Themed collection Environmental Science: Processes & Impacts Recent HOT Articles

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Communication

Validation of a modified IDEXX defined-substrate assay for detection of antimicrobial resistant E. coli in environmental reservoirs

Antimicrobial resistant organisms can be transmitted to humans through multiple environmental pathways. Monitoring these organisms in multiple environmental reservoirs is an important step towards mitigating adverse health impacts.

Graphical abstract: Validation of a modified IDEXX defined-substrate assay for detection of antimicrobial resistant E. coli in environmental reservoirs
Communication

Nitrogen fixing bacteria facilitate microbial biodegradation of a bio-based and biodegradable plastic in soils under ambient and future climatic conditions

We discovered a biological mechanism supporting microbial degradation of bio-based poly(butylene succinate-co-adipate) (PBSA) plastic in soils under ambient and future climates.

Graphical abstract: Nitrogen fixing bacteria facilitate microbial biodegradation of a bio-based and biodegradable plastic in soils under ambient and future climatic conditions
From the themed collection: Contaminant remediation and fate
Open Access Paper

Characterization and dermal bioaccessibility of residual- and listed PFAS ingredients in cosmetic products

Estimation of dermal bioaccessibility and characterization of listed-ingredient and residual per- and polyfluoroalkyl substances (PFAS) in cosmetic products.

Graphical abstract: Characterization and dermal bioaccessibility of residual- and listed PFAS ingredients in cosmetic products
From the themed collection: Contaminant remediation and fate
Paper

Effects of carbonate on ferrihydrite transformation in alkaline media

This study indicates that in alkaline media, carbonate slightly inhibits ferrihydrite transformation and suppresses goethite formation, but promotes hematite formation, which has important implications for elemental biogeochemical cycles.

Graphical abstract: Effects of carbonate on ferrihydrite transformation in alkaline media
From the themed collection: Geochemistry
Open Access Paper

Emission inventory of PFASs and other fluorinated organic substances for the fluoropolymer production industry in Europe

This study assesses the environmental impact of the fluoropolymer industry in Europe by making an inventory of their emissions of PFASs and other fluorinated organic substances.

Graphical abstract: Emission inventory of PFASs and other fluorinated organic substances for the fluoropolymer production industry in Europe
From the themed collection: Contaminant remediation and fate
Paper

How do certain atmospheric aerosols affect Cu-binding organic ligands in the oligotrophic coastal sea surface microlayer?

We showed that oligotrophic coastal marine areas are susceptible to the deposition of pollen and aerosols from open-fire biomass burning, which alter Cu-binding organic ligands in the sea surface microlayer.

Graphical abstract: How do certain atmospheric aerosols affect Cu-binding organic ligands in the oligotrophic coastal sea surface microlayer?
From the themed collection: Geochemistry
Open Access Paper

Identification and quantification of fluorinated polymers in consumer products by combustion ion chromatography and pyrolysis-gas chromatography-mass spectrometry

Using the combination of total analysis and pyrolysis-gas chromatography-mass spectrometry to identify fluoropolymers in a broad range of consumer products.

Graphical abstract: Identification and quantification of fluorinated polymers in consumer products by combustion ion chromatography and pyrolysis-gas chromatography-mass spectrometry
From the themed collection: Environmental exposure and impacts
Paper

Understanding the importance of atmospheric transformation in assessing the hazards of liquid crystal monomers

The results suggest that atmospheric transformation can significantly change the hazard properties of LCMs, emphasizing the importance of atmospheric transformation when evaluating the hazards of LCMs.

Graphical abstract: Understanding the importance of atmospheric transformation in assessing the hazards of liquid crystal monomers
From the themed collection: Contaminant remediation and fate
Paper

Temperature and particles interact to affect human norovirus and MS2 persistence in surface water

To our knowledge, this study is the first to assess the effects of surface water particle content on human norovirus decay rate constants, which will be useful parameters in fate and transport models.

