徐州市区主干道路黑炭气溶胶浓度移动观测实验

A Mobile Measurement on Black Carbon Concentrations along the Main Roads of Xuzhou Downtown

将AE-42便携式黑炭(BC)仪和GPS接收机同时搭载到汽车平台上组成移动观测系统,测量徐州市区主干道路的BC气溶胶浓度。观测及分析揭示:徐州市外环区域的BC气溶胶浓度较高,主要来源于工业排放和机动车尾气,尤其是柴油机动车尾气的排放;市中心区的BC气溶胶质量浓度较低,与人的出行活动密切相关;主要交通干道的BC气溶胶浓度取决于交通密度和街道特点,在不同时段内会呈现明显的高低分布差异。实验表明,AE-42便携式BC仪和GPS接收机组成的移动观测平台便捷有效,具有灵活机动性和推广应用价值。

In this paper, a black carbon （BC） concentration measurement experiment along the main roads of Xuzhou downtown is done by using a mobile measuring system, which is consisted of an AE-42 portable BC Aethalometer and a GPS receiver carried by a moving car. Analysis to the measurements revealed that： 1） the BC aerosol concentration along the main roads of Xuzhou tends to be higher, and comes mainly from industrial emission and vehicle exhaust, especially the exhaust from diesel vehicle; 2） the BC aerosol concentration at downtown center is lower, and is closely related to citizens＇ activities; 3） the BC aerosol concentration along the main roads of Xuzhou is dependent on traffic density and road limitation, and it gets variable with time difference The experiment and results illustrate that the mobile measuring platform, consisted of an AE-42 portable BC Aethalometer and a GPS receiver, has characteristics of convenience, effectiveness and flexibility, and has potential application in other cities.