长株潭城市环境空气中PM_(2.5)和O_3质量浓度的相关性研究Correlation study on PM_(2.5) and O_3 mass concentrations in ambient air by taking urban cluster of Changsha,Zhuzhou and Xiangtan as an example
罗岳平;刘孟佳;甘杰;周湘婷;蒋敏;杨仁斌;
摘要(Abstract):
PM2.5与O3均为导致城市环境空气质量恶化的主要污染物,采用自动设备监测湖南省长沙、株洲、湘潭3市商业区和郊区空气中的PM2.5和O3质量浓度,并对数据进行相关性分析。结果表明:PM2.5和O3质量浓度的季节性变化大,其中O3质量浓度夏、秋2季高,春、冬2季低;PM2.5则秋、冬2季高,春、夏2季低;O3质量浓度峰值一般出现在当天午后,PM2.5质量浓度峰值一般出现在上午;空间分布上,O3质量浓度在郊区站点相对较高,而PM2.5质量浓度在商业区站点较高。PM2.5与O3质量浓度变化以负相关为主,即PM2.5质量浓度高时,O3质量浓度则低,反之亦然,二者一般不产生叠加污染。总体上,夏、秋季节应主要防O3污染,春、冬季节则主要防PM2.5污染。
关键词(KeyWords): 环境学;相关性分析;城市环境空气质量;PM2.5;O3
基金项目(Foundation): 2014年湖南省社科基金重大招标项目(14DA12);; 环保公益性行业科研专项(201509019)
作者(Authors): 罗岳平;刘孟佳;甘杰;周湘婷;蒋敏;杨仁斌;
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