【摘要】 为研究焦作市大气污染特征及其相关性,对2015—2017年焦作市4个国控空气监测点位的监测数据进行统计分析。结果表明:2015—2017年城区环境空气污染SO₂、NO₂、CO、PM₁₀、PM_2.5浓度均呈逐年下降趋势;大气污染浓度季节变化特征明显,PM₁₀、PM_2.5、SO₂、NO₂、CO的浓度均为冬季最高、夏季最低,空气质量指数也在冬季达到最高值; O₃浓度则为夏季最高、冬季最低。2017年焦作市沙尘天气共计36 d,严重影响了环境空气中颗粒物的浓度。由PM_2.5与PM₁₀的比值说明大气颗粒物污染以PM_2.5为主。通过SPSS软件分析,SO₂、NO₂、CO、PM₁₀、PM_2.5浓度间呈两两正相关,O₃浓度与NO₂、CO呈负相关。更多还原

【Abstract】 To study the pollution characteristics and relevance of atmospheric pollutants in Jiaozuo,this paper analyzed the 2015-2017 monitoring data of 4 ambient air monitoring sites in Jiaozuo. The results showed that the concentrations of SO₂,NO₂,CO,PM₁₀,PM_2.5 decreased in the city year by year.Atmospheric pollutants had obvious seasonal characteristics. The concentration of PM10,PM_2.5,SO₂,NO₂,CO were the highest in winter and lowest in autumn,while the AQI was the highest in winter. But the concentration of O₃ was the highest in summer and lowest in winter. The dusty weather in 2017 totaled 36 d,which seriously affected the concentration of particulate matter in the ambient air.The ratio of atmospheric PM_2.5 to PM₁₀ showed that atmospheric particulate matter pollution is mainly caused by fine particulate matter. Analysis by SPSS software,there was a positive correlation between the SO₂,NO₂,CO,PM_2.5 and PM₁₀ concentrations. Negative correlations existed between the O₃ concentration and the NO₂,CO concentrations.更多还原