A5049962296- Environmental Toxicology and Ecotoxicology
- Toxic Organic Pollutants Impact
- Microplastics and Plastic Pollution
- Pharmaceutical and Antibiotic Environmental Impacts
- Nanoparticles: synthesis and applications
- Heavy metals in environment
- Recycling and Waste Management Techniques
- Marine Biology and Environmental Chemistry
- Pesticide and Herbicide Environmental Studies
- Graphene and Nanomaterials Applications
- Environmental Chemistry and Analysis
- Marine Biology and Ecology Research
- Effects and risks of endocrine disrupting chemicals
- Environmental DNA in Biodiversity Studies
- Water Quality Monitoring and Analysis
- Fish Ecology and Management Studies
- Microbial bioremediation and biosurfactants
- Aquatic Invertebrate Ecology and Behavior
- Mercury impact and mitigation studies
- Microbial Community Ecology and Physiology
- Analytical chemistry methods development
- Chemistry and Chemical Engineering
- Heavy Metal Exposure and Toxicity
- Carbon and Quantum Dots Applications
- Water Treatment and Disinfection
Environmental Protection Agency
2015-2024
Environmental Protection Agency
2022
Southern California Coastal Water Research Project
2022
University of Rhode Island
1993-2009
National Oceanic and Atmospheric Administration
2009
United States Geological Survey
1983
About 3 billion new tires are produced each year and about 800 million become waste annually. Global dependence upon from natural rubber petroleum-based compounds represents a persistent complex environmental problem with only partial often-times, ineffective solutions. Tire emissions may be in the form of whole tires, tire particles, chemical compounds, which is transported through various atmospheric, terrestrial, aquatic routes built environments. Production use generates multiple heavy...
Abstract Phototoxicity resulting from photoactivated polycyclic aromatic hydrocarbons (PAHs) has been reported in the literature for a variety of freshwater organisms. The magnitude increase PAH toxicity often exceeds factor 100. In marine environment phototoxicity to organisms not individual or complex mixtures PAHs. this study, larvae and juveniles bivalve, Mulinia lateralis , mysid shrimp, Mysidopsis bahia were exposed known phototoxic PAHs (anthracene, fluoranthene, pyrene), as well...
The behavior and fate of nanoparticles (NPs) in the marine environment are largely unknown potentially have important environmental human health implications. aggregation NPs greatly influenced by their interactions with seawater dissolved organic carbon (DOC). In present study, stability 30-nm-diameter silver (AgNPs) capped citrate polyvinylpyrrolidone (PVP; AgNP-citrate AgNP-PVP) 21-nm-diameter titanium dioxide (TiO(2)) as affected salinity DOC were investigated measuring hydrodynamic...
The toxicity, bioaccumulation, and biotransformation of citrate polyvinylpyrrolidone (PVP) coated silver nanoparticles (NPs) (AgNP-citrate AgNP-PVP) in marine organisms via sediment exposure was investigated. Results from 7-d toxicity tests indicate that AgNP-citrate AgNP-PVP did not exhibit to the amphipod (Ampelisca abdita) mysid (Americamysis bahia) at ≤75 mg/kg dry wt. A 28-d bioaccumulation study showed Ag significantly accumulated polychaete Nereis virens (N. virens) AgNP-citrate, a...
Strategies are provided for making robust measurements of engineered nanomaterial bioaccumulation across a broad range organisms.
Abstract Microscopic organisms are often overlooked in traditional diversity assessments due to the difficulty of identifying them based on morphology. Metabarcoding is a method for rapidly where Environmental DNA (eDNA) used as template. However, legacy problematically detected from no longer environment during sampling. RNA (eRNA), which only produced by living organisms, can also be collected environmental samples and metabarcoding. The aim this study was determine differences community...
As the use of single-walled carbon nanotubes (SWNTs) increases over time, so does potential for environmental release. This research aimed to determine toxicity, bioavailability, and bioaccumulation SWNTs in marine benthic organisms at base food chain. The toxicity was tested a whole sediment exposure with amphipod Ampelisca abdita mysid Americamysis bahia. In addition, were amended and/or matrices their bioavailability through these routes A. abdita, bahia, estuarine Leptocheirus...
Abstract Ecotoxicological information for most contaminants is limited to a small number of taxa, and these are generally restricted comparatively hardy organisms that readily extractable from test media easily identifiable. Advances in DNA sequencing can now provide comprehensive view benthic invertebrate diversity. The authors applied 454 pyrosequencing examine the responses communities microcosms exposed sediments with elevated concentrations triclosan, endpoint being eukaryl have...
Little is known about environmental biodegradability or biotransformations of single-walled carbon nanotubes (SWNT). Because their strong association with aquatic organic matter, detailed knowledge the ultimate fate and persistence SWNT requires investigation possible (i.e., biodegradation) in media. In present study, [(14)C]SWNT were utilized to track biodegradation over 6 mo by pure liquid culture fungus Trametes versicolor mixed bacterial isolates from field-collected sediment aerated...
Abstract New Bedford Harbor (NBH) is a marine Superfund site contaminated with high concentrations of polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), and metals. Experiments were conducted to determine the causal toxic agent(s) in pore waters from sediments amphipods mysid shrimp. Chemical manipulations characterize toxicity revealed that pore-water was organic nature. Fractionation subsequent mass spectral identification peaks fraction indicated PCBs, PAHs,...
Polyethylene sampler uptake was compared to polychaete assess bioavailability of polychlorinated biphenyls (PCBs) from resuspended sediments. New Bedford Harbor (MA, U.S.) sediment, contaminated with PCBs, under four different water column oxidation conditions: resuspension alone, aeration, helium, and no (control). Residuals were tested for differences in PCB availability the marine Nereis virens polyethylene (PE) passive samplers. Few significant between treatments observed: three 23 PCBs...