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.
Accuracy of methods for reporting inorganic element concentrations and radioactivity in oil and gas wastewaters from the Appalachian Basin, U.S. based on an inter-laboratory comparison
Results from this inter-laboratory comparison indicate that O&G waste analyses can be inaccurate and imprecise.
Exploring matrix effects and quantifying organic additives in hydraulic fracturing associated fluids using liquid chromatography electrospray ionization mass spectrometry
Liquid chromatography electrospray ionization mass spectrometry was used to quantify chemical additives in water collected from unconventional shale gas wells.
Impact of bisphenol A influent concentration and reaction time on MnO2 transformation in a stirred flow reactor
This study combines analysis of both organic and inorganic components in bisphenol A oxidation by MnO2 in a stirred flow reactor.
Per- and polyfluoroalkyl substances and fluorine mass balance in cosmetic products from the Swedish market: implications for environmental emissions and human exposure
Occurrence of PFASs, total fluorine and extractable organic fluorine in cosmetic products and their importance to human and environmental exposure.
Modeling coupled kinetics of antimony adsorption/desorption and oxidation on manganese oxides
We developed a quantitative model for assessing the coupling between Sb(III) oxidation and Sb(III)/Sb(V) adsorption/desorption kinetics at the MnO2–water interface.
Development of a hydrophilic interaction liquid chromatography (HILIC) method for the chemical characterization of water-soluble isoprene epoxydiol (IEPOX)-derived secondary organic aerosol
A developed non-thermal analytical method effectively resolves and quantifies major IEPOX-SOA components in PM2.5.
Emerging investigator series: determination of biphasic core–shell droplet properties using aerosol optical tweezers
Algorithm to fit whispering gallery modes retrieves biphasic properties.
The role of alkalinity in setting water quality metrics: phosphorus standards in United Kingdom rivers
UK implementation of the European Union Water Framework Directive (for the 2015–2021 cycle) Ecological Status (ES) classification for river phosphorus is based on the calculation of reference conditions for reactive phosphorus (RP) using river alkalinity measurements.
Understanding factors influencing the detection of mercury policies in modelled Laurentian Great Lakes wet deposition
Challenges for detecting sub-decadal policy-related changes in mercury wet deposition in the Great Lakes are identified through modelling.
Reduction of PCE and TCE by magnetite revisited
Magnetite is unlikely to be as important as previously thought for abiotic reduction of PCE and TCE in groundwater plumes.
Charge-assisted hydrogen bonding as a cohesive force in soil organic matter: water solubility enhancement by addition of simple carboxylic acids
Solubility experiments suggest that very strong hydrogen bonds between weak acid functional groups play an important role in organic matter cohesion.
Lead and zinc concentrations in household dust and toenails of the residents (Estarreja, Portugal): a source-pathway-fate model
This paper describes a methodology developed to assess and apportion probable indoor and outdoor sources of potentially toxic elements while identifying chemical signatures in the household dust collected from private homes in an industrial city (Estarreja, central Portugal).
Effects of room airflow on accurate determination of PUF-PAS sampling rates in the indoor environment
Accurate and precise interpretation of concentrations from polyurethane passive samplers (PUF-PAS) is important as more studies show elevated concentrations of PCBs and other semivolatile air toxics in indoor air of schools and homes.
Emerging investigator series: methylmercury speciation and dimethylmercury production in sulfidic solutions
Experimental and computational evidence show that dimethylmercury is produced from decomposition of bis(methylmercury(II)) sulfide.
Temporal trends of halogenated flame retardants in the atmosphere of the Canadian Great Lakes Basin (2005–2014)
Temporal and spatial trends of total air concentrations (gas + particle) of halogenated flame retardants at the Canadian Great Lakes Basin were assessed (2005–2014).
Effect of secondary organic aerosol from isoprene-derived hydroxyhydroperoxides on the expression of oxidative stress response genes in human bronchial epithelial cells
Composition of isoprene-derived SOA affects its ability to alter oxidative stress-related gene expression.
Responses of deposition and bioaccumulation in the Great Lakes region to policy and other large-scale drivers of mercury emissions
The effect of policy on fish mercury levels varies spatially, even within the Great Lakes Basin.
Passive sampling of DDT, DDE and DDD in sediments: accounting for degradation processes with reaction–diffusion modeling
Applying passive sampling to reactive species may be a way to obtain information about in situ reactivity of compounds in sediments that occur on timescales of days to months.
Evaluating parameter availability for physiologically based pharmacokinetic (PBPK) modeling of perfluorooctanoic acid (PFOA) in zebrafish
Physiologically based pharmacokinetic (PBPK) models are considered useful tools to describe the absorption, distribution, metabolism and excretion of xenobiotics.
Calibration and evaluation of PUF-PAS sampling rates across the Global Atmospheric Passive Sampling (GAPS) network
Here we present and evaluate a method to determine PUF-PAS sampling rates (RS), and the effective sampling volume (Veff), for gas-phase chemical compounds deployed anywhere in the world.
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.