Gambardella, Chiara Miroglio, Roberta Costa, Elisa Cachot, Jérôme Morin, Benedicte Clerandeau, Christelle Rotander, Anna Rocco, Kevin d'Errico, Giuseppe Almeda, Rodrigo
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The impact of leachates from micronized beached plastics of the Mediterranean Sea and Atlantic Ocean on coastal marine ecosystems was investigated by using a multidisciplinary approach. Chemical analysis and ecotoxicological tests on phylogenetically distant species were performed on leachates from the following plastic categories: bottles, pellets...
Redman, Zachary C Begley, Jessica L Hillestad, Isabel DiMento, Brian P Stanton, Ryan S Aguaa, Alon R Pirrung, Michael C Tomco, Patrick L
The photochemical degradation pathways of 6PPD-quinone (6PPDQ, 6PPD-Q), a toxic transformation product of the tire antiozonant 6PPD, were determined under simulated sunlight conditions typical of high-latitude surface waters. Direct photochemical degradation resulted in 6PPDQ half-lives ranging from 17.5 h at 20 °C to no observable degradation over...
Thorgersen, Michael P Goff, Jennifer L Poole, Farris L Walker, Kathleen F Putt, Andrew D Lui, Lauren M Hazen, Terry C Arkin, Adam P Adams, Michael WW
Environmental contamination constrains microbial communities impacting diversity and total metabolic activity. The former S-3 Ponds contamination site at Oak Ridge Reservation (ORR), TN, has elevated concentrations of nitric acid and multiple metals from decades of processing nuclear material. To determine the nature of the metal contamination in t...
Duan, Yanghua Jiang, Wenli Sedlak, David L
Low-cost stainless-steel electrodes can activate hydrogen peroxide (H2O2) by converting it into a hydroxyl radical (•OH) and other reactive oxidants. At an applied potential of +0.020 V, the stainless-steel electrode produced •OH with a yield that was over an order of magnitude higher than that reported for other systems that employ iron oxides as ...
Tan, Cheng Liu, Haizhou
In drinking water distribution systems, the oxidation of zerovalent chromium, Cr(0), in iron corrosion scales by chlorine residual disinfectant is the dominant reaction to form carcinogenic hexavalent chromium, Cr(VI). This study investigates inhibitive corrosion control strategies through adjustments of chemical water parameters (i.e., pH, silicat...
Stiegler, Angela Cecchetti, Aidan Scholes, Rachel Sedlak, David
Subsurface treatment systems, such as constructed wetlands, riverbank filtration systems, and managed aquifer recharge systems, offer a low-cost means of removing trace organic contaminants from treated municipal wastewater. To assess the processes through which trace organic contaminants are removed in subsurface treatment systems, pharmaceuticals...
Wiegand, Jenna Hoang, John Avila-Barnard, Sarah Nemarugommula, Charvita Ha, Megan Zhang, Sharon Stapleton, Heather Volz, David
Triphenyl phosphate (TPHP) - a widely used organophosphate-based flame retardant - blocks cardiac looping during zebrafish development in a concentration-dependent manner, a phenotype that is dependent on disruption of embryonic osmoregulation and pericardial edema formation. However, its currently unclear whether (1) TPHP-induced effects on osmore...
Krabbenhoft, David Tate, Michael Baldwin, Austin Naymik, Jesse Gastelecutto, Nick McMahon, Katherine Poulin, Brett Peterson, Ben
Brownlee Reservoir is a mercury (Hg)-impaired hydroelectric reservoir that exhibits dynamic hydrological and geochemical conditions and is located within the Hells Canyon Complex in Idaho, USA. Methylmercury (MeHg) contamination in fish is a concern in the reservoir. While MeHg production has historically been attributed to sulfate-reducing bacteri...
Thornton Hampton, Leah De Frond, Hannah Gesulga, Kristine Kotar, Syd Lao, Wenjian Matuch, Cindy Weisberg, Stephen Wong, Charles Brander, Susanne Christansen, Silke
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Previous studies have evaluated method performance for quantifying and characterizing microplastics in clean water, but little is known about the efficacy of procedures used to extract microplastics from complex matrices. Here we provided 15 laboratories with samples representing four matrices (i.e., drinking water, fish tissue, sediment, and surfa...
Gómez, Victoria A Pozo, Karla Clerandeau, Christelle Cachot, Jérôme Montes, Caroline Přibylová, Petra Glabán-Malagón, Cristóbal Clarke, Bradley Klanova, Jana Morin, Benedicte
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The chemical components of plastic wastes have made their disposal a major economic, social, and environmental problem worldwide. This study evaluated the acute toxicity and genotoxicity of marine plastic debris on the beaches of Concepción Bay, Central Chile, taken during three periods (spring, summer, and winter). An integrated approach was used,...
