长沙市郊区环境大气中颗粒物PM10的质量浓度及其变化特性

被引:22
作者
王琪
邓启红
唐猛
刘蔚巍
机构
[1] 中南大学能源科学与工程学院
关键词
空气质量; 颗粒物; PM10; PM2.5;
D O I
暂无
中图分类号
X513 [粒状污染物];
学科分类号
摘要
于2007-11—2008-10对长沙市郊区环境空气中的颗粒物PM10的质量浓度采用TEOM 1400a进行实时监测,以揭示城市颗粒物污染的主要特征及其变化趋势。研究结果表明:长沙市郊区颗粒物污染相当严重,PM10年平均质量浓度为(120.8±47.7)μg/m3,明显超出我国环境空气质量标准,其中秋、冬季节质量浓度高于夏季质量浓度;PM10质量浓度日变化受城市交通密度的影响显著,峰值分别出现于9:00与18:00附近,与早晚交通高峰期吻合;PM10质量浓度在工作日与周末存在明显差异,夏季周末质量浓度明显高于工作日质量浓度,而冬季则相反;颗粒物PM10与PM2.5质量浓度具有很好的相关性,说明我国现行采用的PM10环境空气质量标准评价城市空气质量仍是合适的。
引用
收藏
页码:2419 / 2423
页数:5
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