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Uptake Of Nanoparticles Of Cerium Oxide And Yttrium Oxide By Acanthamoeba Castellanii (Protozoa) And Daphnia Magna (Crustacea), James R. Palmieri, Geneva Gehring, Catherine Minichino, Shaadi F. Elswaifi
Uptake Of Nanoparticles Of Cerium Oxide And Yttrium Oxide By Acanthamoeba Castellanii (Protozoa) And Daphnia Magna (Crustacea), James R. Palmieri, Geneva Gehring, Catherine Minichino, Shaadi F. Elswaifi
Virginia Journal of Science
Currently, nanoparticles are synthesized and used at an unprecedented rate for industrial, medical, and research applications. The use of cerium oxide nanoparticles (CeONP) and yttrium oxide nanoparticles (YtONP) results in their spread as contaminants into the environment. Once in the environment, CeONP and YtONP can be taken up by organisms in the food chain where they may pose a public health risk. In this study we determine whether Acanthamoeba castellanii and Daphnia magna uptake CeONP or YtONP from their environment and thereby play a role in the transmission of the nanoparticles. Using electron microscopy, orgranisms exposed to the nanoparticles were …
Virginia's Pfiesteria Monitoring Program: Water Quality, Roger K. Everton, Wick T. Harlan, Jonathan W. Priest, Mark S. Alling
Virginia's Pfiesteria Monitoring Program: Water Quality, Roger K. Everton, Wick T. Harlan, Jonathan W. Priest, Mark S. Alling
Virginia Journal of Science
During the summer and early fall of 1998, 34 estuarine stations in Virginia were sampled for Pfiesteria like organisms (PLOs) and associated water quality conditions. Stations were sampled either bimonthly (20 stations) or monthly (14 stations) from June to October 1998. At each station, a set of live and Lugol' s preserved samples were collected for presumptive counts of PLOs and water quality conditions were determined. Water quality parameters measured included standard field parameters, nutrients (total, dissolved, and particulate), chlorophyll a, and conventional water quality indicators. Although PLOs were relatively low in 1998 as compared to 1997, presumptive PLO counts …