Trace Metals and Hydrocarbons in Sediments of the Beaufort Lagoon, Northeast Arctic Alaska, Exposed to Long-Term Natural Oil Seepage, Recent Anthropogenic Activities and Pristine Conditions PDF Download
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Author: Institute of Institute of Marine Science Publisher: CreateSpace ISBN: 9781514284667 Category : Languages : en Pages : 64
Book Description
There is a concern that anthropogenic contaminants discharged during petroleum-related activities can accumulate in the Beaufort Lagoon sediments. In response to this concern, concentrations of 12 metals were analyzed [copper (Cu), chromium (Cr), cadmium (Cd), nickel (Ni), vanadium (V), lead (Pb), tin (Sn), zinc (Zn), arsenic (As), barium (Ba), iron (Fe), and manganese (Mn)] in the mud fraction and total mercury (THg) and hydrocarbons [saturated compounds such as normal and isoprenoid alkanes, triterpanes, steranes and polycyclic aromatic hydrocarbons (PAHs)] determined in gross sediments collected at 22 locations at the lagoon and in one natural oil seep.
Author: Institute of Institute of Marine Science Publisher: CreateSpace ISBN: 9781514284667 Category : Languages : en Pages : 64
Book Description
There is a concern that anthropogenic contaminants discharged during petroleum-related activities can accumulate in the Beaufort Lagoon sediments. In response to this concern, concentrations of 12 metals were analyzed [copper (Cu), chromium (Cr), cadmium (Cd), nickel (Ni), vanadium (V), lead (Pb), tin (Sn), zinc (Zn), arsenic (As), barium (Ba), iron (Fe), and manganese (Mn)] in the mud fraction and total mercury (THg) and hydrocarbons [saturated compounds such as normal and isoprenoid alkanes, triterpanes, steranes and polycyclic aromatic hydrocarbons (PAHs)] determined in gross sediments collected at 22 locations at the lagoon and in one natural oil seep.
Author: A. Sathy Naidu Publisher: CreateSpace ISBN: 9781514724255 Category : Languages : en Pages : 64
Book Description
There is a concern that anthropogenic contaminants discharged during petroleum- related activities can accumulate in the Beaufort Lagoon sediments. In response to this concern, concentrations of 12 metals were analyzed [copper (Cu), chromium (Cr), cadmium (Cd), nickel (Ni), vanadium (V), lead (Pb), tin (Sn), zinc (Zn), arsenic (As), barium (Ba), iron (Fe), and manganese (Mn)] in the mud fraction and total mercury (THg) and hydrocarbons [saturated compounds such as normal and isoprenoid alkanes, triterpanes, steranes and polycyclic aromatic hydrocarbons (PAHs)] determined in gross sediments collected at 22 locations at the lagoon and in one natural oil seep.
Author: Arthur D. Little, Inc Publisher: ISBN: Category : Benthos Languages : en Pages :
Book Description
Reports on a study conducted in 1989 to monitor the marine environment of the Alaskan Beaufort Sea for inputs of chemicals related to oil and gas drilling and exploration. Sediments and selected benthic organisms (bivalve molluscs) were monitored for trace metals and hydrocarbons.
Author: Isabel Vicenta Schaal Publisher: ISBN: Category : Biogeochemical cycles Languages : en Pages : 0
Book Description
Subterranean estuaries (STEs) can be an important location for biogeochemical reactions that may alter concentrations of chemical constituents of groundwater. With warming in the Arctic and the subsequent permafrost thaw, the relative importance of submarine groundwater discharge (SGD) to ocean chemical budgets will grow. In this study, we examined the distribution of select trace metals (Fe, Mn, V, U, Mo and Ba) in the STE, lagoon surface waters, and coastal sediments of Simpson Lagoon along the Beaufort Shelf of Alaska. This location is unique among studies as the STE consists of organic-rich sediments. Samples were collected over two years and throughout seasonal water conditions, including the melting, open-water, and freeze-up periods. Fe, Mn, V, and Ba mainly exhibited non-conservative additions within the estuary, with Fe concentrations being some of the highest among groundwater studies. U exhibited both non-conservative removal and addition in the estuary, and Mo exhibited mainly removal. In the lagoon, non-conservative addition of U allowed for the calculation of an SGD flux. This flux, along with a Ra-derived flux, was used to estimate metal fluxes into the lagoon. Fluxes for all metals were similar to or greater than river flux estimates in all months except for June, when SGD was likely nonexistent. These fluxes can be used to assess SGD impact on the coastal Arctic; however, for reactive metals, processes in the lagoon may continue to alter metal concentrations before mixing with the greater Arctic Ocean. This study provides some of the first estimates of trace metal concentrations and fluxes within Arctic subterranean estuaries and exhibits the importance of considering SGD when assessing metal input to the coastal Arctic.
Author: Institute of Institute of Marine Science
Author: Institute of Institute of Marine Science
Author: A. Sathy Naidu
Author: A. Sathy Naidu
Author: Angi Satyanarayan Naidu
Author: 
Author: United States. Bureau of Ocean Energy Management
Author: A. Sathy Naidu
Author: Angi Satyanarayan Naidu
Author: Arthur D. Little, Inc
Author: Isabel Vicenta Schaal