Levels and distribution of trace metals in surface sediments from Kongsfjorden, Svalbard, Norwegian Arctic

摘要

Trace metal contents (Cd, Co, Cr, Cu, Hg,Mn, Ni, Pb and Zn) have been measured in 27 surface sediment samples collected from Kongsfjorden, Svalbard, Norwegian Arctic. The analyses yielded concentration values (in mg kg~(-1) of 0.13-0.63 for Cd, 11.89-21.90 for Co, 48.65-81.84 for Cr, 21.26-36.60 for Cu, 299.59-683.48 for Mn, 22.43-35.39 for Ni, 10.68-36.59 for Pb, 50.28-199.07 for Zn and 8.09-65.34 for Hg (in ng g~(-1)), respectively. Relative cumulative frequency method has been used to define the baseline values of these metals, which (in mg kg~(-1)) were 0.14 for Cd, 13.56 for Co, 57.86 for Cr, 25.14 for Cu, 364.08 for Mn, 26.22 for Ni, 17.46 for Pb, 70.49 for Zn and 9.76 for Hg (in ng g~(-1)), respectively. The enrichment factor analysis indicated that Hg showed some extent of anthropogenic pollution, while Pb, Zn and Cd showed limited anthropogenic contamination in the study areas.