摘要
基于被动扩散采样技术,将泸州市全市区域按16km×16km间隔划分为38个网格,并开展了2011年3月～2012年2月期间大气污染物SO2、NO2监测工作.监测结果表明：泸州市SO2、NO2浓度季节变化规律均为：冬季＞秋季＞春季＞夏季;SO2的空间分布表明浓度较高的区域主要分布在南部和人口密度较大的城区及西北区域,NO2的空间分布表现出全市呈南部低、北部高的趋势.泸州市污染物空间分布特征与污染源分布格局以及主导风向有关,同时,泸州受区域外污染物的扩散迁移影响也较明显.
Based on the passive sampling method, the whole area of Luzhou City was divided into 38 units with 16kin 16km grid, and ambient SO2 and NO2 monitoring work were carried out during March 2011 to FebruaPy 2012. The results showed that tbe SO2 and NO2 concentration level were： winter 〉 autumn 〉 spring 〉 summer; the spatial distribution of SO2 showed higher concentrations in the distribution areas mainly in the southern area, the urban area with large population density, and the northwest area of Luzhou City; the spatial distribution of NO2 showed lower trend in the southern area, and higher trend in the northern area. The spatial characteristics of pollution in Luzhou City were related with the overall distribution pattern of pollution sources and dominant wind direction, meanwhile the impact of pollutant diffusion and migration outside the areas of Luzhou City was also obvious.
出处
《四川环境》
2014年第4期47-52,共6页
Sichuan Environment
关键词
泸州
SO2
NO2
时空分布
Luzhou
SO2
NO2
spatial and temporal distribution
