广东不同环境大气污染特性比较  

Comparison of Air Pollution Properties among Diverse Environments in Guangdong

作　　者：岳玎利[1] 钟流举[1] 谢敏[1] 袁鸾[1] 张莹[1] 江明[1] 

机构地区：[1]广东省环境监测中心国家环境保护区域空气质量监测重点实验室,广东广州510308

出　　处：《环境监控与预警》2015年第5期45-51,共7页Environmental Monitoring and Forewarning

基　　金：国家自然科学基金资助项目(41303075);国家自然科学基金-广东联合基金资助项目(U1301234);广州市科技计划基金资助项目(201506010079)

摘　　要：利用2014年广东南岭背景站、天湖郊区站、磨碟沙城区站和受体区域桃源站SO2、NO2、PM10、O3、PM2.5与CO自动监测数据,分析不同环境大气污染特性。结果表明,4个站点的SO2、NO2、PM10与CO整体平均年均值较低,分别为14,28,59μg/m3和0.7 mg/m3;PM2.5整体平均值为36μg/m3,O3日最大8 h第90百分位数平均值为172μg/m3,二者高于国家二级标准限值。磨碟沙城区站和桃源站的污染物日变化规律较为明显,NO2、PM10和PM2.5在早晚交通高峰或紧接其后的时段出现峰值区。南岭背景站PM2.5质量浓度日间略高于夜间;O3未呈典型单峰分布,而是维持在较平稳、较高浓度水平。周末与工作日O3平均值的相对高低多与NO2、PM10和PM2.5的情况相反。4个站点O3日最大8 h值第90百分位数均未达标;南岭背景站和天湖郊区站O3值尤高,除10月外,在1月或6月也易出现O3高值。区域性的O3污染控制亟须深化开展。Based on the concentrations of SO2 ,NO2 ,PM10 ,O3 ,PM2.5 ,and CO automatically measured at Nanling background site, Tianhu suburban site,Modiesha urban site,and Taoyuan site in the downwind region in the year of 2014,the air pollution properties among diverse environments in Guangdong were analyzed.The results showed that the annual average concentrations of SO2 ,NO2 , PM10 ,and CO were low,which were 14,28,59 μg/m3 and 0.7 mg/m3 ,respectively.The annual average concentration of PM2.5 was 36 μg/m3 ,and the average 90th percentile values of daily maximum O3 which was 8 h concentrations was 172μg/m3 .Both of them exceeded the second grade limit of the national standards.Diurnal variation patterns of pollutants at Modiesha and Taoyuan were clear.NO2 ,PM10 and PM2.5 showed two peaks during or just after the morning and night rush hour.At Nanling the mass concentra-tions of PM2.5 during daytime were higher than those at night,and O3 kept at a stable high level without a typical unimodal distribution.The relative concentration level of O3 between the weekend and weekday was in contrary to those of NO2 ,PM10 and PM2.5 .The 90 th percentile values of daily maximum O3-8 h concentrations at the four sites violated the standards.The annual average O3 concentrations at Nanling and Tianhu were especially high,and they showed high O3 concentrations in January or June besides October. It suggested that O3 pollution control in a regional scale was in urgent need.

关 键 词：大气污染 不同环境 时间变化规律 臭氧 可入肺颗粒物 可吸入颗粒物 广东 

分 类 号：X823[环境科学与工程—环境工程]