石家庄夏季道路尘有机碳和元素碳特征及来源  

CHARACTERISITICS AND SOURCE OF ORGANIC CARBON AND ELEMENT CARBON FROM PAVED ROAD DUST IN SHIJIAZHUANG DURING SUMMER

作　　者：郭森 王蕾 周盼[1] 郭硕[1] 秦伟 安塞 肖捷颖[1] 刘娟 姬亚芹[3] GUO Sen;WANG Lei;ZHOU Pan;GUO Shuo;QIN Wei;AN Sai;XIAO Jie-ying;LIU Juan;JI Ya-qin(School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China;Hebei Xingxiang Environmental Protection Technology Co. ,Ltd, Xingtai 054000, China;School of Environmental Science and Engineering, Nankai University, Tianjin 500071, China)

机构地区：[1]河北科技大学环境科学与工程学院,石家庄050018 [2]河北兴襄环保科技有限公司,河北邢台054000 [3]南开大学环境科学与工程学院,天津300071

出　　处：《环境工程》2018年第4期122-126,共5页Environmental Engineering

基　　金：国家环保部环保公益性科研专项(201409004);河北省自然基金项目(D2015208162);国家自然基金项目(41471027);河北科技大学五大平台基金项目(2015PT68);中国科学院新疆生态与地理研究所荒漠与绿洲生态国家重点实验室基金

摘　　要：为明确石家庄市夏季道路尘中有机碳和元素碳污染特征及来源,用样方法采集市区4种不同类型共8条铺装道路尘样,处理后经热光碳分析仪测定有机碳(OC)和元素碳(EC)组分。结果表明:总碳(TC)在道路尘PM_(2.5)、PM_(10)中质量分数分别为129 465.2,103 911.4μg/g;PM_(2.5)和PM_(10)中OC和EC相关系数分别为0.94和0.86,可认为OC、EC来源基本一致;OC/EC均>2,表明存在二次有机碳(SOC)的贡献;通过OC/EC最小比值法估算得出SOC占PM_(2.5)和PM_(10)中OC总量的42.5%和32.8%,一次有机碳(POC)贡献较大;夏季道路积尘中的碳主要来自于汽、柴油车尾气排放、大气降尘中燃煤成分和生物质燃烧。In order to analyze pollution characteristics of OC and EC from road dust in Shijiazhuang in summer,road dust samples were collected from 8 paved roads dividied into 4 types. Thermal/optical carbon analyzer（IMPROVE-TOR） was employed to detect the concentrations of 8 carbon fractions in dust samples. Results showed that the concentration of total carbon（TC） of PM2.5 and PM10 were 129 465. 2,103 911. 4 μg/g. The correlation between concentration of OC and EC in PM2.5 and PM10 was significant for R = 0. 94,0. 86,which indicated that they had similar source. All OC/EC ratios exceeded2,that suggested that there existed SOC contributing to OC. Mass concentration of SOC occupied 42. 5% and 32. 8% of OC in PM2.5 and PM10 estimated by minimum OC/EC ratio method. POC had significant contribution to OC. Both OC/EC analysis and principal component analysis indicated that vehicle exhaust,deposition of coal combustion and biomass combustion were the primary sources of OC and EC from road dust in Shijiazhuang during summer.

关 键 词：道路尘 有机碳元素 碳污染特征 来源解析 

分 类 号：X513[环境科学与工程—环境工程]