The acidity of atmospheric particles and clouds
Acidity, defined as pH, is a central component of aqueous chemistry. In the atmosphere, the
acidity of condensed phases (aerosol particles, cloud water, and fog droplets) governs the …
acidity of condensed phases (aerosol particles, cloud water, and fog droplets) governs the …
Recent advances in understanding secondary organic aerosol: Implications for global climate forcing
Anthropogenic emissions and land use changes have modified atmospheric aerosol
concentrations and size distributions over time. Understanding preindustrial conditions and …
concentrations and size distributions over time. Understanding preindustrial conditions and …
Reactive nitrogen chemistry in aerosol water as a source of sulfate during haze events in China
Fine-particle pollution associated with winter haze threatens the health of more than 400
million people in the North China Plain. Sulfate is a major component of fine haze particles …
million people in the North China Plain. Sulfate is a major component of fine haze particles …
Highly acidic ambient particles, soluble metals, and oxidative potential: a link between sulfate and aerosol toxicity
Soluble transition metals in particulate matter (PM) can generate reactive oxygen species in
vivo by redox cycling, leading to oxidative stress and adverse health effects. Most metals …
vivo by redox cycling, leading to oxidative stress and adverse health effects. Most metals …
Rapid transition in winter aerosol composition in Beijing from 2014 to 2017: response to clean air actions
The clean air actions implemented by the Chinese government in 2013 have led to
significantly improved air quality in Beijing. In this work, we combined the in situ …
significantly improved air quality in Beijing. In this work, we combined the in situ …
Formation mechanisms of atmospheric nitrate and sulfate during the winter haze pollution periods in Beijing: gas-phase, heterogeneous and aqueous-phase …
P Liu, C Ye, C Xue, C Zhang, Y Mu… - … Chemistry and Physics, 2020 - acp.copernicus.org
A vast area in China is currently going through severe haze episodes with drastically
elevated concentrations of PM 2.5 in winter. Nitrate and sulfate are the main constituents of …
elevated concentrations of PM 2.5 in winter. Nitrate and sulfate are the main constituents of …
High aerosol acidity despite declining atmospheric sulfate concentrations over the past 15 years
Particle acidity affects aerosol concentrations, chemical composition and toxicity. Sulfate is
often the main acid component of aerosols, and largely determines the acidity of fine …
often the main acid component of aerosols, and largely determines the acidity of fine …
Fine-particle pH for Beijing winter haze as inferred from different thermodynamic equilibrium models
pH is an important property of aerosol particles but is difficult to measure directly. Several
studies have estimated the pH values for fine particles in northern China winter haze using …
studies have estimated the pH values for fine particles in northern China winter haze using …
Aerosol pH and its driving factors in Beijing
J Ding, P Zhao, J Su, Q Dong, X Du… - … Chemistry and Physics, 2019 - acp.copernicus.org
Aerosol acidity plays a key role in secondary aerosol formation. The high-temporal-
resolution PM 2.5 pH and size-resolved aerosol pH in Beijing were calculated with …
resolution PM 2.5 pH and size-resolved aerosol pH in Beijing were calculated with …
Aqueous-phase mechanism for secondary organic aerosol formation from isoprene: application to the southeast United States and co-benefit of SO2 emission …
Isoprene emitted by vegetation is an important precursor of secondary organic aerosol
(SOA), but the mechanism and yields are uncertain. Aerosol is prevailingly aqueous under …
(SOA), but the mechanism and yields are uncertain. Aerosol is prevailingly aqueous under …