大连市区一次空气重污染过程分析及来源解析

利用常规空气质量监测数据、气象观测数据及HYSPLIT气流后向轨迹的模拟结果,对2016年1月2—3日大连市区出现的一次重污染过程进行综合分析,并利用在线单颗粒气溶胶质谱仪进行快速在线源解析,分析细颗粒物的行业来源。结果表明,大连市区此次污染过程是由于外来输送和本地不利气象条件的双重作用影响产生的,区域传输带来了大量的燃煤源颗粒物,燃煤排放是本次污染过程PM_(2.5)的主要来源。

Based on conventional air quality monitoring results, meteorological data, HYSPLIT backward trajectory and the fine particulate matter source apportionment results which given by the single-particle aerosol mass spec- trometer （SPAMS）, performed an analysis of the severe haze episodes shrouded Dalian from Jan 2nd to Jan 3rd. The synthetic analysis indicated that： the external pollution transport and adverse weather conditions play a dual role in leading to the process; coal combustion matters, regional pollution transported contributed a lot, is the major PM2.5 source of the air heavy pollution process.