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Measurements of nitrogen dioxide in Greenland using Palmes diffusion tubes.

https://arctichealth.org/en/permalink/ahliterature195358
Source
J Environ Monit. 2001 Feb;3(1):139-45
Publication Type
Article
Date
Feb-2001
Author
T S Hansen
M. Kruse
H. Nissen
M. Glasius
C. Lohse
Author Affiliation
University of Southern Denmark, Department of Chemistry, Odense M. tsh@chem.sdu.dk
Source
J Environ Monit. 2001 Feb;3(1):139-45
Date
Feb-2001
Language
English
Publication Type
Article
Keywords
Air Pollution - analysis
Diffusion
Environmental monitoring
Greenland
Humans
Motor Vehicles
Nitrogen Dioxide - analysis
Urban Population
Abstract
Measurements of nitrogen dioxide using the Palmes diffusion tubes in Uummannaq, Aasiaat, and Nuuk. all located along the west-coast of Greenland, have demonstrated that the levels of pollution at the most heavily impacted sites are comparable to levels in much larger towns in Denmark. The highest concentrations were, in general, observed near sites influenced by car traffic (peak concentrations of up to 16 ppbv), medium concentrations were observed in the residential areas (2 6 ppbv), and very low levels were found at the background locations in the town outskirts (1-2 ppbv). Observations of nitrogen dioxide concentrations less than 0.1 ppbv at a remote site, Akia, 25 km from Nuuk, indicate that, compared to local sources, long-range transport of nitrogen dioxide is not important in western Greenland.
PubMed ID
11253007 View in PubMed
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Regional and inter annual patterns of heavy metals, organochlorines and stable isotopes in narwhals (Monodon monoceros) from West Greenland.

https://arctichealth.org/en/permalink/ahliterature6668
Source
Sci Total Environ. 2004 Sep 20;331(1-3):83-105
Publication Type
Article
Date
Sep-20-2004
Author
R. Dietz
F. Riget
K A Hobson
M P Heide-Jørgensen
P. Møller
M. Cleemann
J. de Boer
M. Glasius
Author Affiliation
National Environmental Research Institute, Department of Arctic Environment, P.O. Box 358, DK-4000 Roskilde, Denmark. rdi@dmu.dk
Source
Sci Total Environ. 2004 Sep 20;331(1-3):83-105
Date
Sep-20-2004
Language
English
Publication Type
Article
Keywords
Age Factors
Animals
Environmental monitoring
Environmental Pollutants - analysis - pharmacokinetics
Female
Greenland
Insecticides - analysis - pharmacokinetics
Male
Metals, Heavy - analysis - pharmacokinetics
Nitrogen Isotopes - analysis
Polychlorinated Biphenyls - analysis - pharmacokinetics
Research Support, Non-U.S. Gov't
Sex Factors
Tissue Distribution
Whales
Abstract
Samples of 150 narwhals obtained in different years from two West Greenland areas, Avanersuaq and Uummannaq, were compared for concentrations of and regional differences in heavy metals and organochlorines and stable-carbon and nitrogen isotopes. Cadmium, Hg, and Se concentrations increased in the first 3-4 years of the animal's life, after which no dependence on age was observed. Females had significantly higher concentrations of Cd in all tissues and of Hg and Se in liver than males. No consistent difference in metal levels between narwhals from Avanersuaq and Uummannaq was found. Year-to-year variation in metal levels at one location was larger than the geographical variation. Metal levels were within the range of previous published results for narwhals from Arctic Canada. Organochlorine (OC) concentrations in blubber of narwhals were dependent on age and sex. Females showed decreasing OC concentration in the first 8-10 years, while for males increases were detected in the first few years of life, after which the concentrations became stable. Few statistical differences in mean OC concentrations among individuals were observed. However, narwhals from Avanersuaq in 1993 had the lowest levels, indicating a temporal decrease of SigmaPCBs. SigmaPCBs, DDTs, HCHs and toxaphenes seem to be at similar levels in West Greenland and Arctic Canada, which can be explained by the close winter distributions of populations as well as large ranges in concentrations, time span, number of analyses and the size/age composition of the data. PCB and DDT concentrations in West Greenland narwhals were half those found in East Greenland and Svalbard. Stable-carbon isotope ratios in muscle of 150 narwhals showed a decreasing trend in the first year when they gradually reduced their dependency on mother's milk, after which they became relatively stable. delta15 N values were significantly higher in samples from Uummannaq in 1993 compared to samples from Avanersuaq in 1984 and 1985 indicating that the diet of the narwhals in Uummannaq was at a higher trophic level. However, only a few significant correlations were found between stable isotope ratios and metal and OC concentrations.
PubMed ID
15325143 View in PubMed
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