Distribution patterns of metals in sediments of the Great Sound complex, New Jersey
| Autor: | Joseph E. Nadeau, Mary Jo Hall |
|---|---|
| Rok vydání: | 1988 |
| Předmět: |
chemistry.chemical_classification
Pollution Hydrology geography geography.geographical_feature_category media_common.quotation_subject Mineralogy Sediment Geology Oceanography Inlet Spatial distribution Dredging chemistry Geochemistry and Petrology Organic matter Channel (geography) Sound (geography) media_common |
| Zdroj: | Marine Geology. 82:113-122 |
| ISSN: | 0025-3227 |
| DOI: | 10.1016/0025-3227(88)90010-2 |
| Popis: | Fifty-four bottom grab samples and six 1 m cores were collected from a back-barrier lagoonal complex on the mixed energy, tide-dominated coastline of southern New Jersey. The lagoon is connected to the ocean through tidal inlets to the north and south, and is transected by the Intracoastal Waterway. Samples were wet sieved to separate the μ m fraction which was digested and analyzed for Ag, As, Cd, Co, Cu, Fe, Hg, Pb and Zn concentrations. Metals are commonly associated with the μ m fraction and/or organic fractions in sediments; however, in Great Sound both are more widely distributed than the area of high metal concentration. The areal distribution pattern of metals, supported by Roy's Maximum Root statistical evaluation, indicates that the avenue of metal access (except for Fe) to Great Sound is via Great Channel with the more likely route through Cresse Thorofare and/or via Gull Island Thorofare after the bifurcation of Great Channel. Analysis of cores revealed two vertical distribution patterns: (1) Cores recovered adjacent to the Intracoastal Waterway show a decrease in concentration with depth, while (2) cores from sites removed from the Intracoastal Waterway show multiple peaks interpreted to be caused by dredging and/or tidal redistribution of sediments. Access of Fe and organics to Great Sound could not be determined. |
| Databáze: | OpenAIRE |
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