Themed collection Environmental Science: Processes & Impacts Recent HOT Articles
Interactions of emerging contaminants with model colloidal microplastics, C60 fullerene, and natural organic matter – effect of surface functional group and adsorbate properties
Molecular properties of emerging contaminants (ECs) and interfacial compositions of colloidal matter dictate the extent of EC–particulate matter surface interaction.
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.
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.
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.
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.
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.
Emerging investigator series: entrapment of uranium–phosphorus nanocrystals inside root cells of Tamarix plants from a mine waste site
Uranium uptake and accumulation in the roots of Tamarix plants, leading to extracellular U precipitation, and the intracellular entrapment of U–P nanocrystals.
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.
Biodegradation kinetics testing of two hydrophobic UVCBs – potential for substrate toxicity supports testing at low concentrations
This study assesses the impact of test concentration and potential mixture toxicity on biodegradation kinetics for individual constituents in two UVCB substances, diesel oil and lavender oil.
An emerging mobile air pollution source: outdoor plastic liner manufacturing sites discharge VOCs into urban and rural areas
The in situ manufacture of cured-in-place-pipe (CIPP) plastic liners in damaged sewer pipes is an emerging mobile source of anthropogenic air pollution.
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).
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.
Geochemical and isotope analysis of produced water from the Utica/Point Pleasant Shale, Appalachian Basin
Elemental and isotopic ratios can be used to identify environmental contamination form the increasing development of the Utica/Point Pleasant Shale.
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.
Aging induced changes in ice nucleation activity of combustion aerosol as determined by near edge X-ray absorption fine structure (NEXAFS) spectroscopy
Soot particles aged in acidic aqueous solutions reveal significantly enhanced ice nucleating activity.
Participatory science for coastal water quality: freshwater plume mapping and volunteer retention in a randomized informational intervention
This study presents a novel framework for estimating safe swimming distances at beaches and is the first participatory environmental science study to experimentally test strategies for increasing volunteer retention.
Determinants of serum concentrations of perfluoroalkyl acids (PFAAs) in school children and the contribution of low-level PFAA-contaminated drinking water
In order to improve human health risk assessment of perfluoroalkyl acids (PFAAs), demography/life-style/physiological factors and drinking water PFAA concentrations were investigated as possible determinants of child serum PFAA concentrations.
Natural and anthropogenic sources of bromoform and dibromomethane in the oceanographic and biogeochemical regime of the subtropical North East Atlantic
Transport of air masses from the subtropics, enriched in trace gases from the oceans, coasts and islands, towards lower latitudes under the trade inversion and uplift to the stratosphere in tropical deep convection.
Insights into origins and function of the unexplored majority of the reductive dehalogenase gene family as a result of genome assembly and ortholog group classification
Classifying all reductive dehalogenase genes from organohalide respiring bacteria, including nine newly closed genomes, predicts function and conserved synteny within species.
Halogenated semivolatile acetonitriles as chloramination disinfection by-products in water treatment: a new formation pathway from activated aromatic compounds
A new formation pathway has been identified for dichloroacetonitrile, a halogenated semivolatile drinking water disinfection by-product, from activated aromatic compounds.
Impact of bromide exposure on natural organochlorine loss from coastal wetland soils in the Winyah Bay, South Carolina
Naturally formed halogenated organic compounds are common in terrestrial and marine environments and play an important role in the halogen cycle.
Sources and sinks of chloromethane in a salt marsh ecosystem: constraints from concentration and stable isotope measurements of laboratory incubation experiments
Chloromethane (CH3Cl) is the most abundant long-lived chlorinated organic compound in the atmosphere and contributes significantly to natural stratospheric ozone depletion.
Isotope fractionation (2H/1H, 13C/12C, 37Cl/35Cl) in trichloromethane and trichloroethene caused by partitioning between gas phase and water
This article scrutinizes volatilization isotope effects of chlorinated organic compounds by taking into account all measurable stable isotopes of present elements and the three main kinetic and equilibrium partitioning scenarios.
Reduction of 1,2,3-trichloropropane (TCP): pathways and mechanisms from computational chemistry calculations
Lesser halogenated halocarbons such as 1,2,3-trichloropropane (TCP) are persistent under most conditions, but reductive beta-elimination favors complete dechlorination by hydrogenolysis of the allyl chloride intermediate.
Diverse dechlorinators and dechlorination genes enriched through amendment of chlorinated natural organic matter fractions
Chlorinated natural organic matter (Cl-NOM) can act as an electron acceptor for organohalide-respiring bacteria, stimulating contaminant dechlorination.
Complex epigenetic patterns in cerebellum generated after developmental exposure to trichloroethylene and/or high fat diet in autoimmune-prone mice
Trichloroethylene (TCE) is an environmental contaminant associated with immune-mediated inflammatory disorders and neurotoxicity.
