沈阳市空气污染特征

Characteristics of air pollution in Shenyang City,China.

以沈阳市8个国控环境空气监测点位和一个清洁对照点位2004年全年小时浓度为基础数据，研究了沈阳市空气PM10、SO2和NO2的季节变化、口变化、空间分布及综合污染指数（API）等空气污染特征，并用1995～2004年的监测数据，分析了沈阳市空气质量的总体变化趋势，结果表明．首要污染物为PM10，其空气污染具有典型的煤烟型污染季节特征，环境空气质量在1995—2004年期间逐年好转。

The air pollution characteristics in Shenyang City of seasonal and daily variations and spatial distribution of PM10, SO2, NO2 and the integrated air pollution index （API） were studied using whole year hourly concentration in 2004 of eight state owned environmental air monitoring stations and the clean contrast station; and the total changing trend of the air quality of the city was analyzed using the monitoring data from 1995 to 2004. PM10 was the most important pollutant, its air pollution possessed the seasonal pollution character of typical Coal combustion; its environmental air quality was improved year by year from 1995 to 2004.