临沂市秋季大气污染物高浓度时段分布特征研究

Study on Temporal Distribution of Atmospheric Pollution Concentration in Autumn of Linyi

通过分析临沂市秋季大气污染物高浓度时段分布,找出主要贡献的站点以及产生原因。结果表明:(1)在秋季,PM10,PM2.5,CO和SO2都是在上午8时到11时分别达到了浓度最高值,分别为127.89μg/m^3、68.71μg/m^3、1.1 mg/m 3和15μg/m^3。NO 2浓度在22时达到浓度最高值,为56.59μg/m^3。O 3的浓度最高值出现在15时,为115.39μg/m^3。(2)各站点对全市各指标的贡献不同,应对各指标较多时段(20小时及以上)浓度超过全市平均值的站点及时关注并严格管控。(3)加强对扬尘的源头治理。

By analyzing the temporal distribution of high-concentration atmospheric pollutants in autumn in Linyi City,this paper finds out the main contributing stations and the reasons.The results showed that:(1)In the autumn,PM10,PM2.5,CO,and SO2 all reached the highest concentration values from 8 AM to 11 AM,which were 127.89μg/m 3,68.71μg/m 3,and 1.1 mg/m 3,and 15μg/m^3,respectively.The concentration of NO2 reached the highest value at 22 pm,which was 56.59μg/m 3.The highest value of O 3 concentration appeared at 15 when it was 115.39μg/m 3.(2)The contribution of each site to the city s various indicators is different,and stations with concentrations that exceed the city s average over a period of time(20 hours and above)should be closely followed and strictly controlled.(3)It is suggested to strengthen the source control of flying dust.