A5102011090- Heavy metals in environment
- Mercury impact and mitigation studies
- Toxic Organic Pollutants Impact
- Geology and Paleoclimatology Research
- Fuel Cells and Related Materials
- Nanoparticles: synthesis and applications
- Membrane Separation and Gas Transport
- Heavy Metal Exposure and Toxicity
- Atmospheric and Environmental Gas Dynamics
- Environmental Justice and Health Disparities
- Cryospheric studies and observations
- Radioactivity and Radon Measurements
- Isotope Analysis in Ecology
- Petroleum Processing and Analysis
- Extraction and Separation Processes
- Anodic Oxide Films and Nanostructures
- Atmospheric Ozone and Climate
- Aquatic Invertebrate Ecology and Behavior
- Geochemistry and Geologic Mapping
- Pleistocene-Era Hominins and Archaeology
- Vehicle emissions and performance
- Atmospheric chemistry and aerosols
- Hydrocarbon exploration and reservoir analysis
- Air Quality and Health Impacts
UK Centre for Ecology & Hydrology
2025
University College London
2023-2024
Environment and Climate Change Canada
2019-2021
Environmental Protection Agency
2021
University of Colorado Boulder
1999-2000
Cores from Searsville Lake within Stanford University's Jasper Ridge Biological Preserve, California, USA, are examined to identify a potential GSSP for the Anthropocene: core JRBP2018-VC01B (944.5 cm-long) and tightly correlated JRBP2018-VC01A (852.5 cm-long). Spanning 1900 CE ± 3 years 2018 CE, secure chronology resolved sub-annual level allows detailed exploration of Holocene-Anthropocene transition. We primary marker as first appearance 239,240Pu (372-374 cm) in designate depth distinct...
Soil species sensitivity distributions developed for silver nanomaterials (AgNMs) soils and liquid exposures using chronic no observed effect concentrations (NOEC).
Atmospheric nitrogen oxide and dioxide (NO + NO2, together termed as NOX) estimates from annual photochemical simulations for years 2002–2016 are compared to surface network measurements of NOX total gas-phase-oxidized reactive (NOY) evaluate the Community Multiscale Air Quality (CMAQ) modeling system performance by U.S. region, season, time day. In addition, aircraft 2011 Deriving Information on Surface Conditions Column Vertically Resolved Observations Relevant used how emissions, chemical...
The remote Antarctic continent, distant from human industrial activity, should be one of the last places on Earth to capture Anthropogenic change. Hence, stratigraphic evidence pollution and nuclear activity in provides proof global nature Anthropocene epoch. We propose an Peninsula ice core candidate for Global boundary Stratotype Section Point (GSSP) onset Anthropocene. Palmer captures first spheroidal carbonaceous fly ash particles (SCPs), resulting high temperature combustion deposited...
Mercury (Hg) is a pollutant of concern across Canada and transboundary anthropogenic Hg sources presently account for over 95% national deposition. This study applies novel statistical analyses 82 high-resolution dated lake sediment cores collected from 19 regions Canada, including nearby point in remote spanning full west-east geographical range ∼4900 km (south 60°N between 132 64°W) to quantify the recent (1990-2018) spatial temporal trends atmospheric Temporal trend analysis shows...
The Crawford Lake sedimentary sequence in Milton, Ontario, Canada, has been chosen as the Global Boundary Stratotype Section and Point (GSSP) for proposed Anthropocene Series/Epoch, with its inception occurring at 1952 CE mid-20th century. This consists of seasonally deposited layers organic matter capped by summer-deposited calcite, forming alkaline surface waters when pH temperature rise above 7.76 ~15°C, respectively. These sediments preserve a range proxies that mirror...
A method to identify polymers that are potentially useful for membrane separations has been developed by examining gas chromatography (GC) retention data. Promising stationary phases were identified, and with similar structures obtained deposited into inorganic supports. Polymers identified separate ketones alcohols from hydrocarbons. The polymer/inorganic composite membranes synthesized this research characterized IR spectroscopy scanning electron microscopy. Favorable fluxes high factors...