安阳市冬季观测期间PM_(2.5) 污染特征及来源解析  

Characteristics of PM_(2.5) Pollution and Source Apportionment During Winter Sampling Campaigns in Anyang City

作　　者：刘洋 王明娅[1] 宁鹏 韩桥 王明仕[1] 孟红旗[1] LIU Yang;WANG Mingya;NING Peng;HAN Qiao;WANG Mingshi;MENG Hongqi(Institute of Resources and Environment,Henan Polytechnic University,Jiaozuo 454003,China;Henan Sino Testing International Co.LTD,Jiaozuo 454003,China)

机构地区：[1]河南理工大学资源环境学院,河南焦作454003 [2]河南中方质量检测技术有限公司,河南焦作454003

出　　处：《中国环境监测》2021年第5期83-93,共11页Environmental Monitoring in China

基　　金：河南省高等学校重点科研项目(16A170001);河南省高校基本科研业务费专项(NSFRF1631)。

摘　　要：为探究安阳市冬季PM_(2.5)的污染特征及来源,于2019年11月19—26日在安阳市3个站点(柏庄镇政府、红庙街小学、安阳师专)采集PM_(2.5)样品,并对PM_(2.5)质量浓度和无机元素、水溶性离子进行测定,利用正定矩阵因子模型(PMF)并结合大气污染源排放清单进行源解析。结果表明:观测期间安阳市的PM_(2.5)平均质量浓度为104.09μg/m^( 3),水溶性离子平均质量浓度为48.9μg/m^( 3),占PM_(2.5)质量浓度的46.9%。PMF解析结果为二次源58.9%、燃煤源15.7%、机动车排放源9.2%、扬尘源8.6%、工业源2.5%、其他源5.1%。结合2018年安阳市大气污染源排放清单对二次源贡献进行重新分配,得到安阳市PM_(2.5)主要贡献来自燃煤源29.8%、工业源28.5%、机动车源27.1%。后向轨迹聚类结果显示,安阳市气团输送路径主要有远距离传输、城市间输送和本地运输3类,其中本地运输占比最大,其次为正南和东南方向上的城市间输送。In order to study the pollution characteristics and sources of PM_(2.5)in Anyang in winter,PM_(2.5)samples were collected at 3 local sites from November 19 to 26,2019.The mass concentration and component composition of PM_(2.5)(inorganic elements,water-soluble ions)was analyzed.PMF(positive matrix factorization)combined with air pollution emission inventory were used to analyze the source contribution.The results showed that the average PM_(2.5)mass concentration in Anyang was 104.09μg/m 3 during the observation period,the average mass concentration of water-soluble ions was 48.9μg/m 3,accounting for 46.9%of the PM_(2.5)mass concentration.The PMF model showed that:secondary aerosol(58.9%),coal combustion(15.7%),vehicle source(9.2%),industry source(2.5%),dust(8.6%),other sources(5.1%).Combined with the air pollution source emission inventory of Anyang in 2018,the contribution of secondary sources was-redistributed.The results showed that coal burning sources(29.8%),industrial sources(28.5%)and motor vehicle sources(27.1%).The results of backward trajectory clustering showed that the air mass transport routes in Anyang were mainly divided into three categories:long-distance transport,inter-city transport and local transport,and the local transport took up the largest proportion,followed by inter-city transport in due south and southeast direction.

关 键 词：安阳市 大气细颗粒物 水溶性离子 无机元素 源解析 后向轨迹 

分 类 号：X823[环境科学与工程—环境工程] X513