Graphical abstract: Temperature and particles interact to affect human norovirus and MS2 persistence in surface water
From the themed collection: Contaminant remediation and fate
Paper

Predictive binary mixture toxicity modeling of fluoroquinolones (FQs) and the projection of toxicity of hypothetical binary FQ mixtures: a combination of 2D-QSAR and machine-learning approaches

We have developed conventional and machine learning-based mixture QSAR models from the toxicity data of the binary mixtures of fluoroquinolones in E. coli.

Graphical abstract: Predictive binary mixture toxicity modeling of fluoroquinolones (FQs) and the projection of toxicity of hypothetical binary FQ mixtures: a combination of 2D-QSAR and machine-learning approaches
From the themed collection: Environmental exposure and impacts
Open Access Paper

Contact with soil impacts ferrihydrite and lepidocrocite transformations during redox cycling in a paddy soil

We studied the transformation of 57Fe-labelled ferrihydrite and lepidocrocite mixed with a flooded paddy soil by using 57Fe-Mössbauer spectroscopy.

Graphical abstract: Contact with soil impacts ferrihydrite and lepidocrocite transformations during redox cycling in a paddy soil
From the themed collection: Geochemistry
Paper

Evaluating the pH-dependence of DOM absorbance, fluorescence, and photochemical production of singlet oxygen

The protonation state of dissolved organic matter (DOM) impacts its structure and function in natural and engineered environmental systems, including DOM's ability to absorb light and form photochemically produced reactive intermediates (PPRI).

Graphical abstract: Evaluating the pH-dependence of DOM absorbance, fluorescence, and photochemical production of singlet oxygen
From the themed collection: Geochemistry
Paper

Antioxidant N-acetylcysteine removing ROS: an antifouling strategy inspired by mussels

Inspired by the adhesion characteristics of mussels, this paper proposed an antifouling strategy of using antioxidants to remove ROS.

Graphical abstract: Antioxidant N-acetylcysteine removing ROS: an antifouling strategy inspired by mussels
From the themed collection: Contaminant remediation and fate
Open Access Paper

Adding open spectral data to MassBank and PubChem using open source tools to support non-targeted exposomics of mixtures

Adding mass spectra from complex mixtures of chemicals relevant for exposomics to open spectral libraries such as MassBank and chemical databases like PubChem empowers identification efforts for non-target high resolution mass spectrometry workflows.

Graphical abstract: Adding open spectral data to MassBank and PubChem using open source tools to support non-targeted exposomics of mixtures
From the themed collection: Environmental exposure and impacts
Open Access Paper

Mixture effect assessment applying in vitro bioassays to in-tissue silicone extracts of traditional foods prepared from beluga whale blubber

Mixtures extracted from beluga traditional food preparations activated oxidative stress response and the aryl hydrocarbon receptor but did not show any hormone-like effects.

Graphical abstract: Mixture effect assessment applying in vitro bioassays to in-tissue silicone extracts of traditional foods prepared from beluga whale blubber
From the themed collection: Environmental exposure and impacts
Paper

Non-targeted identification and semi-quantitation of emerging per- and polyfluoroalkyl substances (PFAS) in US rainwater

Analysis of precipitation finds many emerging PFAS.

Graphical abstract: Non-targeted identification and semi-quantitation of emerging per- and polyfluoroalkyl substances (PFAS) in US rainwater
From the themed collection: Contaminant remediation and fate
Paper

Autoxidation of glycols used in inhalable daily products: implications for the use of artificial fogs and e-cigarettes

The use of glycols is seen in various industries and occupations.

Graphical abstract: Autoxidation of glycols used in inhalable daily products: implications for the use of artificial fogs and e-cigarettes
From the themed collection: Environmental exposure and impacts
Paper

Kinetics of hypochlorous acid reactions with organic and chloride-containing tropospheric aerosol

This study describes laboratory experiments on the reaction HOCl with chloride-containing aerosol and aerosol containing selected organic compounds with and without chloride.

