摘要
2021年1月22—27日,辽阳市经历一次重度及以上污染过程,此次污染过程呈现持续时间长、污染物浓度高、污染范围广等特点,总体程度为轻—严重污染。截至27日,辽阳市出现4 d重度及以上污染(严重污染1 d),全市PM_(2.5)浓度均值由污染过程前的40μg/m^(3)上升至71μg/m^(3),直至27日上午污染过程结束。此次污染过程较重且较为典型,对辽阳市污染特征分析具有代表性意义。
On January 22-27,2021,Liaoyang experienced a heavy and above pollution process that lasted for a long time,had a high concentration of pollutants and had a wide range of pollution,with the overall degree of light to serious pollution.By the 27th,Liaoyang had four days of severe pollution(one day of severe pollution)and the average concentration of PM_(2.5) in the city had risen from 40μg/m^(3)before the pollution process to 71μg/m^(3)until the end of the pollution process in the morning of 27th.The pollution process was heavy and typical,which was representative for the analysis of pollution characteristics in Liaoyang city.
出处
《环境保护与循环经济》
2024年第2期84-87,共4页
environmental protection and circular economy
关键词
污染过程
污染特征
辽阳
pollution process
pollution characteristics
Liaoyang
