Particle size characteristics of source apportionment and chemical composition of atmospheric dustfall in Taiyuan

被引：0

作者：

Tian, Xiao ^{[1
]}

Xie, Yu-Qi ^{[2
]}

Xu, Bo ^{[1
]}

Wei, Yu-Ting ^{[1
]}

Xu, Han ^{[1
]}

Zhang, Zhong-Cheng ^{[1
]}

Feng, Yin-Chang ^{[1
]}

Shi, Guo-Kiang ^{[1
]}

机构：

[1] State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, CMA-NKU Cooperative Laboratory for Atmospheric Environment-Health Research, College of Environmental Science and Engineering, Nankai Uni

[2] Taiyuan Ecological Environment Bureau, Taiyuan,030002, China

来源：

Zhongguo Huanjing Kexue/China Environmental Science | 2023年 / 43卷 / 06期

关键词：

Atmospheric dustfall - Chemical compositions - Distribution characteristics - Dustfall - Monitoring stations - Particle size characteristic - Particles sizes - Receptor modeling - Size-distribution - Source apportionment;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

This study collected dustfall samples at 8 monitoring stations in Taiyuan from November 2019 to December 2020 and analyzed their chemical compositions, size distributions, and source characteristics. The key results are shown as follows. First, the particle size of dustfall was significantly affected by the sampling area, larger at the southern stations and smaller at northern stations. The particle size was also generally larger in autumn and winter, linked to the spatial-temporal characteristics of the dustfall sources in Taiyuan. In addition, the chemical components of dustfall with different particle sizes were obviously different in various spatial-temporal conditions, especially for OC, SO42- and inorganic elements such as Ca, Si, Fe, etc. According to the results from the receptor models, urban dust contributed greater to dustfall with different sizes in Taiyuan (33.7%~37.5%). Meanwhile, construction dust (21.8%~31.6%) and steel industry (5.1%~18.1%) contributed significantly to medium and large particle size dustfall. The influence of coal combustion (14.1%~22.6%) to small size dustfall could not be ignored. © 2023 Chinese Society for Environmental Sciences. All rights reserved.

引用

页码：2755 / 2762