摘要
于2013年6月至2014年5月在贵阳市城区设置采样点,利用国产武汉天虹智能采样器连续一年采集大气颗粒物（Pm2.5）样品共357个,采用HOBO U30气象仪同步记录气象数据。气象数据分析表明贵阳市春、秋和冬季均为东北风,夏季多南风且风速较大,全年以东北风为主。结合气象数据分析了贵阳市市区Pm2.5污染特征并初步讨论其来源。结果表明：Pm2.5日浓度范围为4-193μg/m^3,平均值为70±33μg/m^3,日超标率为46%。以季节来看,夏季Pm2.5浓度最低,冬季最高,秋、春季次之。Pm2.5主要来源于工业排放与燃煤污染。与国内其它城市研究相比,处于轻度污染水平。
Three hundred and fifty seven samples of PM2.5in ambient air were continuously collected in Guiyang City from May2013 to May 2014 using the Wuhan Tianhong Sampler.Meteorological data were simultaneously recorded by HOBO U30,which exhibited that dormant northeast winds occurred in spring,autumn and winter,while south winds and high speed were found in summer.Results show that daily concentrations of PM2.5ranged from 4.0μg/m^3 to 193μg/m^3 with an average of 70±33μg/m^3.Concentrations of PM2.5exhibited obviously seasonal variations,winterautumnspringsummer.Potential sources of PM2.5 mainly resulted from coal and industrial emissions.Compared with the other cities in China,results for PM2.5were slightly low.
出处
《地球与环境》
CAS
CSCD
2015年第3期290-295,共6页
Earth and Environment
基金
贵阳市科技计划项目(筑科合同[2011401]社6-3号)
贵阳市科技计划项目(筑科合同[2012303]14号)
