潮州市城区大气颗粒物的移动监测与分析

Movement Monitoring and Analysis of Atmospheric Particulates in Urban Area of Chaozhou City

2020年9月、10月和11月利用车载Sniffer4D灵嗅大气移动监测设备对潮州市城区的大气颗粒物进行移动监测,分析了颗粒物的时空变化情况。结果表明,潮州市城区的PM_(2.5)日均浓度范围是15.80~60.80μg/m^(3),与潮州市国控站点相比偏高,但变化趋势基本一致;PM_(1.0)、PM_(2.5)和PM_(10)三者的日均浓度变化趋势高度相似,PM_(1.0)/PM_(2.5)比值在66%-74%之间,PM_(2.5)/PM_(10)比值在86%以上;城区PM_(2.5)的空间分布差异显著,路口、小巷子、施工区域、南堤路和绿榕南路等机动车车流多的地方,PM_(2.5)的浓度普遍偏高。

In September,October,and November 2020,the airborne particles in the urban area of Chaozhou City were monitored using the onboard Sniffer4D olfactory atmospheric mobile monitoring equipment,and the temporal and spatial changes of the particles were analyzed.The result showed that the daily average concentration of PM_(2.5) in the urban area of Chaozhou City ranged from 15.80 to 60.80μg/m^(3),slightly higher than that of the national control station in Chaozhou City,but the changing trend was generally the same.The average daily concentration trends of PM_(1.0),PM_(2.5),and PM_(10) were highly similar.The ratio of PM_(1.0)/PM_(2.5) was between 66%and 74%,and the ratio of PM_(2.5)/PM_(10 )was above 86%.In addition,the spatial distribution of PM_(2.5) in urban areas was significantly different.The concentration of PM_(2.5) was generally high at intersections,alleys,construction areas,Nandi Road,Lvrong South Road,and other places with a lot of motor vehicle traffic.