摘要
根据《环境空气质量标准》(GB 3095-2012),环境空气污染物的基本项目有 6 种,即细颗粒物(PM2.5)、可吸入颗粒物(PM10)、CO、SO2、O3 和NO2.为了解老旧小区大气污染物的时空分布特征,以兰州市安宁区长风东苑小区为研究区,监测 6 种大气污染物,分析大气污染特征及影响因素.结果表明,小区主干道十字交叉口的污染物浓度高于主干道污染物浓度.老旧小区大气中,PM2.5、PM10 和CO浓度高值集中在 08:00-09:00.PM2.5、PM10、CO、SO2 和NO2 受车流量影响较大;O3 浓度与温度表现出强相关性;PM2.5、PM10、CO、SO2 和NO2 浓度与风速均呈负相关,O3 浓度与风速呈正相关.
Abstract
According to the Environmental Air Quality Standard(GB 3095-2012),there are six basic items of environmental air pollutants,namely fine particulate matter(PM2.5),inhalable particulate matter(PM10),CO,SO2,O3,and NO2.In order to understand the spatiotemporal distribution characteristics of air pollutants in old residential areas,Changfeng Dongyuan residential area in Anning district,Lanzhou city is taken as the research area to monitor six types of air pollutants and analyze the characteristics and influencing factors of air pollution.The results indicate that the pollutant concentration at the intersection of the main road in the community is higher than that on the main road.In the atmosphere of old residential areas,high concentrations of PM2.5,PM10,and CO are concentrated in 08:00-09:00.PM2.5,PM10,CO,SO2,and NO2 are greatly affected by traffic flow;O3 concentration shows a strong correlation with temperature;PM2.5,PM10,CO,SO2,and NO2 concentrations are negatively correlated with wind speed,while O3 concentration is positively correlated with wind speed.
国家科技期刊平台
NSTL
万方数据