首页 | 本学科首页   官方微博 | 高级检索  
     检索      

宁波市环境空气中PM10和PM2.5来源解析
引用本文:肖致美,毕晓辉,冯银厂,王玉秋,周军,傅晓钦,翁燕波.宁波市环境空气中PM10和PM2.5来源解析[J].环境科学研究,2012,25(5):549-555.
作者姓名:肖致美  毕晓辉  冯银厂  王玉秋  周军  傅晓钦  翁燕波
作者单位:1. 南开大学环境科学与工程学院,天津,300071
2. 宁波市环境监测中心,浙江 宁波,315000
基金项目:天津市科技支撑重点项目(09ZCGYSF02400)
摘    要:2010年在宁波3个环境受体点采集不同季节的PM10和PM2.5样品,同时采集颗粒物源类样品,分析它们的质量浓度及多种无机元素、水溶性离子和碳等组分的含量.采用OC/EC最小比值法确定了SOC(二次有机碳)对PM10和PM2.5的贡献,据此重新构建了受体化学成分谱.使用化学质量平衡模型对宁波市区的PM10和PM2.5来源进行了解析.结果表明:城市扬尘、煤烟尘、二次硫酸盐和机动车尾气尘是环境空气中PM10的主要来源,其分担率分别为23.0%、15.9%、13.3%和12.3%;对PM2.5有重要贡献的源类是城市扬尘、煤烟尘、二次硫酸盐、机动车尾气尘、二次硝酸盐和SOC,其分担率分别为19.9%、14.4%、16.9%、15.2%、9.78%和8.85%.

关 键 词:PM10  PM2.5  源解析  化学质量平衡模型  二次有机碳

Source Apportionment of Ambient PM10 and PM2.5 in Urban Area of Ningbo City
XIAO Zhi-mei,BI Xiao-hui,FENG Yin-chang,WANG Yu-qiu,ZHOU Jun,FU Xiao-qin and WENG Yan-bo.Source Apportionment of Ambient PM10 and PM2.5 in Urban Area of Ningbo City[J].Research of Environmental Sciences,2012,25(5):549-555.
Authors:XIAO Zhi-mei  BI Xiao-hui  FENG Yin-chang  WANG Yu-qiu  ZHOU Jun  FU Xiao-qin and WENG Yan-bo
Institution:1.College of Environmental Science and Engineering,Nankai University,Tianjin 300071,China 2.Ningbo Environmental Monitoring Center,Ningbo 315000,China
Abstract:Samples of PM10 and PM2.5 and sources of particulate matter were collected in 2010 at three sites in Ningbo City,Zhejiang Province.Their inorganic elements,water solvent ions and carbon species were analyzed to identify the sources of the PM10 and PM2.5.The contributions of secondary organic carbon(SOC) to PM10 and PM2.5 were determined by the "OC/EC minimum ratio" technique,and the chemical profiles of ambient PM10 and PM2.5 were established.The sources of PM10 and PM2.5 in Ningbo City were analyzed based on the chemical mass balance(CMB) receptor model.The results showed:1) suspended dust,fly ash from coal combustion,sulfate and vehicle exhaust were the important sources of PM10,with contributions of 23.0%,15.9%,13.3% and 12.3%,respectively;2) the most important PM2.5 sources were suspended dust,fly ash from coal combustion,sulfates,vehicle exhaust,nitrates and SOC,with contributions of 19.9%,14.4%,16.9%,15.2%,9.78% and 8.85%,respectively.
Keywords:PM10  PM2  5  source apportionment  CMB  SOC
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《环境科学研究》浏览原始摘要信息
点击此处可从《环境科学研究》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号