Graphical abstract: Kinetics of hypochlorous acid reactions with organic and chloride-containing tropospheric aerosol
From the themed collection: Atmospheric chemistry
Paper

Read-across-based intelligent learning: development of a global q-RASAR model for the efficient quantitative predictions of skin sensitization potential of diverse organic chemicals

This computational work presents a novel similarity-based q-RASAR approach for the development of a global model that can quantitatively and efficiently identify the skin sensitization potential of hazardous chemicals.

Graphical abstract: Read-across-based intelligent learning: development of a global q-RASAR model for the efficient quantitative predictions of skin sensitization potential of diverse organic chemicals
From the themed collection: Environmental exposure and impacts
Paper

Formation of oil-particle aggregates in the presence of marine algae

After an oil spill, the formation of oil-particle aggregates (OPAs) is associated with the interaction between dispersed oil and marine particulate matter such as phytoplankton, bacteria and mineral particles.

Graphical abstract: Formation of oil-particle aggregates in the presence of marine algae
From the themed collection: Contaminant remediation and fate
Paper

Non-extractable PFAS in functional textiles – characterization by complementary methods: oxidation, hydrolysis, and fluorine sum parameters

Oxidative methods (TOP and PhotoTOP) were combined with hydrolysis (THP assay) and fluorine sum parameters (EOF and TF) to characterize side-chain fluorinated polymers (SFPs) in functional textiles.

Graphical abstract: Non-extractable PFAS in functional textiles – characterization by complementary methods: oxidation, hydrolysis, and fluorine sum parameters
From the themed collection: Contaminant remediation and fate
Paper

Monitoring microplastic–contaminant sorption processes in real-time using membrane introduction mass spectrometry

The rate and extent of sorption of trace contaminants to microplastics was monitored in real-time using direct mass spectrometry.

Graphical abstract: Monitoring microplastic–contaminant sorption processes in real-time using membrane introduction mass spectrometry
From the themed collection: Contaminant remediation and fate
Paper

Wildfires in the western United States are mobilizing PM2.5-associated nutrients and may be contributing to downwind cyanobacteria blooms

Wildfire activity is increasing in the continental U.S. and can be linked to climate change effects and nutrient emissions, with potential effects on downwind ecosystems.

Graphical abstract: Wildfires in the western United States are mobilizing PM2.5-associated nutrients and may be contributing to downwind cyanobacteria blooms
From the themed collection: Atmospheric chemistry
Paper

The fate of organic peroxides indoors: quantifying humidity-dependent uptake on naturally soiled indoor window glass

The effect of humidity on organic hydroperoxide (ROOH) removal from air to real indoor surface films was investigated. A novel flow reactor for studying uptake kinetics of indoor pollutants on indoor materials is introduced.

Graphical abstract: The fate of organic peroxides indoors: quantifying humidity-dependent uptake on naturally soiled indoor window glass
From the themed collection: Atmospheric chemistry
Paper

Biogeochemical and hydrologic synergy control mercury fate in an arid land river-reservoir system

Methylmercury formed in anoxic reservoirs associates with organic-rich particles and is exported downstream.

Graphical abstract: Biogeochemical and hydrologic synergy control mercury fate in an arid land river-reservoir system
From the themed collection: Geochemistry
Paper

Chemical characteristics, leaching, and stability of the ubiquitous tire rubber-derived toxicant 6PPD-quinone

We here report chemical characteristics relevant to the fate and transport of the recently discovered environmental toxicant 6PPD-quinone (2-((4-methylpentan-2-yl)amino)-5-(phenylamino)cyclohexa-2,5-diene-1,4-dione or “6PPDQ”).

