DOI: 10.1016/j.atmosenv.2017.11.008
Scopus记录号: 2-s2.0-85034669986
论文题名: Changes in oxidative potential of soil and fly ash after reaction with gaseous nitric acid
作者: Zhan Y ; , Ginder-Vogel M ; , Shafer M ; M ; , Rudich Y ; , Pardo M ; , Katra I ; , Katoshevski D ; , Schauer J ; J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 173 起始页码: 306
结束页码: 315
语种: 英语
英文关键词: Acid aging
; Metals
; Mineral dust
; ROS activity
Scopus关键词: Atmospheric aerosols
; Atmospheric chemistry
; Calcium
; Chemical analysis
; Coal ash
; Fly ash
; Mass spectrometry
; Metals
; Minerals
; Nitric acid
; Soils
; X ray diffraction
; Crystalline minerals
; Gaseous nitric acid
; Mineral dust
; Mineralogical analysis
; Nitric acid solutions
; Oxidative potential
; Sector field inductively coupled plasma mass spectrometries
; Water soluble fraction
; Dust
; dithiothreitol
; nitric acid
; reactive oxygen metabolite
; aerosol
; bioassay
; chemical reaction
; concentration (composition)
; dust
; fly ash
; metal
; nitric acid
; oxidation
; reactive oxygen species
; temperature effect
; aerosol
; aging
; Article
; elemental analysis
; fly ash
; ion chromatography
; limit of detection
; mass spectrometry
; nonhuman
; oxidation reduction potential
; oxidative stress
; particulate matter
; priority journal
; room temperature
; secondary organic aerosol
; soil
; X ray diffraction
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The goal of this study was to examine the impact of simulated atmospheric aging on the oxidative potential of inorganic aerosols comprised primarily of crustal materials. Four soil samples and one coal fly ash sample were artificially aged in the laboratory through exposure to the vapor from 15.8 M nitric acid solution for 24 h at room temperature. Native and acid-aged samples were analyzed with a cellular macrophage and acellular dithionthreitol assays to determine oxidative potential. Additionally, the samples were analyzed to determine the concentration of 50 elements, both total and the water-soluble fraction of these elements by Sector Field Inductively Coupled Plasma Mass Spectrometry (SF-ICMS) and crystalline mineral composition using X-ray Diffraction (XRD). The results show that reactions with gaseous nitric acid increase the water-soluble fraction of many elements, including calcium, iron, magnesium, zinc, and lead. The mineral composition analysis documented that calcium-rich minerals present in the soils (e.g., calcite) are converted into different chemical forms, such as calcium nitrate (Ca(NO3)2). The nitric acid aging process, which can occur in the atmosphere, leads to a 200–600% increase in oxidative potential, as measured by cellular and acellular assays. This laboratory study demonstrates that the toxic effects of aged versus freshly emitted atmospheric dust may be quite different. In addition, the results suggest that mineralogical analysis of atmospheric dust may be useful in understanding its degree of aging. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83111
Appears in Collections: 气候变化事实与影响
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作者单位: University of Wisconsin—Madison, Department of Civil and Environmental Engineering, Water Science & Engineering Lab, 660 North Park Street, Madison, WI, United States; Wisconsin State Laboratory of Hygiene, University of Wisconsin-Madison, Madison, WI, United States; Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot, Israel; Department of Geography and Environmental Development, Ben-Gurion University of the Negev, Israel; Department of Environmental Engineering, Ben-Gurion University of the Negev, Israel
Recommended Citation:
Zhan Y,, Ginder-Vogel M,, Shafer M,et al. Changes in oxidative potential of soil and fly ash after reaction with gaseous nitric acid[J]. Atmospheric Environment,2018-01-01,173