基于AQI技术规范的NO_(2)污染特征分析

Analysis of NO_(2) Pollution Characteristics Based on AQI Technical Specifications

NO_(2)是环境空气中主要的污染物,对环境空气质量影响较大。依据2016—2020年滁州市NO_(2)数据,分析滁州市NO_(2)污染特征和污染成因。结果表明,滁州市NO_(2)污染多发生在秋冬季,且污染物浓度呈升高趋势,在扩散条件不利时,小时浓度值急剧升高,极易造成NO_(2)的轻度水平污染,降低了空气质量的优良比例。

NO_(2) is the main pollutant in the ambient air,which has a great impact on the ambient air quality.Based on the NO_(2) data of Chuzhou from 2016 to 2020,this paper analyzed the characteristics and causes of NO_(2) pollution in Chuzhou.The results show that most of the NO_(2) pollution in Chuzhou occurs in autumn and winter and tends to increase.When the diffusion conditions are unfavorable,the hourly concentration value rises sharply,which is very easy to cause slight level pollution of NO_(2) and reduce the excellent proportion of air quality.