Graphical abstract: Chemical characteristics, leaching, and stability of the ubiquitous tire rubber-derived toxicant 6PPD-quinone
From the themed collection: Contaminant remediation and fate
Paper

An amended in vitroin vivo extrapolation model that accounts for first pass clearance effects on chemical bioaccumulation in fish

An amended in vitroin vivo extrapolation model that accounts for first pass clearance effects on chemical bioaccumulation in fish. Pre-systemic biotransformation can significantly reduce chemical oral bioavailability, which can reduce dietary chemical bioaccumulation potential.

Graphical abstract: An amended in vitro–in vivo extrapolation model that accounts for first pass clearance effects on chemical bioaccumulation in fish
Paper

Emerging investigator series: an instrument to measure and speciate the total reactive nitrogen budget indoors: description and field measurements

A robust and quantitative instrument that measures total gas-phase reactive nitrogen (tNr) has been developed for indoor air quality surveys. It can focus on NOx, HONO, and NH3 levels indoors, from the complete tNr budget, on timescales of 5–20 min.

Graphical abstract: Emerging investigator series: an instrument to measure and speciate the total reactive nitrogen budget indoors: description and field measurements
From the themed collection: Atmospheric chemistry
Open Access Paper

Kinetics of the nitrate-mediated photooxidation of monocarboxylic acids in the aqueous phase

This work highlights how the pH of the atmospheric aqueous phase can influence the degradation of carboxylic acids during nitrate-mediated photooxidation.

Graphical abstract: Kinetics of the nitrate-mediated photooxidation of monocarboxylic acids in the aqueous phase
From the themed collection: Atmospheric chemistry
Paper

Crystal lattice defects in nanocrystalline metacinnabar in contaminated streambank soils suggest a role for biogenic sulfides in the formation of mercury sulfide phases

At mercury (Hg)-contaminated sites, streambank erosion can act as a main mobilizer of Hg into nearby waterbodies.

Graphical abstract: Crystal lattice defects in nanocrystalline metacinnabar in contaminated streambank soils suggest a role for biogenic sulfides in the formation of mercury sulfide phases
From the themed collection: Geochemistry
Open Access Paper

Photochemical weathering of polyurethane microplastics produced complex and dynamic mixtures of dissolved organic chemicals

Sunlight exposure can naturally mitigate microplastics pollution in the surface ocean, however it results in emissions of dissolved organic carbon (DOC) whose characteristics and fate remain largely unknown.

Graphical abstract: Photochemical weathering of polyurethane microplastics produced complex and dynamic mixtures of dissolved organic chemicals
From the themed collection: Contaminant remediation and fate
Paper

Effect of geochemical conditions on PFAS release from AFFF-impacted saturated soil columns

Certain PFAS, such as 4:2 fluorotelomer sulfonate, eluted faster from high pH, high sodium columns compared to neutral columns packed with field-collected soil. Other PFAS had more mass eluted from the high pH, high sodium columns.

Graphical abstract: Effect of geochemical conditions on PFAS release from AFFF-impacted saturated soil columns
From the themed collection: Contaminant remediation and fate
Paper

Influence of microbial weathering on the partitioning of per- and polyfluoroalkyl substances (PFAS) in biosolids

Per- and polyfluoroalkyl substances (PFAS) are a large group of man-made fluorinated organic chemicals that can accumulate in the environment.

Graphical abstract: Influence of microbial weathering on the partitioning of per- and polyfluoroalkyl substances (PFAS) in biosolids
From the themed collection: Contaminant remediation and fate
Paper

Evaluation of iodide chemical ionization mass spectrometry for gas and aerosol-phase per- and polyfluoroalkyl substances (PFAS) analysis

Per- and polyfluoroalkyl substances (PFAS) can be measured in real time in gas and aerosol using iodide chemical ionization mass spectrometry (CIMS).

Graphical abstract: Evaluation of iodide chemical ionization mass spectrometry for gas and aerosol-phase per- and polyfluoroalkyl substances (PFAS) analysis
Paper

Exploring controls on perfluorocarboxylic acid (PFCA) gas–particle partitioning using a model with observational constraints

The atmospheric fate of perfluorocarboxylic acids (PFCAs) has attracted much attention in recent decades due to the role of the atmosphere in global transport of these persistent chemicals.

