琼中黎族苗族自治县环境空气质量月报
(2020年03月)
琼中县环境保护监测站 二O二O年四月
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2020年03月份环境空气质量状况
一、基本情况
琼中县空气自动监测站位于国土环境资源局站楼顶,每日24小时实时对我县空气主要污染物二氧化硫、二氧化氮、一氧化碳、臭氧、可吸入颗粒物PM10和PM2.5的浓度进行监测。
二、监测结果
2020年03月应监测天数为31天,监测有效天数为29天,优良天数为29天,优良天数比例为100%,环比持平。
SO2平均浓度为5μg/m3,环比下降4μg/m3,同比上升2μg/m3;
NO2平均浓度为3μg/m3,环比持平,同比下降6μg/m3;
PM10平均浓度为18μg/m3,环比下降1μg/m3,同比下降6μg/m3;
PM2.5平均浓度为11μg/m3,环比下降2μg/m3,同比下降6μg/m3;
CO日均值第95百分位浓度平均为0.9mg/m3,环比上升0.2mg/m3,同比持平;
O3日最大8 小时平均第90 百分位浓度平均为73μg/m3,环比下降7μg/m3,同比上升42μg/m3;