城市采暖前后黑碳气溶胶污染差异及影响因素分析  

Analysis of the differences and influencing factors of black carbon aerosol pollution before and after urban heating

作　　者：刘思宇 杜伟凯 吕东影 朱欢欢 李双江[1] 肖捷颖[1] LIU Siyu;DU Weikai;LYU Dongying;ZHU Huanhuan;LI Shuangjiang;XIAO Jieying(College of Environmental Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China)

机构地区：[1]河北科技大学环境科学与工程学院,河北石家庄050018

出　　处：《安徽大学学报（自然科学版）》2021年第4期93-99,共7页Journal of Anhui University(Natural Science Edition)

基　　金：国家生态环境部环保公益性科研专项(201409004);河北省自然科学基金资助项目(D2015208162)。

摘　　要：为研究城市采暖前后黑碳气溶胶(BC)变化特征,采用BC 1054型黑碳仪对石家庄市空气中的BC进行连续监测并分析,得到以下结果:监测期间BC平均浓度为(6.39±0.36)μg·m^(-3),浓度范围为1.04~23.39μg·m^(-3),采暖前平均浓度为(4.68±0.29)μg·m^(-3),而采暖后平均浓度为(9.20±0.68)μg·m^(-3),是采暖前的1.97倍;受人类活动影响呈明显的规律性:采暖前后BC日变化趋势为双峰双谷型,采暖后周末效应明显,BC浓度约为工作日的1.25倍;采暖前BC浓度受粗颗粒物影响较大,采暖后则受细颗粒物影响较大.石家庄市BC与CO,NO_(2),PM_(10),PM_(2.5)这4种要素来源相似,主要源于工业企业排放、机动车尾气、道路扬尘.In order to study the change characteristics of black carbon aerosol(BC)before and after urban heating,the BC 1054 black carbon meter was applied to continuously monitor and analyze the BC concentration of Shijiazhuang atmosphere.The following results were obtained:the average concentration of BC during monitoring period was(6.39±0.36)μg·m^(-3),ranged from 1.04 to 23.39μg·m^(-3),the average concentration before heating was(4.68±0.29)μg·m^(-3),while it was(9.20±0.68)μg·m^(-3)after heating,which was 1.97 times of before heating.The influence showed obvious regularity:the daily trend of BC before and after heating was the type with double valleys,and the effect on weekends after heating was obvious,the BC concentration was about 1.25 times of the working day;the BC concentration before heating was greatly affected by coarse particles,while it was more affected by fine particles after heating.BC of Shijiazhuang was similar to CO,NO_(2),PM_(10),and PM_(2.5),which mainly come from industrial enterprise emissions,motor vehicle exhaust,road dust and factory emissions.

关 键 词：黑碳气溶胶 污染特征 气象要素 影响分析 

分 类 号：X51[环境科学与工程—环境工程]