西南典型高原山地城市大气黑碳气溶胶污染特征及来源解析  

Characteristics and Source Apportionment of Black Carbon in the Atmosphere of Typical Plateau City in Southwest China

作　　者：周瑞国 梁隆超 肖德安 董娴[2] 陈卓[2,5] 仇广乐 ZHOU Ruiguo;LIANG Longchao;XIAO Dean;DONG Xian;CHEN Zhuo;QIU Guangle(Weifang Institute of Exploration and Mapping,Weifang 261041,China;School of Chemistry and Material Science,Guizhou Normal University,Guiyang 550001,China;State Key laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550081,China;College of Resource and Environmental Engineering,Guizhou Institute of Technology,Guiyang 550003,China;State Key Laboratory of Atmospheric Fine Particles and Air Pollution Chemistry of Guiyang,Guiyang 550001,China)

机构地区：[1]潍坊市勘察测绘研究院,山东潍坊261041 [2]贵州师范大学化学与材料科学学院,贵阳550001 [3]中国科学院地球化学研究所环境地球化学国家重点实验室,贵阳550081 [4]贵州理工学院资源与环境工程学院,贵阳550003 [5]贵阳市大气细粒子和大气污染化学重点实验室,贵阳550001

出　　处：《地球与环境》2021年第4期375-380,共6页Earth and Environment

基　　金：国家自然科学基金项目(21767007);贵州省科学技术基金项目(黔科合J字[2011]2089);贵州省科技计划项目(黔科合基础[2018]1111);贵州省科技计划项目(黔科合平台人才[20175726])。

摘　　要：利用大气细颗粒物采样仪器(青岛崂应2050型)和黑碳仪(Soot Scan^(TM)Model OT21),于2016年5月至2017年4月对贵阳市城区大气黑碳进行了连续采样和监测。结果表明,大气黑炭的浓度为1.17~12.77μg/m^(3),平均值为5.19±1.91μg/m^(3),季节变化特征呈现为冬季>秋季>春季≈夏季。大气黑碳气溶胶含量与大气细粒颗粒物PM2.5质量浓度及钾离子含量呈显著正相关性,相关系数分别为R^(2)=0.64(P<0.01)和R^(2)=0.31(P<0.01)。源解析结果显示,化石燃料(51.9%)、生物质燃烧(32.4%)和餐饮油烟排放(15.7%)是大气黑碳气溶胶的主要来源。后向轨迹模型HYSPLIT显示,贵阳市全年大气污染气团主要来自我国境内,污染气团的来源与贵阳市大气主导风向有关。Atmospheric fine particle in Guiyang City was collected with Laoying Model 2050 during May 2016 to April 2017 and measured for black carbon(BC)using Aethalometer(Soot Scan^(TM)Model OT21).Results showed that concentrations of BC ranged from1.17 to 12.77μg/m^(3),with an average of 5.19±1.91μg/m^(3).Seasonal variation of BC was in the order of winter>autumn>spring≈summer.Significantly positive correlations between BC and PM2.5(R^(2)=0.64,P<0.01)as well as between potassium ion(R^(2)=0.31,P<0.01)were observed.Sources apportionment suggested BC originated from fossil fuels(51.9%),biomass burning dust(32.4%),and catering fume emissions(15.7%).Cluster analyses on back-trajectories illustrated that the impacted air mass mainly came from domestic regions,and was controlled by dominant wind directions in Guiyang.

关 键 词：黑碳 季节变化 影响因素 来源解析 

分 类 号：X513[环境科学与工程—环境工程]