琼中黎族苗族自治县环境空气质量月报
(2020年04月)
琼中县环境保护监测站 二O二O年五月
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2020年04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04月应监测天数为30天,监测有效天数为27天,优良天数为27天,优良天数比例为100%,环比持平。
SO2平均浓度为4μg/m3,环比下降1μg/m3,同比下降2μg/m3;
NO2平均浓度为12μg/m3,环比上升9μg/m3,同比上升5μg/m3;
PM10平均浓度为19μg/m3,环比上升1μg/m3,同比持平;
PM2.5平均浓度为12μg/m3,环比上升1μg/m3,同比上升1μg/m3;
CO日均值第95百分位浓度平均为1.0mg/m3,环比上升0.1mg/m3,同比上升0.2mg/m3;
O3日最大8 小时平均第90 百分位浓度平均为88μg/m3,环比上升15μg/m3,同比上升23μg/m3;