Graphical abstract: Exploring controls on perfluorocarboxylic acid (PFCA) gas–particle partitioning using a model with observational constraints
From the themed collection: Atmospheric chemistry
Paper

Aqueous processing of water-soluble organic compounds in the eastern United States during winter

The uptake of WSOCg from biomass burning into ALW results in compounds that remain in the particle phase upon drying.

Graphical abstract: Aqueous processing of water-soluble organic compounds in the eastern United States during winter
From the themed collection: Atmospheric chemistry
Paper

Iodine emission from the reactive uptake of ozone to simulated seawater

We suggest a re-evaluation of two reaction rate constants to be able to better model iodine emission from the ozonolysis of iodide in the presence of chloride.

Graphical abstract: Iodine emission from the reactive uptake of ozone to simulated seawater
From the themed collection: Atmospheric chemistry
Paper

Kinetics of oligomer-forming reactions involving the major functional groups present in atmospheric secondary organic aerosol particles

Measurements of the kinetics of accretion reactions involving organic compounds typical of those present in atmospheric aerosol particles demonstrate the potential importance of peroxyhemiacetal and ester formation in a single organic phase and in phase-separated organic/aqueous mixtures containing a sulfuric acid catalyst.

Graphical abstract: Kinetics of oligomer-forming reactions involving the major functional groups present in atmospheric secondary organic aerosol particles
From the themed collection: Atmospheric chemistry
Paper

Formation pathways of aldehydes from heated cooking oils

We studied the mechanisms of cooking oil decomposition that lead to emission of aldehydes, an important group of air pollutants, from food cooking.

Graphical abstract: Formation pathways of aldehydes from heated cooking oils
From the themed collection: Atmospheric chemistry
Paper

Real-time measurements of product compounds formed through the reaction of ozone with breath exhaled VOCs

Human presence can affect indoor air quality because of secondary organic compounds formed upon reactions between gaseous oxidant species, e.g., ozone (O3), hydroxyl radicals (OH), and chemical compounds from skin, exhaled breath, hair and clothes.

Graphical abstract: Real-time measurements of product compounds formed through the reaction of ozone with breath exhaled VOCs
From the themed collection: Environmental exposure and impacts
Paper

Photodegradation of polyolefin thin films in simulated freshwater conditions

Polypropylene (PP) and polyethylene (PE) are commonly used polyolefins, which have resulted in their accumulation in the environment, and can photodegrade in freshwater systems.

Graphical abstract: Photodegradation of polyolefin thin films in simulated freshwater conditions
From the themed collection: Contaminant remediation and fate
Paper

Legacy and emerging airborne per- and polyfluoroalkyl substances (PFAS) collected on PM2.5 filters in close proximity to a fluoropolymer manufacturing facility

Large fluoropolymer manufacturing plants are major sources of per- and polyfluoroalkyl substances (PFAS) to the environment; we measured legacy and emerging PFAS in air to provide insights into near-source PFAS profiles.

Graphical abstract: Legacy and emerging airborne per- and polyfluoroalkyl substances (PFAS) collected on PM2.5 filters in close proximity to a fluoropolymer manufacturing facility
From the themed collection: Atmospheric chemistry
Paper

Indoor partitioning and potential thirdhand exposure to carbonyl flavoring agents added in e-cigarettes and hookah tobacco

The residents are likely to experience harmful thirdhand exposure due to the indoor partitioning of flavoring agents added to the e-cigarettes and hookah tobacco.

Graphical abstract: Indoor partitioning and potential thirdhand exposure to carbonyl flavoring agents added in e-cigarettes and hookah tobacco
From the themed collection: Atmospheric chemistry
Paper

Recovery of per- and polyfluoroalkyl substances after solvent evaporation

Presented data shows that vacuum evaporative concentration of PFAS standards can cause class-specific loss of material that can be mitigated via recovery steps.

