Distribution and seasonal dynamics of arsenic in a shallow lake in northwestern New Jersey, USA
| Autor: | Timothy P. Wilson, Barbara Hirst, Kimberly Cenno, Zoltan Szabo, Marzooq Alebus, Julia L. Barringer, Jennifer L. Bonin, Terri Romagna, Todd Kratzer |
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| Rok vydání: | 2010 |
| Předmět: |
Conservation of Natural Resources
Geologic Sediments Copper Sulfate Environmental Engineering Arsenites chemistry.chemical_element Fresh Water Arsenic Bottom water chemistry.chemical_compound Water column Water Supply Geochemistry and Petrology Environmental Chemistry General Environmental Science Water Science and Technology Hydrology New Jersey Arsenate Sediment General Medicine Eutrophication Anoxic waters chemistry Alum Compounds Arsenates Environmental science Seasons Water quality Oxidation-Reduction Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Environmental Geochemistry and Health. 33:1-22 |
| ISSN: | 1573-2983 0269-4042 |
| DOI: | 10.1007/s10653-010-9289-7 |
| Popis: | Elevated concentrations of arsenic (As) occurred during warm months in water from the outlet of Lake Mohawk in northwestern New Jersey. The shallow manmade lake is surrounded by residential development and used for recreation. Eutrophic conditions are addressed by alum and copper sulfate applications and aerators operating in the summer. In September 2005, arsenite was dominant in hypoxic to anoxic bottom water. Filterable As concentrations were about 1.6–2 times higher than those in the upper water column (23–25 μg/L, mostly arsenate). Hypoxic/anoxic and near-neutral bottom conditions formed during the summer, but became more oxic and alkaline as winter approached. Acid-leachable As concentrations in lake-bed sediments ranged up to 694 mg/kg in highly organic material from the tops of sediment cores but were |
| Databáze: | OpenAIRE |
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