基于洛伦兹曲线的兰州市主城区不同粒径颗粒物空间分析  

A Spatial Analysis on Particulates in Different Sizes in the City Proper of Lanzhou Based on Lorenz Curve

作　　者：程慧波 齐欣宇 Cheng Huibo;Qi Xinyu(Gansu Provincial Environmental Monitoring Central Station, Lanzhou730000;College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000)

机构地区：[1]甘肃省环境监测中心站,兰州730000 [2]兰州大学资源环境学院,兰州730000

出　　处：《上海环境科学》2019年第2期59-61,67,共4页Shanghai Environmental Sciences

基　　金：国家自然科学基金,编号:21603090;中国博士后面上基金资助项目,编号:2015M512051

摘　　要：为研究兰州市主城区不同粒径颗粒物的空间分布,利用8 级Andersen 采样器模拟人的呼吸系统于2013 年春季和冬季分别对兰州大学本部6 号公寓楼下、天庆丽舍情园、天庆家园A 区、甘肃环境科技大厦、兰炼宾馆5 个采样点进行采样,通过空间洛伦兹曲线来研究8 级颗粒物在各个采样点的富集状况和其变化规律。结果表明:在春季,PM2.1-1.1 在兰州市主城区分布较为均匀,PM5.8-4.7 和PM4.7-3.3 的洛伦兹曲线距离绝对均匀线最远,在兰州市主城区分布较不均衡。兰州市主城区冬季不同粒径颗粒物的分布相比较春季而言,更为均匀。PM10.0-9.0 和PM9.0-5.8 在兰州市主城区的冬季分布最为均匀。To study the spatial distribution of particulates in different sizes in the city proper of Lanzhou, tests to simulate the human respiratory system were carried out by using eight-stage Andersen impactor to make sampling at five spots in the urban area in the spring and winter of 2013 respectively. Spatial Lorenz curve was used to study the collection and variation conditions of eight-staged particulates at different sampling spots. Results showed that the distribution of PM2.1 ~ 1.1 was relatively homogeneous in the city proper in the spring. The Lorenz curves of PM5.8 ~ 4.7 and PM4.7 ~ 3.3 lay the farthest away from the absolute uniform line, and their distribution in city proper was rather uneven. The distribution of particulates in different sizes in the city proper in the winter was comparatively more uniform than that in the spring, and especially PM10.0 ~ 9 and PM9.0 ~ 5.8 distributed the most evenly there in the winter.

关 键 词：颗粒物 粒径尺寸 空间分布 洛伦兹曲线 兰州市 

分 类 号：X831.01[环境科学与工程—环境工程]