Brief communication: Organochlorine pesticides in an archived firn core from Law Dome, East Antarctica
Organochlorine pesticides (OCPs) were, for the first time, quantified in archived firn cores from East Antarctica representative of 1945–1957 and 1958–1967 (current era, C.E.). The core sections were melted under high-purity nitrogen atmosphere, and the meltwater was analysed. Methods allowed quanti...
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ftcopernicus:oai:publications.copernicus.org:tc53765 2023-05-15T13:54:27+02:00 Brief communication: Organochlorine pesticides in an archived firn core from Law Dome, East Antarctica Bigot, Marie Curran, Mark A. J. Moy, Andrew D. Muir, Derek C. G. Hawker, Darryl W. Cropp, Roger Teixeira, Camilla F. Bengtson Nash, Susan M. 2018-09-27 application/pdf https://doi.org/10.5194/tc-10-2533-2016 https://tc.copernicus.org/articles/10/2533/2016/ eng eng doi:10.5194/tc-10-2533-2016 https://tc.copernicus.org/articles/10/2533/2016/ eISSN: 1994-0424 Text 2018 ftcopernicus https://doi.org/10.5194/tc-10-2533-2016 2020-07-20T16:23:56Z Organochlorine pesticides (OCPs) were, for the first time, quantified in archived firn cores from East Antarctica representative of 1945–1957 and 1958–1967 (current era, C.E.). The core sections were melted under high-purity nitrogen atmosphere, and the meltwater was analysed. Methods allowed quantification of hexachlorocyclohexanes, heptachlor, trans-chlordane, dieldrin and endrin. While the core presented evidence of nominal contamination by modern-use chemicals, indicating handling and/or storage contamination, legacy OCP concentrations and deposition rates reported are orders of magnitude lower than those from Arctic regions, lending support for their validity. The study further provides a description of equipment used and suggests methods to overcome logistical challenges associated with trace organic contaminant detection in polar regions. Text Antarc* Antarctica Arctic East Antarctica Copernicus Publications: E-Journals Arctic East Antarctica Law Dome ENVELOPE(112.833,112.833,-66.733,-66.733) The Cryosphere 10 5 2533 2539 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Organochlorine pesticides (OCPs) were, for the first time, quantified in archived firn cores from East Antarctica representative of 1945–1957 and 1958–1967 (current era, C.E.). The core sections were melted under high-purity nitrogen atmosphere, and the meltwater was analysed. Methods allowed quantification of hexachlorocyclohexanes, heptachlor, trans-chlordane, dieldrin and endrin. While the core presented evidence of nominal contamination by modern-use chemicals, indicating handling and/or storage contamination, legacy OCP concentrations and deposition rates reported are orders of magnitude lower than those from Arctic regions, lending support for their validity. The study further provides a description of equipment used and suggests methods to overcome logistical challenges associated with trace organic contaminant detection in polar regions. |
format |
Text |
author |
Bigot, Marie Curran, Mark A. J. Moy, Andrew D. Muir, Derek C. G. Hawker, Darryl W. Cropp, Roger Teixeira, Camilla F. Bengtson Nash, Susan M. |
spellingShingle |
Bigot, Marie Curran, Mark A. J. Moy, Andrew D. Muir, Derek C. G. Hawker, Darryl W. Cropp, Roger Teixeira, Camilla F. Bengtson Nash, Susan M. Brief communication: Organochlorine pesticides in an archived firn core from Law Dome, East Antarctica |
author_facet |
Bigot, Marie Curran, Mark A. J. Moy, Andrew D. Muir, Derek C. G. Hawker, Darryl W. Cropp, Roger Teixeira, Camilla F. Bengtson Nash, Susan M. |
author_sort |
Bigot, Marie |
title |
Brief communication: Organochlorine pesticides in an archived firn core from Law Dome, East Antarctica |
title_short |
Brief communication: Organochlorine pesticides in an archived firn core from Law Dome, East Antarctica |
title_full |
Brief communication: Organochlorine pesticides in an archived firn core from Law Dome, East Antarctica |
title_fullStr |
Brief communication: Organochlorine pesticides in an archived firn core from Law Dome, East Antarctica |
title_full_unstemmed |
Brief communication: Organochlorine pesticides in an archived firn core from Law Dome, East Antarctica |
title_sort |
brief communication: organochlorine pesticides in an archived firn core from law dome, east antarctica |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-10-2533-2016 https://tc.copernicus.org/articles/10/2533/2016/ |
long_lat |
ENVELOPE(112.833,112.833,-66.733,-66.733) |
geographic |
Arctic East Antarctica Law Dome |
geographic_facet |
Arctic East Antarctica Law Dome |
genre |
Antarc* Antarctica Arctic East Antarctica |
genre_facet |
Antarc* Antarctica Arctic East Antarctica |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-10-2533-2016 https://tc.copernicus.org/articles/10/2533/2016/ |
op_doi |
https://doi.org/10.5194/tc-10-2533-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
5 |
container_start_page |
2533 |
op_container_end_page |
2539 |
_version_ |
1766260332568772608 |