摘要
利用珠江三角洲(简称珠三角)58个监测点位2013—2015年的CO、SO_2、NO_2、O_3、PM_(10)、PM_(2.5)浓度数据,对珠三角PM_(2.5)高污染天气的污染物分布特征进行研究,以期更深入地揭示珠三角PM_(2.5)的污染特征。结果表明:珠三角PM_(2.5)高污染天气主要发生在秋季(10月)和冬季(1月、12月);相对于冬季,秋季珠三角大气污染光化学反应更活跃;秋季珠三角PM_(2.5)高污染天气由一次污染和二次污染同步加强导致,污染防治难度大;冬季珠三角大气污染体现了高污染区域传输影响的特征,PM_(2.5)污染由高污染区域传输背景下的本地污染积累加强导致,佛山和广州一带尤为明显,是重点防治地区。
The concentration of CO,SO2 ,NO2 ,O3 ,PM10 and PM2.5 at 58 monitoring sites in Pearl River Delta during 2013-2015 was collected,and the spatial distribution of pollutants in high PM2.5 polluted days was analyzed so as to deeply reveal the PM2.5 pollution characteristics in Pearl River Delta. The results showed that the high PM2.5 polluted days mainly occurred in autumn （October） and winter （December and January）. Compared with winter, the photochemical reaction was more active in autumn. The primary pollution and secondary pollution increased together resulted in the high pollution of PM2.5 in autumn, so it was difficult to govern and prevent the PM2.5 pollution. The PM2.5 transmission from northern district was obvious in winter, and high PM2.5 pollution was caused by the accumu- lation at local sources under the background of high transmission from northern district, especially in Foshan and Guangzhou,which needed to be paid more attention to control.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2017年第10期1088-1091,共4页
Environmental Pollution & Control
基金
国家科技支撑计划项目(No.2014BAC21B03)
国家环境保护公益性行业科研专项(No.201409009)
深圳市科技计划项目
关键词
PM2.5
超标空间分布珠江三角洲
PM2.5
exceed standard
spatial distribution
Pearl River Delta
