作　　者： ; ; ; ; ; ;

机构地区： 中华人民共和国环境保护部

出　　处： 《中国环境监测》 2009年第2期53-56,共4页

摘　　要： 于2007年12月至2008年2月利用黑碳仪（Aethalometer）和气体在线观测仪（Thermo 42i型二氧化硫、43i型氮氧化物和49i型臭氧分析仪）和MAWS自动气象站获得了大气细粒子中每5分钟黑碳气溶胶（Bc）浓度，每1小时SO2、NO2、NO和O3浓度和风速、风向等气象因子观测数据。结果发现，黑碳日均值浓度值为10．5±7．7μg／m^3，浓度变化范围为2．7—34．8μg/m^3。非降雨期BC有相对明显的两个峰值和一个谷值；降雨期BC昼间呈单调上升，夜间呈单调降低。通过对BC与气体污染物相关性分析并结合城市污染源分布，发现BC的最主要来源是工业燃煤和机动车尾气排放。 Black carbon （BC） aerosol, SO2, NO2, NO, 03 and meteorological factors have been measured with an Aethalometer and thermo gas analyzers and MAWS weather station at Guangzhou station from December 2007 to February 2008 . The results indicated that average BC daily concentration was 10.5 ± 7.7 μg/m^3 , ranged from 2.7 to 34.8 μg/m^3 Two notable peaks and one valley appeared in the daily variations of BC during the normal days. BC hourly concentrations ascend in day time and descend in night time during the rain days. The industrial coal - fired emission and vehicles emission were the most important sources of BC, by analyzing correlation between BC and gaseous pollutants and industrial sources distribution.

关 键 词： 黑碳 气体污染物 气象因子

领　　域： [环境科学与工程]