Impact of city lockdown on the air quality of COVID-19-hit of Wuhan city

The Science of The Total Environment, Journal Year: 2020, Volume and Issue: 742, P. 140556 - 140556

Published: June 30, 2020

Language: Английский

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Refining δ15N isotopic fingerprints of local NO for accurate source identification of nitrate in PM2.5

Environment International, Journal Year: 2025, Volume and Issue: 196, P. 109317 - 109317

Published: Feb. 1, 2025

Stable nitrogen isotopic composition (δ15N) has proven to be a valuable tool for identifying sources of nitrates (NO3-) in PM2.5. However, the absence systematic study on δ15N values domestic NOx hinders accurate identification NO3- China. Here, we systematically determined and refined six categories Tianjin using an active sampling method. Moreover, PM2.5 were measured during pre-heating, mid-heating late-heating periods, which are most heavily polluted Tianjin. The results indicate that fingerprints types indicative regional characteristics China, particularly North China Plain. Bayesian isotope mixing (MixSIAR) model demonstrated coal combustion, biomass burning, vehicle exhaust collectively contributed more than 60 %, dominating periods failure consider signatures local could result overestimation contribution from natural gas combustion. Additionally, industrial sources, uncharacterized source previous studies, may directly fraction other being overestimated by 10 %. Notably, as number input increased, various was becoming stable, inter-influence between significantly reduced. This fingerprint effectively distinguish NO3-, thereby providing insights controlling pollution.

Language: Английский

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Air Quality and Climate Impacts of Biomass Use as an Energy Source: A Review

Energy & Fuels, Journal Year: 2021, Volume and Issue: 35(18), P. 14213 - 14240

Published: July 20, 2021

Commitments made to meet the goals of Paris Agreement, and need develop low carbon sources power heat, are likely lead continued or even increased use biomass as an energy source. Biomass is already replacing coal within large scale electricity generation systems. At smaller scales it utilized combined heat systems, well domestically for provision heat. Unabated, combustion leads a range pollutant emissions, including CO, CO2, methane, black organic carbon, which relevance from climate perspective, particulate matter, nitrogen oxides, volatile compounds, dioxins, furans precursors ozone, secondary aerosols, impact on air quality (AQ) human health. Epidemiological data suggests that smoke contributes at least 40 000 premature deaths per year in Europe, negatively affecting respiratory cardiovascular Hence, if be used future source, its AQ impacts addressed. Here, short review provided potential direct solid fuel This provides brief summary chemical physical characteristics emissions utilization provision. The burning ambient health (in particular fine particulates) addressed both outdoor indoor environments industrialized developing countries. Issues appliance scale, how these influence available mitigation options, factors, regulatory limits combustors, discussed. Final perspectives offered, point view "win–win" strategies minimize impacts.

Language: Английский

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Nitrogen isotopic composition of NOx from residential biomass burning and coal combustion in North China

Environmental Pollution, Journal Year: 2022, Volume and Issue: 304, P. 119238 - 119238

Published: March 31, 2022

Language: Английский

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Nitrogen and oxygen isotope characteristics, formation mechanism, and source apportionment of nitrate aerosols in Wuhan, Central China

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 921, P. 170715 - 170715

Published: Feb. 6, 2024

Language: Английский

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Using sulfur isotopes to constrain the sources of sulfate in PM2.5 during the winter in Jiaozuo City

Atmospheric Environment, Journal Year: 2024, Volume and Issue: 332, P. 120618 - 120618

Published: May 31, 2024

Language: Английский

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Nitrate-nitrogen transport in streamwater and groundwater in a loess covered region: Sources, drivers, and spatiotemporal variation

The Science of The Total Environment, Journal Year: 2020, Volume and Issue: 761, P. 143278 - 143278

Published: Oct. 29, 2020

Language: Английский

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Changes in nitrate accumulation mechanisms as PM2.5 levels increase on the North China Plain: A perspective from the dual isotopic compositions of nitrate

Chemosphere, Journal Year: 2020, Volume and Issue: 263, P. 127915 - 127915

Published: Aug. 24, 2020

Language: Английский

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Quantifying major NOx sources of aerosol nitrate in Hangzhou, China, by using stable isotopes and a Bayesian isotope mixing model

Atmospheric Environment, Journal Year: 2020, Volume and Issue: 244, P. 117979 - 117979

Published: Oct. 4, 2020

Language: Английский

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Diesel vehicle emission accounts for the dominate NO source to atmospheric particulate nitrate in a coastal city: Insights from nitrate dual isotopes of PM2.5

Atmospheric Research, Journal Year: 2022, Volume and Issue: 278, P. 106328 - 106328

Published: July 7, 2022

Language: Английский

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