摘要
对深圳市坪山区慢生活前后空气质量数据进行了评估分析。结果表明:慢生活期相较于正常生活期间,PM_(2.5)、PM_(10)、NO_(2)浓度降幅分别为26.0%、33.3%、44.4%,均显著高于全市平均降幅,反映正常生活期间辖区当地大气污染源排放对站点的影响程度高于全市平均水平;O_(3)浓度降幅为19.3%,受污染物传输影响,降幅略低于全市平均;SO_(2)、CO浓度持续保持较低水平,受污染物排放的影响不大。模型模拟结果也表明:随着慢生活期间机动车流量减少,其尾气对PM_(2.5)和NO_(2)浓度的一次贡献占比分别减少17.5%和21.2%。激光雷达监测表明,坪山子站颗粒物污染来源于上风向的传输及沉降。
The air quality data before and after the slow life in Pingshan District,Shenzhen City were evaluated and analyzed.The results show that,compared with the normal life period,the PM_(2.5),PM_(10),and NO_(2) concentrations decreased by 26.0%,33.3%,and 44.4%during the slow life period,which were significantly higher than the city's average decline,reflecting the impact of local air pollution source emissions on air stations and normal life is higher than the average level of the city;O_(3) concentration drops by 19.3%,which is slightly lower than the average level of the city due to pollutant transmission;The concentrations of SO_(2) and CO remain at a low level and are not affected by the pollutant emissions.The model simulation results show that with the reduction of motor vehicle flow during the slow life period,the primary contribution of exhaust gas to PM_(2.5) and NO_(2) concentrations decreases by 17.5%and 21.2%.Lidar monitoring shows that the particle pollution at Pingshan Station comes from the transmission and deposition in the upwind direction.
作者
安礼航
朱珠
田鹏山
An Lihang;Zhu Zhu;Tian Pengshan(Shenzhen Yuanqing Environmental Technology Service Co.,Ltd.,Shenzhen,Guangdong 518055,China)
出处
《绿色科技》
2023年第6期97-101,共5页
Journal of Green Science and Technology
关键词
慢生活
大气环境质量
大气污染
坪山区
slow life
atmospheric environment quality
air Pollution
Pingshan District