Graphical abstract: Recovery of per- and polyfluoroalkyl substances after solvent evaporation
Paper

Atomistic insights into the hydrodefluorination of PFAS using silylium catalysts

Fluorochemicals are a persistent environmental contaminant that require specialized techniques for degradation and capture.

Graphical abstract: Atomistic insights into the hydrodefluorination of PFAS using silylium catalysts
From the themed collection: Contaminant remediation and fate
Paper

Emerging investigator series: ozone uptake by urban road dust and first evidence for chlorine activation during ozone uptake by agro-based anti-icer: implications for wintertime air quality in high-latitude urban environments

In this study, we report the heterogeneous chemistry of ozone with urban road dust and anti-icer. We present a novel pathway for chlorine activation during ozone uptake by anti-icer and discuss its potential air quality impacts in cold-climate urban regions.

Graphical abstract: Emerging investigator series: ozone uptake by urban road dust and first evidence for chlorine activation during ozone uptake by agro-based anti-icer: implications for wintertime air quality in high-latitude urban environments
From the themed collection: Atmospheric chemistry
Open Access Paper

The dependence of soot particle ice nucleation ability on its volatile content

The removal of volatile content enhances the ice nucleation of soot particles by increasing the particle porosity and surface wettability.

Graphical abstract: The dependence of soot particle ice nucleation ability on its volatile content
From the themed collection: Atmospheric chemistry
Open Access Paper

Are cosmetics a significant source of PFAS in Europe? product inventories, chemical characterization and emission estimates

Estimates of per- and polyfluoroalkyl substance (PFAS) emission from the use of cosmetics in Europe.

Graphical abstract: Are cosmetics a significant source of PFAS in Europe? product inventories, chemical characterization and emission estimates
From the themed collection: Contaminant remediation and fate
Paper

Phase state of organic aerosols may limit temperature-driven thermodynamic repartitioning following outdoor-to-indoor transport

Monte Carlo simulations suggest that organic aerosol repartitioning during transport indoors is often kinetically limited due to a low bulk diffusivity, but liquid and some semisolid particles can achieve equilibrium repartitioning during indoor particle lifetimes.

Graphical abstract: Phase state of organic aerosols may limit temperature-driven thermodynamic repartitioning following outdoor-to-indoor transport
From the themed collection: Atmospheric chemistry
Paper

Sucralose as an oxidative-attenuation tracer for characterizing the application of in situ chemical oxidation for the treatment of 1,4-dioxane

We test the use of sucralose as an oxidative-attenuation tracer to characterize the impact of ISCO for treatment of 1,4-dioxane in groundwater.

Graphical abstract: Sucralose as an oxidative-attenuation tracer for characterizing the application of in situ chemical oxidation for the treatment of 1,4-dioxane
From the themed collection: Contaminant remediation and fate
Open Access Paper

Fate-directed risk assessment of chemical mixtures: a case study for cedarwood essential oil

The fate-directed risk assessment helps evaluate whether the risk assessment of known constituents is representative for an entire UVCB.

Graphical abstract: Fate-directed risk assessment of chemical mixtures: a case study for cedarwood essential oil
From the themed collection: Environmental exposure and impacts
Open Access Paper

A food web bioaccumulation model for the accumulation of per- and polyfluoroalkyl substances (PFAS) in fish: how important is renal elimination?

We present a whole-body aquatic food web bioaccumulation model for perfluoroalkyl acids and two alternatives. Results highlight structure-dependent mechanisms, including phospholipid partitioning, blood plasma protein binding, and renal elimination.

Graphical abstract: A food web bioaccumulation model for the accumulation of per- and polyfluoroalkyl substances (PFAS) in fish: how important is renal elimination?
From the themed collection: Environmental exposure and impacts
Paper

Metal (hydr)oxide surface precipitates and their effects on potassium sorption

Surface precipitation has been shown to occur on rapid time scales in clay and metal oxide mineral systems.

