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被动采样监测珠江三角洲NOx、SO2和O3的空间分布特征
引用本文:赵阳,邵敏,王琛,王伯光,陆思华,钟流举.被动采样监测珠江三角洲NOx、SO2和O3的空间分布特征[J].环境科学,2011,32(2):324-329.
作者姓名:赵阳  邵敏  王琛  王伯光  陆思华  钟流举
作者单位:1. 北京大学环境科学与工程学院,环境模拟与污染控制国家重点联合实验室,北京,100871
2. 暨南大学环境工程系,广州,510632
3. 广东省环境监测中心,广州,510030
基金项目:国家高技术研究发展计划(863)项目(2006AA06A309)
摘    要:为获得珠江三角洲区域污染特征,采用被动扩散采样技术,在珠江三角洲200 km×200 km网格区域内测量11月两周暴露的NO2、SO2和O3浓度水平,采用克里格空间插值法(Kriging)获取NOx、SO2和O3的空间分布特征,并与源清单和已有模型结果比对.采用反向轨迹方法模拟了O3的输送途径.结果表明,采样期间珠江三...

关 键 词:被动采样  氮氧化物  二氧化硫  臭氧  珠江三角洲  空间分布  反向轨迹
收稿时间:2010/2/21 0:00:00
修稿时间:4/4/2010 12:00:00 AM

Characterizing Spatial Patterns of NOx, SO2,. and O3 in Pearl River Delta by Passive Sampling
ZHAO Yang,SHAO Min,WANG Chen,WANG Bo-guang,LU Si-hua and ZHONG Liu-ju.Characterizing Spatial Patterns of NOx, SO2,. and O3 in Pearl River Delta by Passive Sampling[J].Chinese Journal of Environmental Science,2011,32(2):324-329.
Authors:ZHAO Yang  SHAO Min  WANG Chen  WANG Bo-guang  LU Si-hua and ZHONG Liu-ju
Affiliation:State Joint Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. yangz93@gmail.com
Abstract:Concentrations of NO(x), SO2 and O3 were measured by passive sampling within 200km x 200km grid in Pearl River Delta (PRD). Sampling period was two weeks in November, 2009. Spatial distributions of NO(x), SO2 and O3 were obtained by Kriging interpolation method. The results were compared with emission inventories and modeling results. The transportations of O3 were evaluated by using backward trajectories of air parcels. During the sampling period, the mean concentrations of NO(x), SO2 and O3 were 75.9 microg/m3, 37.3 microg/m3 and 36.2 microg/m3, respectively. And the highest concentrations of NO(x), SO2 and O3 were 195.7 microg/m3, 95.9 microg/m3 and 81.8 microg/m3. Comparing with routine measurements from the regional monitoring network in PRD, the results by passive method were 18.6%, 33.5% and 37.5% lower for NO(x), SO2 and O3, respectively. The spatial patterns demonstrated that higher NO(x) concentrations often appeared in cities such as Guangzhou, Foshan and Shenzhen. SO2 concentrations were higher in west and lower in east. High SO2 concentrations are mainly from emission of power plants and industrial sources. Concentrations of O3 showed the highest levels in the south of PRD. Backward trajectory analysis for higher ozone areas indicated that 53% of the air masses were from the region with high concentration of NO(x). The horizontal transportation caused higher ozone in the south while lower in north in PRD.
Keywords:passive sampler  NOx  SO2  O3  Pearl River Delta  spatial distribution  backward trajectory
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