|关键词: 春节 烟花爆竹 空气质量 气象条件 可入肺颗粒物 可吸入颗粒物 湖南
|Air Quality Characteristics in Hunan Province during Spring Festival in 2017
ZHANG Qin，LIU Yanyan，PENG Qingqing，LI Wei，LUO Yueping1,2,3
1.Hunan Environmental Monitoring Center，Changsha,Hunan 410019，China;2.National Environmental Protection Key Laboratory of Heavy Metal Pollution Monitoring，Changsha,Hunan 410019，China;3.Hunan Meteorological Observatory，Changsha,Hunan 410118，China
|The air quality of Hunan Province during Spring Festival (from January 27 to January 28 in 2017 )was analyzed in this paper.The results showed that the fireworks resulted in severe air pollution in a short time which had a significant impact on PM10and PM2.5,followed by SO2,and minimum effect on NO2and O2relatively.The hourly average concentration of PM10 and PM2.5 and growth multiples all could be influenced by setting of firecrackers.The maximum value of hourly concentration of PM10 and PM2.5 were 195 ~ 652 μg/m3 and 116~680 μg/m3， respectively. The maximum growth multiples of PM10 and PM2.5 were 1.8~10.5 times and 2.2~15.8 times, respectively. Chenzhou had been the most affected city among 14 cities in our province.At the meanwhile,the ratio of ρ（PM2.5）/ρ（PM10） increased significantly,and the maximum ratio of ρ（PM2.5）/ρ（PM10） was 0.69 at 01:00 a.m.on Lunar New Years day. Weather conditions were also the key factors affecting the air quality during the Spring Festival.The adverse weather conditions such as small wind speed, strong temperature resistance, high humidity and no precipitation made the concentration of pollutants accumulate continuously and formed a continuous pollution process.
|Key words: pring festival Fireworks Air quality Weather conditions PM2.5 PM10 Hunan