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Lead Contamination of Subarctic Lakes and Its Response to Reduced Atmospheric Fallout: Can the Recovery Process Be Counteracted by the Ongoing Climate Change?

Klaminder, Jonatan; Hammarlund, Dan LU ; Kokfelt, Ulla LU ; Vonk, Jorien E and Bigler, Christian (2010) In Environmental Science & Technology 44. p.2335-2340
Abstract
Can a climate-triggered export of old contaminants from the soil alter the lead (Pb) contaminant burden of subarctic lakes? To address this question, we reconstructed the pollution history of three high latitude lakes situated in a region where a recent climatic shift has occurred. Dated sediment records were used as archives of past Pb inputs to the lakes, where the difference in the (206)Pb/(207)Pb ratio between atmospheric contaminants ((206)Pb/(207)Pb ratio <1.16) and geogenic Pb in the catchment soil ((206)Pb/(207)Pb ratio >1.22) were used to trace fluxes of Pb contaminants. Lead contaminants were found in sediments deposited since Roman times. A significant export of Pb from the soil contaminant pool is indicated in two of the... (More)
Can a climate-triggered export of old contaminants from the soil alter the lead (Pb) contaminant burden of subarctic lakes? To address this question, we reconstructed the pollution history of three high latitude lakes situated in a region where a recent climatic shift has occurred. Dated sediment records were used as archives of past Pb inputs to the lakes, where the difference in the (206)Pb/(207)Pb ratio between atmospheric contaminants ((206)Pb/(207)Pb ratio <1.16) and geogenic Pb in the catchment soil ((206)Pb/(207)Pb ratio >1.22) were used to trace fluxes of Pb contaminants. Lead contaminants were found in sediments deposited since Roman times. A significant export of Pb from the soil contaminant pool is indicated in two of the lakes surrounded by near-shore permafrost soils. Here, levels of Pb contaminants and (206)Pb/(207)Pb ratios of sediments deposited after the 1970s appear not to have been strongly affected by the >/=90% reduction in atmospheric deposition rates and increasing (206)Pb/(207)Pb ratios of atmospheric Pb since the 1990s. We concluded that soil processes stimulated by the ongoing climate change at high latitudes might work counteractive to efforts to reduce contaminant levels in subarctic lakes. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Environmental Science & Technology
volume
44
pages
2335 - 2340
publisher
The American Chemical Society
external identifiers
  • wos:000275993700019
  • pmid:20170181
  • scopus:77950411959
ISSN
1520-5851
DOI
10.1021/es903025z
project
Climate Initiative
MERGE
BECC
language
English
LU publication?
yes
id
1b775221-9ab6-4cc0-ade3-008ecadad807 (old id 1552481)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/20170181?dopt=Abstract
date added to LUP
2010-03-18 11:51:21
date last changed
2018-05-29 12:22:06
@article{1b775221-9ab6-4cc0-ade3-008ecadad807,
  abstract     = {Can a climate-triggered export of old contaminants from the soil alter the lead (Pb) contaminant burden of subarctic lakes? To address this question, we reconstructed the pollution history of three high latitude lakes situated in a region where a recent climatic shift has occurred. Dated sediment records were used as archives of past Pb inputs to the lakes, where the difference in the (206)Pb/(207)Pb ratio between atmospheric contaminants ((206)Pb/(207)Pb ratio &lt;1.16) and geogenic Pb in the catchment soil ((206)Pb/(207)Pb ratio &gt;1.22) were used to trace fluxes of Pb contaminants. Lead contaminants were found in sediments deposited since Roman times. A significant export of Pb from the soil contaminant pool is indicated in two of the lakes surrounded by near-shore permafrost soils. Here, levels of Pb contaminants and (206)Pb/(207)Pb ratios of sediments deposited after the 1970s appear not to have been strongly affected by the &gt;/=90% reduction in atmospheric deposition rates and increasing (206)Pb/(207)Pb ratios of atmospheric Pb since the 1990s. We concluded that soil processes stimulated by the ongoing climate change at high latitudes might work counteractive to efforts to reduce contaminant levels in subarctic lakes.},
  author       = {Klaminder, Jonatan and Hammarlund, Dan and Kokfelt, Ulla and Vonk, Jorien E and Bigler, Christian},
  issn         = {1520-5851},
  language     = {eng},
  pages        = {2335--2340},
  publisher    = {The American Chemical Society},
  series       = {Environmental Science & Technology},
  title        = {Lead Contamination of Subarctic Lakes and Its Response to Reduced Atmospheric Fallout: Can the Recovery Process Be Counteracted by the Ongoing Climate Change?},
  url          = {http://dx.doi.org/10.1021/es903025z},
  volume       = {44},
  year         = {2010},
}