摘要
对2001年到2008年兰州、上海、广州、合肥、南京、长沙6个典型城市城区空气质量公报进行了分析,同时结合降水数据,分析了降水和颗粒物污染变化的规律。结果表明:6个城市的大气都有不同程度的污染,南方城市空气质量普遍优于西北内陆的城市,6个城市大气中的首要污染物是可吸入颗粒物(PM10),降水可以有效去除可吸入颗粒物(PM10)、二氧化硫(SO2)和二氧化氮(NO2)。2008年1月六个城市的空气质量优良天数比过去七年有一定程度的增加。
The urban air quality reports of six typical Hefei, Nanjing, Changsha ） from 2001 to 2008 were tures between particulate pollution and precipitation cities of China （ including Lanzhou, Shanghai, Guangzhou, analyzed. Based on the precipitation data, the change feawere summarized. The results showed that the ambient atmosphere of these cities was polluted in different levels. The air qualities of the southern cities were better than that of the northwestern inland cities in China. The principal pollutant of these typical cities was respirable particulate matter （PM10）. PM10, SO2 and NO2 can be wiped off by precipitation effectively. The days of excellent air quality of six cities had a certain increase compared with the past seven years.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2009年第12期43-48,共6页
Journal of Arid Land Resources and Environment
基金
国家重点基础研究发展计划项目(2006CB403701)
国家自然科学基金(40675077)资助
关键词
降水
空气质量
湿清除能力
precipitation
air quality
wet - eliminating capability
