基于日变化特征的珠江三角洲大气污染空间分布研究

发布时间：2018-05-26 04:27

本文选题：常规大气污染物 + 日变化　；参考：《中国环境科学》2017年06期

【摘要】：在传统的大气监测网络子站污染物浓度比较的基础上,结合其24h日变化的趋势分析,对珠江三角洲9个城市59个监测点位2013~2015年期间的CO、SO_2、NO_2、O_3、PM_(10)、PM_(2.5)数据进行了分析,以期更深入地揭示珠江三角洲大气污染的空间分布格局和来源特征.结果表明:CO、SO_2、NO_2、PM_(10)、PM_(2.5)主要污染区域集中在珠江三角洲西北部和中部地区,主要以广州和佛山两个城市为污染中心,受到本地源排放贡献较大;O_3污染分布较为复杂,四周污染浓度高,中部浓度低,但广州和东莞两地日变化差异显著,受到本地源影响大.分析显示,珠江三角洲大气污染具有显著的区域性特征,推荐广州天湖和珠海唐家分别作为珠江三角洲北部和东南部的区域污染监测点,能够较好地代表来自珠江三角洲北部的污染传输影响和珠江三角洲东南部的平均污染水平.
[Abstract]:On the basis of the comparison of the concentration of the pollutants in the traditional atmospheric monitoring network, combined with the trend analysis of 24h daily change, the data of CO, SO_2, NO_2, O_3, PM_ (10) and PM_ (2.5) of 59 monitoring points in 9 cities of the Pearl River Delta are analyzed in order to reveal the spatial distribution of air pollution in the Pearl River Delta. The results show that the main pollution areas of CO, SO_2, NO_2, PM_ (10) and PM_ (2.5) are concentrated in the northwest and central regions of the Pearl River Delta, mainly in two cities in Guangzhou and Foshan, which are mainly polluted by the local source, and the distribution of O_3 pollution is more complex, the concentration of the surrounding pollution is high, and the concentration in the central region is low, but Guangzhou and Dongguan The analysis shows that the atmospheric pollution in the Pearl River Delta has significant regional characteristics, and the Guangzhou Tian lake and the Zhuhai Tang family are recommended respectively as the regional pollution monitoring points in the northern and southeastern Pearl River Delta, which can better replace the pollution transmission effects from the Northern Pearl River Delta and the north of the Pearl River Delta. The average pollution level in the southeast of the Pearl River Delta.
【作者单位】：北京大学深圳研究生院城市人居环境科学与技术实验室;广东省环境监测中心;
【基金】：国家科技支撑项目(2014BAC21B03) 国家环保公益项目(201409009) 深圳市科技计划
【分类号】：X51

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