AI Article Synopsis
Article Abstract
Atmospheric ammonia (NH) and ammonium (NH) can substantially influence air quality, ecosystems, and climate. NH volatilization from fertilizers and wastes (v-NH) has long been assumed to be the primary NH source, but the contribution of combustion-related NH (c-NH, mainly fossil fuels and biomass burning) remains unconstrained. Here, we collated nitrogen isotopes of atmospheric NH and NH and established a robust method to differentiate v-NH and c-NH. We found that the relative contribution of the c-NH in the total NH emissions reached up to 40 ± 21% (6.6 ± 3.4 Tg N yr), 49 ± 16% (2.8 ± 0.9 Tg N yr), and 44 ± 19% (2.8 ± 1.3 Tg N yr) in East Asia, North America, and Europe, respectively, though its fractions and amounts in these regions generally decreased over the past decades. Given its importance, c-NH emission should be considered in making emission inventories, dispersion modeling, mitigation strategies, budgeting deposition fluxes, and evaluating the ecological effects of atmospheric NH loading.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9747788 | PMC |
| http://dx.doi.org/10.1038/s41467-022-35381-4 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Temporal variations in health risk indices and combustion-derived components of PM: Focus on terephthalate and levoglucosan.
Heliyon
November 2024
Department of Environmental Engineering, Mokpo National University, Muan, Republic of Korea.
This study evaluated the health risks and chemical composition of PM and PM in Incheon, South Korea, emphasizing the critical role of particle size in public health impacts. The average concentrations were 10.89 μg/m³ for PM and 8.
View Article and Find Full Text PDFCombustion-driven inorganic nitrogen in PM from a city in central China has the potential to enhance the nitrogen load of North China.
J Hazard Mater
November 2024
School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Yangtze River Delta Eco-Environmental Change and Management Observation and Research Station, Ministry of Science and Technology, Ministry of Education, Shanghai 200240, China. Electronic address:
Inorganic nitrogen (NH and NO) is a significant component of PM, influencing not only regional ecological systems but also on other regions through the migration of air masses. However, few studies have simultaneously investigated the sources of NH and NO, and their potential transport pathways remain poorly understood. Here, daily PM samples were collected in Jiaozuo, a key city in the air pollution transmission channel to the north China, from 1 September to 5 December, 2017.
View Article and Find Full Text PDFAssessing Best Practices in Natural Gas Production and Emerging CO Capture Techniques to Minimize the Carbon Footprint of Electricity Generation.
Environ Sci Technol
November 2024
Department of Mechanical Engineering, University of Sheffield, Sheffield S1 3JD, U.K.
Natural gas (NG) is expected to provide a substantial portion of electricity generation in many jurisdictions for the foreseeable future. Postcombustion carbon capture and storage (CCS) effectively abates direct CO emissions; however, indirect NG supply chain emissions in most jurisdictions are incompatible with climate change mitigation goals. This life cycle assessment evaluates specific opportunities to reduce the carbon footprint of combined cycle gas turbine (CCGT) generation with CCS using existing low-emission NG production practices, technologies, and processes combined with emerging CCS techniques to achieve high CO capture rates and mitigate startup emissions.
View Article and Find Full Text PDFTracking Source Variations of Inhalation Cancer Risks and Ozone Formation Potential in Hong Kong over Two Decades (2000-2020) Using Toxic Air Pollutant Monitoring Data.
Environ Health (Wash)
June 2024
Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 000000, China.
Toxic air pollutants (TAPs) are a class of airborne chemicals known or suspected to cause serious health issues. This study, applying positive matrix factorization and inhalation unit risk estimates of TAPs, quantifies the changes in significant sources contributing to inhalation cancer risks (ICRs) from 2000 to 2020 in Hong Kong, China. Total ICR decreased from 1701 to 451 cases per million between 2000-2004 and 2016-2020, largely attributed to the reduction in diesel particulate matter (DPM), gasoline and solvent use-related volatile organic compounds (VOCs), and coal/biomass combustion-related polycyclic aromatic hydrocarbons and metal(loid)s.
View Article and Find Full Text PDFGeneration, characterization, and toxicological assessment of reference ultrafine soot particles with different organic content for inhalation toxicological studies.
Sci Total Environ
November 2024
Joint Mass Spectrometry Center (JMSC) at Comprehensive Molecular Analytics (CMA), Helmholtz Zentrum München, Ingolstädter Landstrasse 1, D-85764 Neuherberg, Germany; Joint Mass Spectrometry Center (JMSC) at Chair of Analytical Chemistry, Institute of Chemistry, University of Rostock, Albert-Einstein-Strasse 27, D-18059 Rostock, Germany.
Ultrafine particles (UFP) are the smallest atmospheric particulate matter linked to air pollution-related diseases. The extent to which UFP's physical and chemical properties contribute to its toxicity remains unclear. It is hypothesized that UFP act as carriers for chemicals that drive biological responses.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!