A5022819493- Toxic Organic Pollutants Impact
- Iron oxide chemistry and applications
- Analytical chemistry methods development
- Mine drainage and remediation techniques
- Groundwater flow and contamination studies
- Arsenic contamination and mitigation
- Mass Spectrometry Techniques and Applications
- Computational Drug Discovery Methods
- Effects and risks of endocrine disrupting chemicals
- Water Quality and Resources Studies
- Analytical Chemistry and Chromatography
- Air Quality and Health Impacts
- Oil Spill Detection and Mitigation
- Microplastics and Plastic Pollution
- Water Quality Monitoring and Analysis
- Advanced Chemical Sensor Technologies
- Geochemistry and Geologic Mapping
- Microbial bioremediation and biosurfactants
- Pesticide Residue Analysis and Safety
- Mineralogy and Gemology Studies
- Environmental Toxicology and Ecotoxicology
Gradient (United States)
2018-2021
Massachusetts Institute of Technology
2009-2018
Woods Hole Oceanographic Institution
2011-2015
Parsons (United States)
2009-2015
To assess hydrophobic organic chemical (HOC) contamination in sediments, a method was developed using polyethylene (PE) passive samplers inserted directly the intact sediment beds to measure freely dissolved HOC concentrations. Performance reference compounds (PRCs: d10-phenanthrene, d10-pyrene, and d12-chrysene), impregnated into PE before use, allowed porewater concentrations be deduced after exposure times much shorter than would required for sampler equilibration (days instead of...
Abstract Understanding the transfer of chemicals between passive samplers and water is essential for their use as monitoring devices organic contaminants in surface waters. By applying Fick's second law to diffusion through polymer an aqueous boundary layer, authors derived a mathematical model uptake into sampler from water, finite infinite bath conditions. The performed well when applied laboratory observations sorption polyethylene (PE) sheets various (polycyclic aromatic hydrocarbons,...
Polymeric passive samplers have become a common method for estimating freely dissolved concentrations in environmental media. However, this approach has not yet been adopted by investigators conducting remedial investigations of contaminated sites. Successful adoption sampling methodology relies on an understanding how accumulate chemical mass as well developing guidance the design and deployment samplers. Herein, we outline development simple mathematical relationship environmental,...
Recent studies have shown that membrane–water partition coefficients of organic chemicals can be used to predict bioaccumulation and type I narcosis toxicity more accurately than the traditional KOW-based approach. In this paper, we demonstrate how comprehensive two-dimensional gas chromatography (GC × GC) estimate such (KPLWs), focusing in particular on phosphatidyl choline based lipids. This method performed well for a set 38 compounds, including polycyclic aromatic hydrocarbons,...
Passive sampling is becoming a widely used tool for assessing freely dissolved concentrations of hydrophobic organic contaminants in environmental media. For certain media and target analytes, the time to reach equilibrium exceeds deployment time, such cases, loss performance reference compounds (PRCs), loaded sampler before deployment, one common ways assess fractional equilibration analytes. The key assumption behind use PRCs that their release solely diffusion driven. But this work, we...