西南林业大学学报2017，Vol.37Issue(5)：135-140,6.DOI:10.11929/j.issn.2095-1914.2017.05.020
杭州市城区典型区域PM2.5和PM10质量浓度变化特征
Characteristics of Mass Concentration Variations of PM2.5 and PM10 in the Typical Urban Area of Hangzhou
摘要
Abstract
In order to study the variation characteristics of PM2.5 and PM10 concentrations in the urban area of Hangzhou, we monitored PM2.5, PM10 concentration and meteorological characteristics for 1 a in monitoring area of Caihe. The result showed that concentration of PM2.5 in winter and spring was higher than in summer and autumn, the max concentration in winter was 104. 35 ± 99. 86 mg/m3. The PM10 in winter was much higher than in other sea-sons, the concentration was 274. 39 ± 160. 92μg/m3 . The concentration in spring and autumn were twice that of summer. This shows that a PM10 particle has more diverse sources than PM2.5, more complex composition. They have different relative concentration and the change law of PM2.5 and PM10 in different season. The concentration di-urnal variation of PM have similar change process in different seasons, and the peak value decreased gradually in the observation period, the value varied with season. PM2.5/PM10 values range from 0. 26 to 0. 58, the mean value in winter and spring were 0. 51 and 0. 50, and were 0. 34 and 0. 32 in summer and autumn, respectively. It showed that PM2.5 in a high proportion of pollutants in summer and autumn. There was a significant negative correlation be-tween PM2.5 , PM10 concentration and temperature, and the correlation coefficients were 0. 619, 0. 640, respectively. The concentration of PM2.5 and PM10 has a significant positive correlation with atmospheric pressure, and the corre-lation coefficient was 0. 559 and 0. 583, respectively.关键词
PM2.5/PM10/质量/浓度/大气污染/杭州Key words
PM2.5/PM10/mass/concentration/atmospheric pollution/Hangzhou分类
农业科技引用本文复制引用
华锦欣,任晓旭,雷亦晨,胡俊靖,戎建涛,冯晓月,曹鸿景..杭州市城区典型区域PM2.5和PM10质量浓度变化特征[J].西南林业大学学报,2017,37(5):135-140,6.基金项目
杭州市社会发展科研攻关项目(20150533B12) 资助 （20150533B12）
杭州市财政专项项目"杭州城市森林保健功能监测与评价研究" 资助. （）
