摘要
该文利用2018-2020年恩施市环境监测站同时段PM_(2.5)、PM_(10)、SO_(2)、NO_(2)、O_(3)、CO每日质量浓度监测资料,以及每日空气质量指数(AQI)资料,分析了近3年来恩施市的环境空气污染现状与成因。恩施州的主要污染物有PM_(2.5)、PM_(10)、O_(3),最高浓度可达到65.03、96.87、109.13μg/m^(3);恩施州空气质量指数为优、良、轻度污染、中度污染、重度污染的出现概率分别为50.69%、43.82%、4.57%、0.64%、0.27%,无严重以上污染日出现;气象条件对恩施州的空气质量有较大影响,PM_(2.5)浓度与月降水和月平均气温呈典型负相关,温度和降水量升值最高在7月时,PM_(2.5)的质量浓度降至最低11.61μg/m^(3)。研究发现,恩施州的空气质量变化程季节性变化,冬季空气质量最差,夏季最好;空气质量变化具有春节效应。结果可为恩施州的空气污染防治提供有效依据。
Based on the daily monitoring data of PM_(2.5),PM_(10),SO_(2),NO_(2),O_(3)and CO in Enshi Environmental Monitoring Station from 2018 to 2020,and the daily air quality index(AQI)data,we analyzed the present situation and causes of environmental air pollution of recent three years in Enshi City.In Enshi,the main pollutants are PM_(2.5),PM_(10)and O3,with the highest concentrations reaching 65.03μg/m^(3),96.87μg/m^(3)and 109.13μg/m^(3).The occurrence probability of Enshi Prefecture’s air quality index is excellent,good,light pollution,moderate pollution and severe pollution,which are 50.69%,43.82%,4.57%,0.64%and 0.27%,respectively,there is no serious pollution day.Meteorological conditions have a great influence on Enshi Prefecture’s air quality.Concentration of PM_(2.5)is negatively correlated with monthly precipitation and monthly average temperature.The temperature and precipitation rise at the highest in July,and the mass concentration of PM_(2.5)drops to the lowest of 11.61μg/m3.It is found that the air quality changes seasonally in Enshi city,and the air quality is the worst in winter and the best in summer.Changes in air quality has Spring Festival effect.This provides an effective basis for air pollution prevention and control in Enshi Prefecture.
作者
陈英
田海华
罗薇
倪裳
CHEN Ying;TIAN Haihua;LUO Wei;NI Shang(Enshi Ecological Environment Monitoring Center,Hubei Provincial Department of Ecology and Environment,Enshi 445000,China;Enshi City Environment Monitoring Station,Enshi 445000,China;School of Resources and Environment Engineering,Wuhan University of Technology,Wuhan 430070,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2021年第S01期199-202,共4页
Environmental Science & Technology
关键词
空气污染
特征
现状分析
气象条件
air quality
analysis of the situation
prevention and control measures
weather conditions
