遂宁市城区环境空气质量状况和变化特征

Environmental Air Quality Status and Characteristics of Suining City Urban Area

根据2018年遂宁市主城区环境空气自动监测数据,分析了2018年遂宁市环境空气质量状况,研究了空气质量变化特征,并与周边市州的空气质量进行了横向比较。研究结果发现,2018年遂宁市空气质量优良率为89.6%,优良率最高的月份是3月和9~11月,最低的是2月、其次是1月;六种污染因子中仅PM2.5年均浓度未达到空气质量二级标准,其超标0.02倍;PM10和PM2.5月均浓度整体上呈现出“船式”变化趋势,而O3呈现出与其相反的变化趋势;遂宁市2018年的空气质量较同期显著改善,并明显优于周边地区。

Based on ambient air monitoring data of Suining urban in 2018, the air quality of Suining Ctiy was analyzed, the change characteristics of Suining city was researched, and the horizontal comparison was conducted with atmospheric environmental qualities of the surrounding areas of Suining City. The results demonstrated that the air qualification rate of Suining City in 2018 was 89.6 %, the highest month of the air qualification rate were March, September, October and Novemer, but the lowest month was Februaryt, and the second lowest month was January. The six pollution factors except PM2.5 meet the national secondary standards, and PM2.5 concentration was 0.02 times over the national secondary standard. On the whole, the variations of monthly average concentration of PM10 and PM2.5 were “boat form”, but the variations of monthly average concentration of O3 was in those opposite directions. The air quality of Suining in 2018 was better than that in 2017, and obviously better than those of its surrounding areas.