气候变化领域集成服务门户(CCPortal): Atmospheric iron deposition in a megacity of northwest China: Solubility, speciation, and deposition fluxes

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DOI	10.1016/j.partic.2023.10.015
	Atmospheric iron deposition in a megacity of northwest China: Solubility, speciation, and deposition fluxes
	Yang, Xiaotao; Liu, Pingping; Xue, Zhiwei; Zhang, Hao; Li, Xuan; Xu, Hongmei; Shen, Zhenxing
发表日期	2024
ISSN	1674-2001
EISSN	2210-4291
起始页码	90
卷号	90
英文摘要	Atmospheric iron has crucial effects on biogeochemical cycles, atmospheric processing, global climate, and human health. In this study, atmospheric dustfall samples were collected from six functional areas in Xi'an, China, from 2020 to 2021. The spatiotemporal distributions and deposition fluxes of total and water-soluble (ws) Fe as well as the speciation and potential sources of ws-Fe were characterized. Industrial areas had the highest concentrations of total Fe and ws-Fe, which were mainly due to copious emissions of heavy metals during manufacturing. The total Fe concentrations peaked in spring, primarily due to the substantial input of crustal dust, which also led to the lowest Fe solubility in this season. By contrast, the highest levels of ws-Fe occurred during winter due to an increase in biomass combustion. Among the water-soluble forms, ws-Fe (II) was dominant and accounted for 74.8% of the total amount of ws-Fe. Crustal dust was the main contributor to total Fe, whereas biomass burning primarily contributed to peak ws-Fe concentrations. The average total and ws-Fe deposition fluxes in Xi'an were the highest in spring and lowest in autumn, which were related to the distributions of the dustfall deposition fluxes and their Fe contents during these periods. Our study provided a broader and comprehensive understanding of atmospheric iron deposition in Chinese urban area, which is of positive significance for understanding atmospheric chemistry and global climate change. (c) 2024 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
英文关键词	Atmospheric dustfall; Iron; Speciation distribution; Seasonal variation; Functional area; Sources
语种	英语
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Chemical ; Materials Science, Multidisciplinary
WOS记录号	WOS:001170858500001
来源期刊	PARTICUOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300028
作者单位	Xi'an Jiaotong University; Chinese Academy of Sciences; Institute of Earth Environment, CAS
推荐引用方式 GB/T 7714	Yang, Xiaotao,Liu, Pingping,Xue, Zhiwei,et al. Atmospheric iron deposition in a megacity of northwest China: Solubility, speciation, and deposition fluxes[J],2024,90.
APA	Yang, Xiaotao.,Liu, Pingping.,Xue, Zhiwei.,Zhang, Hao.,Li, Xuan.,...&Shen, Zhenxing.(2024).Atmospheric iron deposition in a megacity of northwest China: Solubility, speciation, and deposition fluxes.PARTICUOLOGY,90.
MLA	Yang, Xiaotao,et al."Atmospheric iron deposition in a megacity of northwest China: Solubility, speciation, and deposition fluxes".PARTICUOLOGY 90(2024).