Themed collection Environmental Science: Processes & Impacts Recent HOT Articles

46 items
Open Access Perspective

To be or not to be degraded: in defense of persistence assessment of chemicals

Characterizing the degradation behavior of chemicals in the environment is a key component of chemical hazard and risk assessment.

Graphical abstract: To be or not to be degraded: in defense of persistence assessment of chemicals
Open Access Critical Review

Climate change influence on the levels and trends of persistent organic pollutants (POPs) and chemicals of emerging Arctic concern (CEACs) in the Arctic physical environment – a review

Direct and indirect effects of climate change influence contaminant sources, transport, re-distribution and circulation in the physical environment of the Arctic. Linkages of such observations to Arctic ecosystem exposure and effects are needed.

Graphical abstract: Climate change influence on the levels and trends of persistent organic pollutants (POPs) and chemicals of emerging Arctic concern (CEACs) in the Arctic physical environment – a review
Open Access Critical Review

The influence of global climate change on accumulation and toxicity of persistent organic pollutants and chemicals of emerging concern in Arctic food webs

Global climate change-driven shifts in physical and ecological processes may alter POPs concentrations in Arctic food webs.

Graphical abstract: The influence of global climate change on accumulation and toxicity of persistent organic pollutants and chemicals of emerging concern in Arctic food webs
Open Access Critical Review

Influence of climate change on persistent organic pollutants and chemicals of emerging concern in the Arctic: state of knowledge and recommendations for future research

Future climate change in the Arctic will lead to loss of ice, snow and permafrost, increasing human activity and development, and changes in wind and ocean circulation patterns, that could alter the pathways, distribution and fate of contaminants.

Graphical abstract: Influence of climate change on persistent organic pollutants and chemicals of emerging concern in the Arctic: state of knowledge and recommendations for future research
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
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
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
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
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
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
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
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
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?
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Paper

Emerging investigator series: human CYP2A6 catalyzes the oxidation of 6:2 fluorotelomer alcohol

The human polymorphic enzyme CYP2A6 is primarily responsible for catalyzing the oxidation and activation of one PFAS, the 6:2 fluorotelomer alcohol.

Graphical abstract: Emerging investigator series: human CYP2A6 catalyzes the oxidation of 6:2 fluorotelomer alcohol
Paper

Aerosol dynamics modeling of sub-500 nm particles during the HOMEChem study

Application of an aerosol dynamics model to estimate emission rates and fates of sub-500 nm particles in a test house.

Graphical abstract: Aerosol dynamics modeling of sub-500 nm particles during the HOMEChem study
Open Access Paper

Concentrations of halogenated flame retardants and polychlorinated biphenyls in house dust from Lagos, Nigeria

Levels of PCBs and some PBDEs in Lagos house dust have declined, demonstrating the efficacy of restrictions on these chemicals. In contrast, deca-BDE levels show no clear decline; implying its more recent restriction has yet to be fully effective.

Graphical abstract: Concentrations of halogenated flame retardants and polychlorinated biphenyls in house dust from Lagos, Nigeria
Paper

Indoor black carbon and brown carbon concentrations from cooking and outdoor penetration: insights from the HOMEChem study

Black carbon and brown carbon emissions were investigated for different indoor activities and during periods of no activity in a test house as a part of the HOMEChem study.

Graphical abstract: Indoor black carbon and brown carbon concentrations from cooking and outdoor penetration: insights from the HOMEChem study
Open Access Paper

Particle characterisation and bioaccessibility of manganese in particulate matter in silico- and ferromanganese smelters

(1) Physicochemical characterisation of single particles collected in an FeMn/SiMn furnace hall. (2) Bioaccessibility of manganese in particulate matter tested in terms of dissolution in Gamble solution.

Graphical abstract: Particle characterisation and bioaccessibility of manganese in particulate matter in silico- and ferromanganese smelters
Paper

Ionization selectivity of electrospray and atmospheric pressure photoionization FT-ICR MS for petroleum refinery wastewater dissolved organic matter

ESI and APPI were highly complementary for characterizing refinery wastewater dissolved organic matter.

