“十二五”期间沈阳市环境空气质量时间分布特征研究

根据"十二五"期间沈阳市的环境空气数据,对沈阳市的环境空气质量时空特征进行分析。结果显示,"十二五"期间,沈阳市城市环境空气质量呈现明显的季节性变化,采暖期环境空气污染明显重于非采暖期;冬季污染最重,夏季污染最轻,二氧化硫差异最大;二氧化硫、二氧化氮1 d中相对污染较重的时段分别为6:00～10:00和19:00～22:00;可吸入颗粒物、细颗粒物、一氧化碳及臭氧1 d中仅有一个相对高值时段。

According to the data of the ambient air in Shenyang during the 12th Five-Year Plan period, the spatial and temporal distribution characteristics of environmental air quality in Shenyang were analyzed. During the 12th Five-Year Plan period, the urban environmental air quality in Shenyang showed significantly seasonal changes. In the heating period, the ambient air pollution is obviously heavier than that in the non-heating period;in winter, the pollution is heaviest, the summer pollution is the lightest, and the difference in sulfur dioxide is the largest;sulfur dioxide and nitrogen dioxide have two periods of relatively heavy pollution in one day, which are 6:00~10: 00 and 19:00 to 22:00, respectively;only a relatively high value period of inhalable particulate matter, fine particulate matter, carbon monoxide, and ozone in one day.