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Atmosphere
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Reactive Nitrogen and Halogen in the Atmosphere
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Reactive Nitrogen and Halogen in the Atmosphere

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Air Quality".

Deadline for manuscript submissions: closed (31 January 2025) | Viewed by 4433

Special Issue Editor

Dr. Xiao Fu

E-Mail Website
Guest Editor
Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
Interests: emissions and impacts of reactive halogen and nitrogen; atmosphere–land–ocean interactions; atmospheric chemistry modelling; emission inventory; air pollution formation and control

Special Issue Information

Dear Colleagues,

Reactive nitrogen and halogen play important roles in atmospheric chemistry, and affect air pollution and the climate. For instance, reactive nitrogen and halogen significantly affect the atmosphere’s oxidizing capacity, which determines the removal of primary pollutants and the formation of secondary pollutants, as well as the lifetime of greenhouse gases (i.e., methane). In polluted regions particularly, reactive nitrogen and halogen species exhibit relatively higher abundances, and their impacts are more pronounced.

As reactive nitrogen and halogen are attracting increasing attention, this Special Issue aims to collect original research and review papers on the most recent findings on reactive nitrogen and halogen. It is particularly important for us to have a more in-depth understanding of atmospheric processes—including anthropogenic and natural emissions, and chemical transformation, transportation, and removal mechanisms—to better quantify the impacts of reactive nitrogen and halogen in the atmosphere. Studies containing field measurements, laboratory experiments, box/regional/global model simulations, remote sensing, and technological developments are welcome. Topics of interest include, but are not limited to, the following:

  • The emission sources of reactive nitrogen and halogen;
  • The atmospheric chemistry of reactive nitrogen and halogen;
  • The impacts of reactive nitrogen and halogen in the atmosphere;
  • The development of technology and methods for measuring and modelling reactive nitrogen and halogen.

Dr. Xiao Fu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atmosphere is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • reactive nitrogen
  • reactive halogen
  • anthropogenic and natural nitrogen sources
  • anthropogenic and natural halogen sources
  • atmospheric nitrogen chemistry
  • atmospheric halogen chemistry
  • reactive nitrogen impacts
  • reactive halogen impacts

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Published Papers (2 papers)

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Research

12 pages, 3905 KiB  
Article
Oxidation of Aminoacetaldehyde Initiated by the OH Radical: A Theoretical Mechanistic and Kinetic Study
by Ashraful Alam and Gabriel da Silva
Atmosphere 2024, 15(8), 1011; https://doi.org/10.3390/atmos15081011 - 21 Aug 2024
Cited by 1 | Viewed by 862
Abstract
Aminoacetaldehyde (glycinal, NH2CH2CHO) is a first-generation oxidation product of monoethanolamine (MEA, NH2CH2CH2OH), a solvent widely used for CO2 gas separation, which is proposed as the basis for a range of carbon capture [...] Read more.
Aminoacetaldehyde (glycinal, NH2CH2CHO) is a first-generation oxidation product of monoethanolamine (MEA, NH2CH2CH2OH), a solvent widely used for CO2 gas separation, which is proposed as the basis for a range of carbon capture technologies. A complete oxidation mechanism for MEA is required to understand the atmospheric transformation of carbon capture plant emissions, as well as the degradation of this solvent during its use and the oxidative destruction of waste solvent. In this study, we have investigated the •OH radical-initiated oxidation chemistry of aminoacetaldehyde using quantum chemical calculations and RRKM theory/master equation kinetic modeling. This work predicts that aminoacetaldehyde has a tropospheric lifetime of around 6 h and that the reaction predominantly produces the NH2CH2C•O radical intermediate at room temperature, along with minor contributions from NH2•CHCHO and •NHCH2CHO. The dominant radical intermediate NH2CH2C•O is predicted to promptly dissociate to NH2•CH2 and CO, where NH2•CH2 is known to react with O2 under tropospheric conditions to form the imine NH = CH2 + HO2. The NH2•CHCHO radical experiences captodative stabilization and is found to form a weakly bound peroxyl radical upon reaction with O2. Instead, the major oxidation product of NH2•CHCHO and the aminyl radical •NHCH2CHO is the imine NH = CHCHO (+HO2). In the atmosphere, the dominant fate of imine compounds is thought to be hydrolysis, where NH = CH2 will form ammonia and formaldehyde, and NH = CHCHO will produce ammonia and glyoxal. Efficient conversion of the dominant first-generation oxidation products of MEA to ammonia is consistent with field observations and supports the important role of imine intermediates in MEA oxidation. Full article
(This article belongs to the Special Issue Reactive Nitrogen and Halogen in the Atmosphere)
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12 pages, 5189 KiB  
Article
Quantifying Urban Daily Nitrogen Oxide Emissions from Satellite Observations
by Tao Tang, Lili Zhang, Hao Zhu, Xiaotong Ye, Donghao Fan, Xingyu Li, Haoran Tong and Shenshen Li
Atmosphere 2024, 15(4), 508; https://doi.org/10.3390/atmos15040508 - 21 Apr 2024
Cited by 2 | Viewed by 2961
Abstract
Urban areas, characterized by dense anthropogenic activities, are among the primary sources of nitrogen oxides (NOx), impacting global atmospheric conditions and human health. Satellite observations, renowned for their continuity and global coverage, have emerged as an effective means to quantify pollutant [...] Read more.
Urban areas, characterized by dense anthropogenic activities, are among the primary sources of nitrogen oxides (NOx), impacting global atmospheric conditions and human health. Satellite observations, renowned for their continuity and global coverage, have emerged as an effective means to quantify pollutant emissions. Previous bottom-up emission inventories exhibit considerable discrepancies and lack a comprehensive and reliable database. To develop a high-precision emission inventory for individual cities, this study utilizes high-resolution single-pass observations from the TROPOspheric Monitoring Instrument (TROPOMI) on the Sentinel-5 Precursor satellite to quantify the emission rates of NOx. The Exponentially Modified Gaussian (EMG) model is validated for estimating NOx emission strength using real plumes observed in satellite single-pass observations, demonstrating good consistency with existing inventories. Further analysis based on the results reveals the existence of a weekend effect and seasonal variations in NOx emissions for the majority of the studied cities. Full article
(This article belongs to the Special Issue Reactive Nitrogen and Halogen in the Atmosphere)
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