Graphical abstract: Metal (hydr)oxide surface precipitates and their effects on potassium sorption
From the themed collection: Geochemistry
Open Access Paper

Concentrations and isomer profiles of hexabromocyclododecanes (HBCDDs) in floor, elevated surface, and outdoor dust samples from Basrah, Iraq

Within-room (between elevated surface dust and floor dust) and within-home (between indoor and outdoor dust) spatial variability in concentrations of HBCDDs were observed.

Graphical abstract: Concentrations and isomer profiles of hexabromocyclododecanes (HBCDDs) in floor, elevated surface, and outdoor dust samples from Basrah, Iraq
From the themed collection: Environmental exposure and impacts
Open Access Paper

Mercury in air and soil on an urban-rural transect in East Africa

Spatially resolved atmospheric gaseous elemental mercury (GEM) concentrations from an urban area in the Southern Hemisphere are reported for the first time.

Graphical abstract: Mercury in air and soil on an urban-rural transect in East Africa
From the themed collection: Atmospheric chemistry
Open Access Paper

Comparability of semivolatile organic compound concentrations from co-located active and passive air monitoring networks in Europe

Passive and active air-sampling results from 10 years of monitoring for 28 semivolatile organic compounds at six sites across Europe are compared and recommendations for interpreting passive air-sampler results are offered.

Graphical abstract: Comparability of semivolatile organic compound concentrations from co-located active and passive air monitoring networks in Europe
Paper

Development of a PFAS reaction library: identifying plausible transformation pathways in environmental and biological systems

We have developed reaction libraries for predicting transformation products of PFAS in a variety of environmental and biological reaction systems.

Graphical abstract: Development of a PFAS reaction library: identifying plausible transformation pathways in environmental and biological systems
From the themed collection: Contaminant remediation and fate
Open Access Paper

Graphical tools for the planning and interpretation of polyurethane foam based passive air sampling campaigns

Charts display the length of the linear uptake period, the time to equilibrium, and the loss of depuration compounds for the PUF-PAS. Required are only the length, temperature, and wind speed of deployment and the chemical partitioning properties.

Graphical abstract: Graphical tools for the planning and interpretation of polyurethane foam based passive air sampling campaigns
Paper

Spatial distribution and biogeochemistry of redox active species in arctic sedimentary porewaters and seeps

Schematic showing how voltammetric microelectrodes were used to profile arctic lake sediments, where different locations contained different distributions of redox-active species.

Graphical abstract: Spatial distribution and biogeochemistry of redox active species in arctic sedimentary porewaters and seeps
From the themed collection: Geochemistry
Paper

The Sea Spray Chemistry and Particle Evolution study (SeaSCAPE): overview and experimental methods

The SeaSCAPE campaign replicated the marine atmosphere in the laboratory to investigate the links between biological activity in the ocean and the properties of primary sea spray aerosols, volatile organic compounds, and secondary marine aerosols.

Graphical abstract: The Sea Spray Chemistry and Particle Evolution study (SeaSCAPE): overview and experimental methods
From the themed collection: Atmospheric chemistry
Paper

Abiotic reduction of 3-nitro-1,2,4-triazol-5-one (NTO) and other munitions constituents by wood-derived biochar through its rechargeable electron storage capacity

Quantitative conversion of NTO to ATO by reduced wood biochar can occur repeatedly through recharging of the biochar's electron storage capacity.

Graphical abstract: Abiotic reduction of 3-nitro-1,2,4-triazol-5-one (NTO) and other munitions constituents by wood-derived biochar through its rechargeable electron storage capacity
From the themed collection: Contaminant remediation and fate
Open Access Paper

Groundwaters in Northeastern Pennsylvania near intense hydraulic fracturing activities exhibit few organic chemical impacts

Hydrogeologic transport contributes to limited organic chemical contamination in a region of intense gas extraction, even 10 years post-development.

