Talia E. Abbott Chalew

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The effects of ingestion of engineered nanoparticles (NPs), especially via drinking water, are unknown. Using NPs spiked into synthetic water and cell culture media, we investigated cell death, oxidative stress, and inflammatory effects of silver (Ag), titanium dioxide (TiO2), and zinc oxide (ZnO) NPs on human intestinal Caco-2 and SW480 cells. ZnO NPs were(More)
BACKGROUND Use of engineered nanoparticles (NPs) in consumer products is resulting in NPs in drinking water sources. Subsequent NP breakthrough into treated drinking water is a potential exposure route and human health threat. OBJECTIVES In this study we investigated the breakthrough of common NPs--silver (Ag), titanium dioxide (TiO2), and zinc oxide(More)
Nitrogen removal in agricultural treatment wetlands is determined by the health of macrophytes. Nitrogen is removed by microbes dependant on an oxic-anoxic boundary layer created by oxygen flow through macrophyte culms and by nitrogen sequestration in plant biomass. Phytotoxic ammonia concentrations can limit plant growth. Orthophosphate fertilization to(More)
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