PCNs, PCDD/Fs, and non-orthoPCBs, in water and bottom sediments from the industrialized Norwegian Grenlandsfjords.
Chlorinated toxic planar aromatic compounds were analyzed in the heavily industrialized Grenlandsfjords, which is a system of silled fjords in southern Norway. Surface water samples contained 7.4-160 ng/m3 polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs), 14-410 ng/m3 polychlorinated naphthalenes (PCNs), and 0.31-2.4 ng/m3 non-orthochlorinated biphenyls (non-orthoPCBs). The concentrations of PCDD/Fs were about 300 times higher than in the Baltic Sea. Highest level of the compounds wasfound near a magnesium production plant Hepta-CDFs and penta-CNs dominated in the inner-fjord waters, and tetra-CB 77 was the major non-orthoPCB congener. Sediment samples had PCDD/F concentration of 25-730 ng/g dw. Highest concentration was detected close to the magnesium plant. Octa-CDFdominated in the fjord sediments, especially near the magnesium plant indicating a discharge-specific contamination with this congener. The isomer composition of PCDD/Fs and of PCNs, was unchanged when comparing samples from different layers of a sediment core from the deep anoxic water. This concludes that essentially zero degradation had occurred during approximately 50 years in this environment.
Ishaq
R
R
Department of Applied Environmental Science, Stockholm University, SE-106 91 Stockholm, Sweden. rasha.ishaq@lansstyrelsen.se
Persson
N J
NJ
Zebühr
Y
Y
Broman
D
D
Naes
K
K
D001572:Benzofurans / Q000032:analysis* / Q000633:toxicity; D004147:Dioxins / Q000032:analysis* / Q000633:toxicity; D005618:Fresh Water / Q000737:chemistry*; D019015:Geologic Sediments / Q000737:chemistry*; D007221:Industry; D009281:Naphthalenes / Q000032:analysis* / Q000633:toxicity; D009664:Norway; D011078:Polychlorinated Biphenyls / Q000032:analysis* / Q000633:toxicity; D014874:Water Pollutants, Chemical / Q000633:toxicity
D001572:Benzofurans; D004147:Dioxins; D009281:Naphthalenes; D014874:Water Pollutants, Chemical; C023614:dibenzofuran; D011078:Polychlorinated Biphenyls