Sources, Variations, and Effects on Air Quality of Atmospheric Ammonia

Current Pollution Reports, Год журнала: 2024, Номер 10(1), С. 40 - 53

Опубликована: Янв. 19, 2024

Язык: Английский

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Applications of environmental mass spectrometry in atmospheric haze chemistry

TrAC Trends in Analytical Chemistry, Год журнала: 2024, Номер 172, С. 117614 - 117614

Опубликована: Фев. 21, 2024

Язык: Английский

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Atmospheric reduced nitrogen: Sources, transformations, effects, and management

Journal of the Air & Waste Management Association, Год журнала: 2024, Номер 74(6), С. 362 - 415

Опубликована: Май 31, 2024

Human activities have increased atmospheric emissions and deposition of oxidized reduced forms nitrogen, but emission control programs largely focused on nitrogen. As a result, in many regions the world nitrogen are decreasing while increasing. Emissions originate from livestock waste fertilizer application, with contributions transportation sources urban areas. Observations suggest discrepancy between trends U.S., likely due to an underestimate emissions. In atmosphere, ammonia reacts oxides sulfur form fine particulate matter that impairs health visibility affects climate forcings. Recent reductions limited partitioning ammonia, long-range transport. Continuing research is needed improve understanding how shifting alter formation secondary particulates patterns transport reactive Satellite remote sensing has potential for monitoring concentrations there remains need maintain strengthen ground-based measurements continue development chemical models. Elevated decreased plant soil microbial biodiversity altered biogeochemical function terrestrial, freshwater, coastal ecosystems. Further study differential effects versus pathways timescales ecosystem recovery elevated deposition. Decreases could alleviate exceedances critical loads terrestrial freshwater indicators U.S. The Environmental Protection Agency should consider using as basis setting standards protect public welfare other countries might look European experience approaches agricultural sectors.

Язык: Английский

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Unveiling the Drivers of Cloud Condensation Nuclei Activity: Chemical Transformations and Biomass Burning over Rural India

Aerosol Science and Engineering, Год журнала: 2025, Номер unknown

Опубликована: Март 25, 2025

Язык: Английский

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High-Resolution Mass Spectrometry Characterization of Secondary Organic Aerosol Formation: Comparative Effects of NH3 on Biotic and Abiotic Precursors

Environmental Pollution, Год журнала: 2025, Номер 380, С. 126526 - 126526

Опубликована: Май 27, 2025

Язык: Английский

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Contribution of chemical composition to oxidative potential of atmospheric particles at a rural and an urban site in the Po Valley: Influence of high ammonia agriculture emissions

Atmospheric Environment, Год журнала: 2023, Номер 318, С. 120203 - 120203

Опубликована: Ноя. 17, 2023

Язык: Английский

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Combined Smog Chamber/Oxidation Flow Reactor Study on Aging of Secondary Organic Aerosol from Photooxidation of Aromatic Hydrocarbons

Environmental Science & Technology, Год журнала: 2023, Номер 57(37), С. 13937 - 13947

Опубликована: Сен. 11, 2023

Secondary organic aerosol (SOA) is a significant component of atmospheric fine particulate matter (PM2.5), and their physicochemical properties can be significantly changed in the aging process. In this study, we used combination consisting smog chamber (SC) oxidation flow reactor (OFR) to investigate continuous process gas-phase intermediates SOA formed from photooxidation toluene, typical aromatic hydrocarbon. Our results showed that as OH exposure increased 2.6 × 1011 6.3 molecules cm-3 s (equivalent time 2.01-4.85 days), mass concentration (2.9 ± 0.05-28.7 0.6 μg cm-3) corrected yield (0.073-0.26) were enhanced. As proceeds, acids multiple oxygen-containing products are continuously produced photochemical (mainly semi-volatile intermediate volatility species, S/IVOCs). The multigeneration then partition phase, while functionalization rather than fragmentation dominated process, resulting much higher after compared SC. study indicates yields function should considered air quality models improve simulation, thus accurately assess impact on regional quality.

Язык: Английский

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Atmospheric reactive nitrogen conversion kicks off the co-directional and contra-directional effects on PM2.5-O3 pollution

Journal of Hazardous Materials, Год журнала: 2024, Номер 478, С. 135558 - 135558

Опубликована: Авг. 16, 2024

Язык: Английский

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Characteristics of secondary aerosol formation during shortened multiday reaction experiments in a smog chamber: Effects of relative humidity and ammonia

The Science of The Total Environment, Год журнала: 2024, Номер 954, С. 176740 - 176740

Опубликована: Окт. 8, 2024

Shortened multiday reaction experiments were conducted using the KIST chamber for atmospheric processes simulation (K-CAPS) to characterize effects of ammonia (NH

Язык: Английский

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Insight into wet scavenging effects on sulfur and nitrogen containing organic compounds in urban Beijing

npj Climate and Atmospheric Science, Год журнала: 2024, Номер 7(1)

Опубликована: Сен. 4, 2024

Язык: Английский

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