摘要
针对沈阳市大气环境分析了2011年7月至2012年3月期间沈阳市太原街、北陵街及科技园三处的PM2.5含量,研究表明:监测位置PM2.5超标率为15%,变化范围在0.02～0.07 mg/m3之间,冬季浓度高于夏季浓度,反映了主要源排放(燃煤)变化与气象条件的共同影响,并且监测PM10含量与PM2.5存在很好的线形关系,同时对PM2.5离子组分和多环芳烃进行了分析,发现PM2.5系颗粒物含有阴离子、多环芳烃等污染物,多环芳烃的含量在16.0～35.1 ng/m3之间.
To understand the concentration levels and the mineral component of PM2.5 in the ambient air in Shanyang,the samples were simultaneously collected from July,2011 to March,2012 at Taiyuan street,Beiling street and Science park.The sample analysis results show that the probability of exceeding standard limit for PM2.5 concentration is 15%,and the PM2.5 concentration,which is higher in winter than that in summer,varies from 0.02 to 0.07mg/m3.There is a high level linear correlation between the concentrations of PM2.5 and PM10.Furthermore,the analysis of ion component and polycyclic aromatic hydrocarbons(PAHs) in PM2.5 particle shows that there are anion and PAHs in PM2.5 particle,and the variation range of PAHs concentration is 16.0～35.1 ng/m3.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2012年第5期778-781,共4页
Journal of Liaoning Technical University (Natural Science)
关键词
沈阳市
PM2.5
污染特征
监测
多环芳烃
大气环境
离子组分
防护对策
Shenyang city
PM2.5
pollution characteristics
monitor
polycyclic aromatic hydrocarbons
atmospheric environment
ion component
protection countermeasures