Quantitative use of passive sampling data to derive a complete seasonal sequence of flood event loads: a case study for maize herbicides in Luxembourg
Passive sampler monitoring in surface waters can provide a complete sequence of pesticide event loads for an application season.
A global atmospheric chemistry model for the fate and transport of PFCAs and their precursors
Global model for the atmospheric chemistry of PFCA precursors.
Effects of surface tension time-evolution for CCN activation of a complex organic surfactant
Time-evolving partitioning effects on surface tension and bulk water activity cancel out in Köhler predictions of CCN activation of mixed NAFA–NaCl particles.
Emerging investigator series: use of behavioural endpoints in the regulation of chemicals
Suggestion for how the use of behavioral endpoints can improve in environmental risk assessment of chemicals.
Predicting Cr(VI) adsorption on soils: the role of the competition of soil organic matter
Surface complexation models can predict Cr(VI) adsorption on soils after accounting for the competition from the soil organic matter.
Potential emerging chemical risks in the food chain associated with substances registered under REACH
A screening procedure for the identification of potential emerging chemical risks in the food and feed chain developed in a previous EFSA-sponsored study was applied to 15021 substances registered under the REACH regulation at the time of evaluation.
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.
Risk-based water quality thresholds for coliphages in surface waters: effect of temperature and contamination aging
A quantitative microbial risk assessment framework is used to derive risk-based surface water quality thresholds for coliphages.
The determination of two emerging perfluoroalkyl substances and related halogenated sulfonic acids and their significance for the drinking water supply chain
Analytical methodologies were developed for two emerging PFAS, F3-MSA and HFPO-DA, in order to assess their occurrence and levels in Dutch and Belgian waters and evaluate human health risks due to their presence in drinking water.
Point source characterization of per- and polyfluoroalkyl substances (PFASs) and extractable organofluorine (EOF) in freshwater and aquatic invertebrates
Major point sources of per- and polyfluoroalkyl substances (PFASs) cause ubiquitous spread of PFASs in the environment.
Biomagnification of perfluoroalkyl acids (PFAAs) in the food web of an urban river: assessment of the trophic transfer of targeted and unknown precursors and implications
In the Orge River, the contribution of PFAA precursors decreases between the base and the top of the trophic web.
Children's exposure to perfluoroalkyl acids – a modelling approach
The present work assesses the exposure of a child cohort to PFOA, PFOS and PFHxS from 1 year to 10.5 years of age.
Partition coefficients of four perfluoroalkyl acid alternatives between bovine serum albumin (BSA) and water in comparison to ten classical perfluoroalkyl acids
Alternatives to long-chain PFAAs sorb similarly strongly to serum albumin as the classical PFAAs.
Electrochemical characterization of natural organic matter by direct voltammetry in an aprotic solvent
Improved methods for direct electrochemical characterization of a wide range of natural organic matter (NOM) samples dissolved in an aprotic solvent gives well defined peaks with similar peak breadths and potentials regardless of source, which probably reflects selectivity in the methods used to extract NOM from environmental samples.
N2O5 reactive uptake kinetics and chlorine activation on authentic biomass-burning aerosol
The reactive uptake kinetics of nitrogen pentoxide (N2O5) to authentic biomass-burning aerosol and the production of nitryl chloride (ClNO2) was determined using an entrained aerosol flow tube reactor.
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.
Emissions of DEHP from vehicle cabin materials: parameter determination, impact factors and exposure analysis
A VVR method is developed to measure the key parameters of DEHP from vehicular materials.
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.
Emerging investigator series: spatial distribution of dissolved organic matter in ice and at air–ice interfaces
Organic solutes in snow and ice can be distributed heterogeneously throughout the ice bulk and across the ice surface. This may affect air-surface interactions and heterogeneous reactions in snow-covered regions.
Mass balance study of brominated flame retardants in female captive peregrine falcons
Mass balance study in peregrine falcons showed efficient dietary uptake, bioaccumulation, transfer to eggs of tri–decaBDE, HBCDD; metabolism also indicated.
Uncertainty and equifinality in environmental modelling of organic pollutants with specific focus on cyclic volatile methyl siloxanes
We explore, for the first time, the concept of equifinality (similar model predictions from different parameter combinations) in MFTMs.
Analyzing a broader spectrum of endocrine active organic contaminants in sewage sludge with high resolution LC-QTOF-MS suspect screening and QSAR toxicity prediction
118 endocrine active compounds were identified in 14 sewage sludge samples using a new sample preparation method that extracts a broad range of compounds analyzed by high-resolution LC-QTOF-MS. Library screening matches were run in a predictive model to identify compounds likely to interfere with estrogen or other reproductive signaling.
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.