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Mercury (Hg) Transport in a High Arctic River in Northeast Greenland

Riget, Frank; Tamstorf, Mikkel P.; Larsen, Martin M.; Sondergaard, Jens; Asmund, Gert; Falk, Julie Maria LU and Sigsgaard, Charlotte (2011) In Water, Air and Soil Pollution 222(1-4). p.233-242
Abstract
In a warming climate, mercury (Hg) pathways in the Arctic can be expected to be affected. The Hg transport from the high arctic Zackenberg River Basin was assessed in 2009 in order to describe and estimate the mercury transported from land to the marine environment. A total of 95 water samples were acquired and filtered (0.4 mu m pore size), and Hg concentrations were determined in both the filtered water and in the sediment. A range of other elements were also measured in the water samples. Hg concentrations in the filtered water were in general highest in the beginning of the season when the water came mainly from melted snow. THg concentrations in the sediment were in general relatively constant or slightly decreasing until mid-August,... (More)
In a warming climate, mercury (Hg) pathways in the Arctic can be expected to be affected. The Hg transport from the high arctic Zackenberg River Basin was assessed in 2009 in order to describe and estimate the mercury transported from land to the marine environment. A total of 95 water samples were acquired and filtered (0.4 mu m pore size), and Hg concentrations were determined in both the filtered water and in the sediment. A range of other elements were also measured in the water samples. Hg concentrations in the filtered water were in general highest in the beginning of the season when the water came mainly from melted snow. THg concentrations in the sediment were in general relatively constant or slightly decreasing until mid-August, where after the concentrations increased. A principal component analysis separated the samples into spring, summer and autumn samples indicating seasonal characteristics of the patterns of element concentrations. The total amount of Hg in the sediment transported was estimated to 2.6 kg. Approximately 60% of the sediment-transported Hg occurred during a 24-h flood in the beginning of August caused by a glacial lake outburst flood. The total amount of transported dissolved Hg was estimated to 46 g, and 13% of this transport occurred during the 24-h flood. If it is assumed that the Hg transport by Zackenberg River is representative for the general glacial rivers in East Greenland, the total Hg transport into the North Atlantic from Greenland alone is approximately 4.6 tons year(-1) with an estimated annual freshwater discharge of similar to 440 km(3). (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Mercury, River transport, Marine, Arctic, Greenland
in
Water, Air and Soil Pollution
volume
222
issue
1-4
pages
233 - 242
publisher
Springer
external identifiers
  • wos:000296632900016
  • scopus:80755153770
ISSN
1573-2932
DOI
10.1007/s11270-011-0819-4
project
BECC
language
English
LU publication?
yes
id
55dff59d-37cd-480e-ac13-129247d570d5 (old id 2252980)
date added to LUP
2011-12-22 08:54:08
date last changed
2017-01-01 03:57:18
@article{55dff59d-37cd-480e-ac13-129247d570d5,
  abstract     = {In a warming climate, mercury (Hg) pathways in the Arctic can be expected to be affected. The Hg transport from the high arctic Zackenberg River Basin was assessed in 2009 in order to describe and estimate the mercury transported from land to the marine environment. A total of 95 water samples were acquired and filtered (0.4 mu m pore size), and Hg concentrations were determined in both the filtered water and in the sediment. A range of other elements were also measured in the water samples. Hg concentrations in the filtered water were in general highest in the beginning of the season when the water came mainly from melted snow. THg concentrations in the sediment were in general relatively constant or slightly decreasing until mid-August, where after the concentrations increased. A principal component analysis separated the samples into spring, summer and autumn samples indicating seasonal characteristics of the patterns of element concentrations. The total amount of Hg in the sediment transported was estimated to 2.6 kg. Approximately 60% of the sediment-transported Hg occurred during a 24-h flood in the beginning of August caused by a glacial lake outburst flood. The total amount of transported dissolved Hg was estimated to 46 g, and 13% of this transport occurred during the 24-h flood. If it is assumed that the Hg transport by Zackenberg River is representative for the general glacial rivers in East Greenland, the total Hg transport into the North Atlantic from Greenland alone is approximately 4.6 tons year(-1) with an estimated annual freshwater discharge of similar to 440 km(3).},
  author       = {Riget, Frank and Tamstorf, Mikkel P. and Larsen, Martin M. and Sondergaard, Jens and Asmund, Gert and Falk, Julie Maria and Sigsgaard, Charlotte},
  issn         = {1573-2932},
  keyword      = {Mercury,River transport,Marine,Arctic,Greenland},
  language     = {eng},
  number       = {1-4},
  pages        = {233--242},
  publisher    = {Springer},
  series       = {Water, Air and Soil Pollution},
  title        = {Mercury (Hg) Transport in a High Arctic River in Northeast Greenland},
  url          = {http://dx.doi.org/10.1007/s11270-011-0819-4},
  volume       = {222},
  year         = {2011},
}