京津冀区域颗粒物污染特征研究  

The Pollution Characteristics of Particulate Matter in Beijing-Tianjin-Hebei region

作　　者：古金霞 陈泽鑫 李琳希 霍光耀 裘珮雯 Gu Jinxia;Chen Zexin;Li Linxi;Huo Guangyao;Qiu Peiwen(School of Science,Tianjin Chengjian University,Tianjin 300384,China)

机构地区：[1]天津城建大学理学院,天津300384

出　　处：《南开大学学报（自然科学版）》2020年第5期26-32,共7页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：天津市自然科学基金项目(19JCYBJC23900)。

摘　　要：京津冀区域是我国环境空气污染频发的重点区域之一.基于中国空气质量在线监测分析平台实时发布的2019年京津冀区域六个典型城市的颗粒物质量浓度数据,分析京津冀区域颗粒物污染特征.结果表明:京津冀区域日均PM2.5质量浓度小于等于60μg/m3天数占全年的68.49%-80.00%;PM10质量浓度小于等于140μg/m3天数占全年的75.14%-93.70%;京津冀区域颗粒物质量浓度的月分布呈"V"型规律,颗粒物质量浓度冬季最高,秋季和春季次之,夏季最低;颗粒物质量浓度日变化呈双峰型且与人为活动作息时间保持良好的一致性;应用皮尔逊相关分析法探讨不同城市间颗粒物的相关性,总结为东南和西南两条典型的显著相关路径;应用线性回归方法评估PM2.5与PM10的相关性,同一城市的PM2.5与PM10显著相关;应用空间差异率方法分析京津冀区域不同城市间颗粒物质量浓度的差异程度,石家庄和其他城市间的颗粒物空间差异率最高;天津与唐山的PM2.5空间差异最低,其COD值为0.14;天津和廊坊的PM10的空间差异最小,其COD值为0.14.The Beijing-Tianjin-Hebei region is one of the key areas which frequently happen environmental air pollution in China. Based on the real-time data of particulate matter concentration in six typical cities in Beijing-Tianjin-Hebei region in 2019, the pollution characteristics of particulate matter were analyzed in Beijing-Tianjin-Hebei region. The results showed that, the days of daily average PM2.5 mass concentration less than or equal to 60 μg/m3 in Beijing-Tianjin-Hebei region accounted for 68.49%-80.00% of the whole year, the days of daily average PM10 mass concentration less than or equal to 140 μg/m3 in Beijing-Tianjin-Hebei region accounted for 75.14%-93.70% of the whole year. And the monthly distribution of particulate matter mass concentration in Beijing-Tianjin-Hebei region was "V" pattern, the highest value of particulate matter mass concentration was in winter, the second value was in autumn and spring, and the lowest value was in summer. The diurnal variation of particle mass concentration was bimodal and consistent with the time of human activity. Using Pearson correlation analysis method to explore the correlation of particulate matter between different cities, two typical significant correlation paths of southeast and southwest were summarized. Using linear regression method to evaluate the correlation between PM2.5 and PM10,the PM2.5 and PM10 in the same city were significantly correlated. Using the spatial difference rate method to analyze the difference degree of particulate matter mass concentration among different cities in BeijingTianjin-Hebei region, the highest value of spatial difference rate for particulate matter appeared between Shijiazhuang and other cities. The lowest value of space difference rate for PM2.5 appeared between Tianjin and Tangshan and its COD value was 0.14, and the space difference for PM10 between Tianjin and Langfang was the smallest and its value was 0.14.

关 键 词：京津冀区域 颗粒物 污染特征 

分 类 号：X51[环境科学与工程—环境工程]