广东某工业城市空气质量变化特征分析

Analysis of Air Quality Change Characteristics in Industrial City in Guangdong Province

以一典型工业城市为研究对象,利用该城市国控环境空气质量自动站2016—2020年的二氧化硫(SO2)、二氧化氮(NO2)、可吸入颗粒物(PM10)、臭氧(O3)、一氧化碳(CO)、细颗粒物(PM2.5)监测数据,分析该城市环境空气中六项主要的空气污染物浓度、AQI达标率、各级污染级别的首要污染物占比和年际变化趋势及其主要污染特征。结果表明:5年间,该城市主要大气污染物的污染程度表现为O3>PM2.5>NO2>PM10>CO>SO2,空气质量综合指数呈现波动性改善趋势,但臭氧污染日渐凸显,且O3已成为影响空气质量最为关键的大气污染物。通过分析该区大气质量变化,有针对性地提出空气质量改善建议。

This paper takes a typical industrial city as an example,and uses the monitoring data of sulfur dioxide(SO2),nitrogen dioxide(NO2),inhalable particulate matter(PM10),ozone(O3),carbon monoxide(CO),and fine particulate matter(PM2.5)of the city's state-controlled ambient air quality automatic station from 2016 to 2020.The concentration of six major air pollutants,AQI compliance rate,the proportion of primary pollutants at all pollution levels,the trend of interannual change and the main pollution characteristics were analyzed.The results show that over the past 5 years,the pollution level of the main air pollutants in the city has shown a fluctuating improvement trend,with O3>PM2.5>NO2>PM10>CO>SO2.However,ozone pollution is becoming increasingly prominent,and O3 has become the most critical air pollutant affecting air quality.By analyzing the changes in atmospheric quality in the area,targeted suggestions for improving air quality are proposed.