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Full-Text Articles in Pharmacology, Toxicology and Environmental Health
Assessing Microplastic Pollution In Four Mile Run, An Urban Stream In Northern Virginia, Kurt Moser, Tessa Naughton-Rockwell, Louisa Wang, Ethan Litmans, Amanda Manoogian
Assessing Microplastic Pollution In Four Mile Run, An Urban Stream In Northern Virginia, Kurt Moser, Tessa Naughton-Rockwell, Louisa Wang, Ethan Litmans, Amanda Manoogian
Virginia Journal of Science
Microplastics are pollutants of concern in waterways and oceans for their persistence and impact on aquatic life and food webs. This study demonstrates a low-cost land-based sampling method to assess the extent of microplastic pollution found in Four Mile Run, an urban stream in Northern Virginia. Microplastic particle counts in environmental and treated wastewater ranged from 0.01-0.24 particles L-1 (mean 0.08 particles L-1) and from 2 to 446 µg L-1 (mean 70 µg L-1), with fibers found to be the most common microplastic category. Treated wastewater effluent was found to be a significant source …
Reactions Of Organic N-Chloramines In The Gastric Fluid Of The Rat, Kathryn E. Mazina
Reactions Of Organic N-Chloramines In The Gastric Fluid Of The Rat, Kathryn E. Mazina
Chemistry & Biochemistry Theses & Dissertations
Using chlorine as a drinking water disinfectant may have potential health effects due to its reactivity with organic amino nitrogen compounds found in the stomach. Organic N-chloramines have been shown to form in the stomachs of laboratory rats. The possible reactions of N-chloramines in the stomach fluid were examined in this study using a model radiolabeled N-chloramine. 36Cl-N-Chloropiperidine, was synthesized and purified to remove 36Cl-chloride. Stomach fluid was obtained from Sprague-Dawley rats which had been first fasted for 24 or 48 hours and then administered 3 mL of deionized water. Different concentrations of radiolabeled chloramine were reacted with …