Spatial and temporal aspects of sedimentary trace metal concentrations in mid-coast Maine
作者： Peter Foster Larsen , Henri E. Gaudette
DOI: 10.1016/0025-326X(94)00129-W
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摘要: The concentrations of Cd, Cr, Cu, Ni, Pb, Sn and Zn in the surface sediments 41 stations mid-coast Maine region Gulf were determined. 14 located Casco Bay had previously been surveyed 1980. Metal distributed heterogeneously between subregions study area, generally exceeded pre-industrial levels. Highest levels occurred Booth Bay, where comparisons with National Status Trends Program database conservatively placed Cu Pb top quadrile sites nationwide. Spatial distributions consistent transport from large Kennebec-Androscoggin watershed, supplemented by localized inputs. Within appeared to have declined since 1980, while Ni was unchanged increased throughout entire Bay.
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