辽宁省三城市大气颗粒物来源解析研究

针对辽宁省的沈阳、抚顺、葫芦岛三个城市的大气颗粒物来源,应用CMB化学质量平衡模型和二重源解析技术进行了定性和定量解析。识别各源类及其成分谱的特征,分析、比较大气颗粒物的时空分布特征,并计算三城市各源类在不同季节对城市大气颗粒物污染的贡献率,得到辽宁省城市大气颗粒物来源和季节分布特征的一般规律,说明城市扬尘、土壤风沙尘和煤烟尘是城市颗粒物的主要来源,应作为颗粒物污染治理的重点,而抚顺市特有的钢铁尘,葫芦岛市特有的锌尘等源类的污染也不容忽视。

Study on Source Apportionment for Ambient Air Particulate Matter in Three Cities of Liaoning Province

The paper was aimed at air particular pollution problem in three Liaoning Provincial cities,Shenyang,Fushun,Huludao.The qualitative and quantitative analysis on source apportionment of particulate matters was made by applying chemical mass balance model(CMB) and nested chemical mass balance(NCMB) technique.Some general rules on air particulate source and its seasonal distribution characteristics were concluded through identifying different type of sources and the characteristics of their compositions,analyzing and comparing the concentration levels of those in receptors,together with calculating pollution contributive rate of different type of sources to cities in different seasons.The paper indicated the main sources of urban particulate matter are urban fugitive dust,soil dusts and coal soot,which should be taken as major factors of particulate pollution control.Meanwhile some typical sources such as steel dust and zinc dust should not be ignored.