Themed collection Atmospheric chemistry
Atmospheric sea-salt and halogen cycles in the Antarctic
Atmospheric sea-salt and halogen cycles play important roles in atmospheric science and chemistry including cloud processes and oxidation capacity in the Antarctic troposphere.
A review of aerosol chemistry in Asia: insights from aerosol mass spectrometer measurements
Aerosol mass spectrometer has been widely deployed in Asia for real-time characterization of aerosol chemistry, and has significantly improved our understanding of the sources, properties, and formation processes of aerosols in a complex environment.
The atmospheric chemistry of indoor environments
The review article summarizes the wide variety of atmospheric chemistry phenomena that occur indoors.
Illuminating the dark side of indoor oxidants
A review of the current understanding of oxidants and their precursors in indoor environments.
Modelling consortium for chemistry of indoor environments (MOCCIE): integrating chemical processes from molecular to room scales
We report on the development of a modelling consortium for chemistry in indoor environments that connects models over a range of spatial and temporal scales, from molecular to room scales and from sub-nanosecond to days, respectively.
Overview on the spatial–temporal characteristics of the ozone formation regime in China
Ozone (O3), a main component in photochemical smog, is a secondary pollutant formed through complex photochemical reactions involving nitrogen oxides (NOx) and volatile organic compounds (VOCs).
Isocyanic acid (HNCO) and its fate in the atmosphere: a review
Isocyanic acid (HNCO) has recently been identified in ambient air at potentially concerning concentrations for human health. Since its first atmospheric detection, significant progress has been made in understanding its sources and sinks.
Geochemical characteristics of rare earth elements in windowsill dust in Baotou, China: influence of the smelting industry on levels and composition
Smelting is one of the main sources of rare earth elements (REEs) in large scale smelting regions that have been neglected before.
Emerging investigator series: heterogeneous OH oxidation of primary brown carbon aerosol: effects of relative humidity and volatility
Changes in the composition and absorptivity of primary brown carbon aerosol generated from smoldering pine were measured during exposure to hydroxyl radical in a photo-reaction chamber.
Secondary organic aerosol tracers and related polar organic compounds between urban and rural areas in the Eastern Mediterranean region: source apportionment and the influence of atmospheric oxidants
The formation, abundance and sources of secondary organic aerosol markers and other related polar organic species were investigated at two Eastern Mediterranean sites.
Seasonal variability of trace elements in fine particulate matter (PM2.5) in a coastal city of northern Poland – profile analysis and source identification
A large group of trace elements (Al, As, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Ti, V, Zn) was measured for the first time in 226 air samples collected at the coastal monitoring station in Gdynia (northern Poland), in the period from January 12th to August 30th, 2019.
Indoor aerosol water content and phase state in U.S. residences: impacts of relative humidity, aerosol mass and composition, and mechanical system operation
Hygroscopic particulate matter constituents promote uptake of aerosol water, depending on relative humidity, which can constrain qualities such as organic aerosol phase state and inorganic aerosol deliquescence and efflorescence.
Evidence for brown carbon absorption over the Bay of Bengal during the southwest monsoon season: a possible oceanic source
Light-absorbing brown carbon aerosols can have a marine origin over the coastal oceans and are likely associated with the sea salt component emitted from the ocean surface – significantly contributes to aerosol radiative forcing.
Photodecay of guaiacol is faster in ice, and even more rapid on ice, than in aqueous solution
Guaiacol photodegradation rate constants in solution, liquid-like regions in ice (frozen solutions), and at the air–ice interface (vapor-deposited to snow).
Reconciling atmospheric water uptake by hydrate forming salts
Magnesium and calcium chloride salts contribute to the global atmospheric aerosol burden via emission of sea spray and mineral dust.
Metallic elements and Pb isotopes in PM2.5 in three Chinese typical megacities: spatial distribution and source apportionment
Heavy metal pollution in fine particulate matter (PM2.5) is a serious environmental and health concern in China, particularly during winter.
Secondary organic aerosol formation from evaporated biofuels: comparison to gasoline and correction for vapor wall losses
With an ongoing interest in displacing petroleum-based sources of energy with biofuels, we measure and model the formation and composition of secondary organic aerosol (SOA) from organic compounds present in biofuels.
Determination of oxoanions and water-soluble species of arsenic, selenium, antimony, vanadium, and chromium eluted in water from airborne fine particles (PM2.5): effect of acid and transition metal content of particles on heavy metal elution
Leaching of toxic heavy metal oxoanions from PM2.5 is related to acids and transition metals of PM2.5.