Graphical abstract: Groundwaters in Northeastern Pennsylvania near intense hydraulic fracturing activities exhibit few organic chemical impacts
Paper

Investigation of perfluoroalkyl substances in proglacial rivers and permafrost seep in a high Arctic watershed

We measured perfluoroalkyl substances (PFAS) in proglacial rivers and along a non-glacial freshwater continuum to investigate the role of snow and ice melting in their transport and fate within the Lake Hazen watershed (82° N).

Graphical abstract: Investigation of perfluoroalkyl substances in proglacial rivers and permafrost seep in a high Arctic watershed
From the themed collection: Contaminant remediation and fate
Paper

Aerobic biotransformation of a novel highly functionalized polyfluoroether-based surfactant using activated sludge from a wastewater treatment plant

We incubated a novel fluorosurfactant with wastewater treatment plant sludge and identified smaller PFAS biotransformation products with lower bioaccumulation potential compared to the starting material.

Graphical abstract: Aerobic biotransformation of a novel highly functionalized polyfluoroether-based surfactant using activated sludge from a wastewater treatment plant
From the themed collection: Contaminant remediation and fate
Paper

Characterizing photochemical ageing processes of microplastic materials using multivariate analysis of infrared spectra

PCA model of ATR-FTIR spectra discriminates plastic types and predicts photochemical age under long-term natural and artificial weathering conditions.

Graphical abstract: Characterizing photochemical ageing processes of microplastic materials using multivariate analysis of infrared spectra
From the themed collection: Contaminant remediation and fate
Open Access Paper

Surface-water/groundwater boundaries affect seasonal PFAS concentrations and PFAA precursor transformations

Aqueous PFAS concentrations fluctuate seasonally and precursor concentrations rapidly decline within the surface-water/groundwater boundary, indicating that transport through this boundary can affect spatial and temporal PFAS composition.

Graphical abstract: Surface-water/groundwater boundaries affect seasonal PFAS concentrations and PFAA precursor transformations
From the themed collection: Contaminant remediation and fate
Paper

Screening the baseline fish bioconcentration factor of various types of surfactants using phospholipid binding data

Measured membrane lipid–water distribution ratios (DMLW) circumvent unreliable KOW values for surfactants in tier 1 screening for the bioconcentration potential.

Graphical abstract: Screening the baseline fish bioconcentration factor of various types of surfactants using phospholipid binding data
From the themed collection: Environmental exposure and impacts
Open Access Paper

Challenges and policy implications of long-term changes in mass absorption cross-section derived from equivalent black carbon and elemental carbon measurements in London and south-east England in 2014–2019

This paper concludes that mass absorption cross-section (MAC) values in London, UK have changed over time. It provides possible explanations and highlights implications for the interpretation of long-term trends.

Graphical abstract: Challenges and policy implications of long-term changes in mass absorption cross-section derived from equivalent black carbon and elemental carbon measurements in London and south-east England in 2014–2019
From the themed collection: Atmospheric chemistry
Paper

Kinetics of the oxidation of ammonia and amines with hydroxyl radicals in the aqueous phase

The aqueous phase oxidation of ammonia and alkyl amines by OH is pH-dependent and can impact their atmospheric lifetime.

Graphical abstract: Kinetics of the oxidation of ammonia and amines with hydroxyl radicals in the aqueous phase
From the themed collection: Atmospheric chemistry
Paper

Atmospheric mercury sources in a coastal-urban environment: a case study in Boston, Massachusetts, USA

Fugitive emissions of mercury from unknown point and/or nonpoint sources are underestimated in current inventories.

Graphical abstract: Atmospheric mercury sources in a coastal-urban environment: a case study in Boston, Massachusetts, USA
From the themed collection: Atmospheric chemistry
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About this collection

Here is a collection of recent Environmental Science: Processes & Impacts articles which have been classified as ‘HOT articles’ due to receiving particularly high scores at peer review.

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