the ship source was not only an important primary source of particles,but also one of the main precursors contributor for secondary particles’ formation,thus strengthening the emission management of mobile sources was of great significance for the prevention and control of particle pollution in Zhoushan.更多还原