A theoretical investigation on the atmospheric degradation of the radical: reactions with NO, NO2, and NO3
The mechanisms of with NO, NO2, and NO3 were studied to reveal the atmospheric fate of , comprehensively.
Identifying patterns and sources of anthropogenic trace metals in the Argentine Central Andes by using snow samples and an atmospheric dispersion model
This study presents the first local measurements of metals in snow from the Argentine Central Andes.
Trichloroacetyl chloride, CCl3COCl, as an alternative Cl atom precursor for laboratory use and determination of Cl atom rate coefficients for n-CH2CH(CH2)xCN (x = 3–4)
Investigation of CCl3COCl as a Cl atom precursor for laboratory use in (relative) rate and product.
Emerging investigator series: influence of marine emissions and atmospheric processing on individual particle composition of summertime Arctic aerosol over the Bering Strait and Chukchi Sea
Composition of individual atmospheric particles reveals the influence of marine sources, terrestrial sources, and anthropogenic sources on atmospheric chemistry in the changing Alaskan Arctic.
Integrated experimental and theoretical approach to probe the synergistic effect of ammonia in methanesulfonic acid reactions with small alkylamines
Particle formation from methanesulfonic acid–amine multicomponent systems is investigated using a combined experimental and theoretical approach.
A global atmospheric chemistry model for the fate and transport of PFCAs and their precursors
Global model for the atmospheric chemistry of PFCA precursors.
Evidence for a kinetically controlled burying mechanism for growth of high viscosity secondary organic aerosol
The incorporation of organic nitrates into viscous secondary organic aerosol during particle formation is enhanced relative to expected equilibrium partitioning, and is best described by a kinetically controlled “burying” mechanism.
Atmosphere-terrestrial exchange of gaseous elemental mercury: parameterization improvement through direct comparison with measured ecosystem fluxes
The resistance-based models combined with a new soil re-emission parameterization reproduce the observed diel and seasonal patterns of Hg0 exchange.
Overview of HOMEChem: House Observations of Microbial and Environmental Chemistry
The House Observations of Microbial and Environmental Chemistry (HOMEChem) study was a large-scale collaborative experimental investigation probing indoor air composition and chemistry.
Assessing indoor gas phase oxidation capacity through real-time measurements of HONO and NOx in Guangzhou, China
The photolysis of nitrous acid (HONO) is the main initiation source of hydroxyl radical (OH) which in turn is the main oxidant controlling the oxidation capacity of the indoor atmosphere.
Total surface area in indoor environments
Objects in a room add 50% to its surface area beyond the walls, ceiling, and floor.
Role of location, season, occupant activity, and chemistry in indoor ozone and nitrogen oxide mixing ratios
Indoor field studies and in situ chamber experiments illustrate the interdependence of oxidants and oxidant precursors in residences.
Secondary product creation potential (SPCP): a metric for assessing the potential impact of indoor air pollution on human health
Secondary Product Creation Potential (SPCP): a new metric for ranking the impact of volatile organic compounds on indoor air chemistry and human health.
Human occupant contribution to secondary aerosol mass in the indoor environment
Occupancy in indoor spaces can contribute to indoor aerosol mass via reactions of oxidants such as ozone with skin constituents and subsequent partitioning of those oxidation product to existing aerosol.
Sources of isocyanic acid (HNCO) indoors: a focus on cigarette smoke
The sources and sinks of isocyanic acid (HNCO), a toxic gas, in indoor environments are largely uncharacterized.
Emerging investigator series: primary emissions, ozone reactivity, and byproduct emissions from building insulation materials
Insulation materials affect indoor air by (i) releasing primary volatile organic compounds (VOCs) from enclosure cavities to the interior space, (ii) mitigating exposure to outdoor pollutants through reactive deposition (of oxidants, e.g., ozone) or filtration in infiltration air, and (iii) generating secondary VOCs and gas-phase byproducts from chemical reactions.
Size distribution of airborne particle-bound PAHs and o-PAHs and their implications for dry deposition
Size distribution of o-PAHs vs. their parent compounds and their implications for dry deposition.
Brown carbon in the continental outflow to the North Indian Ocean
In this paper, we synthesize the size distribution and optical properties of the atmospheric water-soluble fraction of light-absorbing organic carbon (brown carbon; BrC) in the continental outflow from the Indo-Gangetic Plain (IGP) in South Asia to the North Indian Ocean.
About this collection
This web collection features research articles published in Environmental Science: Processes & Impacts focussed on atmospheric chemistry.