环境工程学报2013，Vol.7Issue(4)：1477-1481,5.
西安市冬、夏两季PM2.5中碳气溶胶的污染特征分析
Pollution characteristics of carbon aerosol in PM2.5 of Xi' an during winter and summer
摘要
Abstract
PM2.5 were collected by RP1400a instrument of TEOM series during winter and summer in Xi' an to study the variations of carbon aerosol, and the levels of organic carbon ( OC ) , elemental carbon ( EC ) and water soluble carbon (WSOC) in samples were determined. The results showed that seasonal average concentrations of OC and EC in PM2.5 were higher in winter, the values were about 2. 62 and 1. 75 times of summer, respectively, which indicated that carbonaceous aerosol pollution was more serious in winter. The daily average concentrations of OC and EC presented double peak distribution in different seasons, that was mainly caused by the traffic source emissions and adverse weather conditions. The concentrations of OC and EC showed significant correlations in winter (R2 =0.823) and summer (R2 =0.543) , the average ratios of OC/EC were 5.36 and 3.58, respectively, which suggested that secondary organic carbon (SOC) were generated in the atmospheric particles.关键词
PM2.5/有机碳(OC)/无机碳(EC)/西安Key words
PM2.5/ organic carbon (OC) / elemental carbon (EC) / Xi'an分类
资源环境引用本文复制引用
张承中,丁超,周变红,陶李,刘立忠..西安市冬、夏两季PM2.5中碳气溶胶的污染特征分析[J].环境工程学报,2013,7(4):1477-1481,5.基金项目
陕西省自然科学基金资助项目(2007D20) （2007D20）
陕西省教育厅专项科研基金资助项目(06JK268) （06JK268）