Graphical abstract: Ionization selectivity of electrospray and atmospheric pressure photoionization FT-ICR MS for petroleum refinery wastewater dissolved organic matter
Open Access Paper

Emerging investigator series: a holistic approach to multicomponent EXAFS: Sr and Cs complexation in clayey soils

Strontium and caesium are fission products of concern at many nuclear legacy sites. In this study we used a novel approach to EXAFS spectra to determine the details of Cs and Sr surface complexation in clayey soils.

Graphical abstract: Emerging investigator series: a holistic approach to multicomponent EXAFS: Sr and Cs complexation in clayey soils
Paper

The effect of plastic additives on Shewanella oneidensis growth and function

Plastic waste has the potential for significant consequences on various ecosystems; yet, there are gaps in our understanding of the interaction of bacteria with polymer additives.

Graphical abstract: The effect of plastic additives on Shewanella oneidensis growth and function
Open Access Paper

Refinement and extension of COSMO-RS-trained fragment contribution models for predicting the partition properties of C10–20 chlorinated paraffin congeners

New COSMO-RS-trained fragment contribution models provided quantum chemically based predictions for a range of chlorinated paraffin congener groups and mixtures regarding partition properties and their temperature dependence.

Graphical abstract: Refinement and extension of COSMO-RS-trained fragment contribution models for predicting the partition properties of C10–20 chlorinated paraffin congeners
Open Access Paper

Risk assessment of soil heavy metal contamination at the census tract level in the city of Santa Ana, CA: implications for health and environmental justice

Soil-based risk assessment shows a U.S. city to exceed federal acceptable risk levels for both non-carcinogenic and carcinogenic health outcomes in many areas, with total risk and soil contamination being correlated with socioeconomic factors.

Graphical abstract: Risk assessment of soil heavy metal contamination at the census tract level in the city of Santa Ana, CA: implications for health and environmental justice
Paper

Emerging investigator series: municipal wastewater as a year-round point source of neonicotinoid insecticides that persist in an effluent-dominated stream

Municipal wastewater effluent is a significant year-round point source of neonicotinoids to a temperate-region wastewater effluent-dominated stream, leading to ecological exposure conditions of concern that persist downstream.

Graphical abstract: Emerging investigator series: municipal wastewater as a year-round point source of neonicotinoid insecticides that persist in an effluent-dominated stream
Paper

PFOS dominates PFAS composition in ambient fine particulate matter (PM2.5) collected across North Carolina nearly 20 years after the end of its US production

Quarterly PFOS concentrations (pg m−3) in ambient PM2.5 in North Carolina, US. Highest concentrations were measured during July–September.

Graphical abstract: PFOS dominates PFAS composition in ambient fine particulate matter (PM2.5) collected across North Carolina nearly 20 years after the end of its US production
Paper

Characterization of inhalation exposure to gaseous elemental mercury during artisanal gold mining and e-waste recycling through combined stationary and personal passive sampling

Stationary and personal passive sampling provides complementary information on the inhalation exposure to gaseous elemental mercury among Norwegian e-waste workers, and Ghanaian artisanal gold miners and community members.

Graphical abstract: Characterization of inhalation exposure to gaseous elemental mercury during artisanal gold mining and e-waste recycling through combined stationary and personal passive sampling
Paper

Divergent response of heavy metal bioavailability in soil rhizosphere to agricultural land use change from paddy fields to various drylands

The heavy metal pollution induced by agricultural land use change has attracted great attention.

Graphical abstract: Divergent response of heavy metal bioavailability in soil rhizosphere to agricultural land use change from paddy fields to various drylands
Paper

Assessment of emerging polar organic pollutants linked to contaminant pathways within an urban estuary using non-targeted analysis

Non-targeted analysis of polar organic pollutants using high resolution/accurate mass (HR/AM) mass spectrometry has been conducted in waters of San Francisco (SF) Bay to assess occurrence of emerging contaminants and inform future monitoring and management activities.

Graphical abstract: Assessment of emerging polar organic pollutants linked to contaminant pathways within an urban estuary using non-targeted analysis
46 items

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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