大连市区近地面臭氧污染规律研究及与PM2.5等污染物的相关性分析

2013年大连市区大气中臭氧日最大8小时平均值第90百分位为0.099毫克/立方米,符合二级标准（GB3095-2012）日最大8小时平均。点日最大8小时平均超标率为1.0%。春、秋两季的日最大8小时平均较大,但都符合二级标准,从月份变化看,5月的日最大8小时平均最高,12月最低,从24小时变化看,14时、15时和16时的臭氧均值最高,7时臭氧均值最低。从各点位变化看,傅家庄点位臭氧日最大8小时平均的第90百分位最高,双D港点位最低。大连市区臭氧与PM2.5和PM10的负相关性最好,相关系数均达到0.86以上,与二氧化氮、二氧化硫和一氧化碳也呈较好的负相关。

Study on Ozone in Dalian Urban and Correlation Between Ozone and PM2.5,other Pollutants

The pollutant level of ozone was analyzed from Dalian urban in 2013,the result showed the 90 th percentile of daily maximum 8-hour average ozone concentration was 0. 099 mg / m^3,it met the national secondary standard of daily maximum8-hour average ozone concentration（ GB3095-2012）. The nonattainment rate of daily maximum 8-hour average ozone concentrations in measuring sites was 1. 0 percent. The daily maximum 8-hour average ozone concentrations in spring and autumn were grater than those in summer and winter, and both of them met the national secondary standard. The daily maximum 8-hour average ozone concentrations appeared in May,while the minimum in December,the hourly maximum ozone concentrations were measured in rang from 14： 00 to 16： 00,while minimum in 7： 00. The 90 th percentile of daily maximum 8-hour average ozone concentration was on Fujianzhuang site, while minimum in Shuang Dgang. The negative correlation between ozone and PM2. 5,PM10 was significant,the correlation coefficients were greater than 0. 086,the negative correlation between ozone and other pollutant was good too.