哈尔滨春季大气PM_(2.5)物理化学特征及来源解析  

Physico-chemical Characteristics and Source Identification of Atmospheric PM_(2.5) in Harbin during Spring Season

作　　者：刘彦飞[1,2] 邵龙义[1] 王彦彪[2] 李卫军[1] 

机构地区：[1]中国矿业大学(北京)资源与地球科学系,北京100083 [2]黑龙江科技学院资源与环境工程学院,黑龙江哈尔滨150027

出　　处：《环境科学与技术》2010年第2期131-134,149,共5页Environmental Science & Technology

摘　　要：应用场发射扫描电镜(FESEM)和带能谱的扫描电镜(SEM-EDX)对哈尔滨市春季市区大气PM2.5的物理和化学特征进行研究。微观图像表明PM2.5颗粒类型主要为矿物、烟尘集合体、飞灰和超细颗粒物;从各种颗粒的数量-粒度、体积-粒度分布及矿物元素分析表明,哈尔滨市大气PM2.5颗粒中,矿物、烟尘集合体、飞灰是颗粒的主要成分,分别来源于扬尘、燃煤燃烧和机动车尾气排放。A field emission scanning electron microscope （FE-SEM） and energy dispersive X-ray spectroscopy （SEM-EDX） were used to examine the inhalable particulates pollution in Harbin during spring season with respect to PM2.5 physico-chemical properties of and the source identification. It has been revealed from the image analysis that the city＇s particles mainly consist of mineral particles, soot aggregates, fly ash and ultra-fine particulates, which can be traced to the flying dust from construction sites, coal combustion and auto exhaust.

关 键 词：扫描电镜 单颗粒 粒度 元素分析 源解析 

分 类 号：X513[环境科学与工程—环境工程]