Measurement of loss rates of organic compounds in snow using in situ experiments and isotopically labelled compounds
Organic molecular marker compounds are widely used to identify emissions from anthropogenic and biogenic air pollution sources in atmospheric samples and in deposition. Specific organic compounds have been detected in polar regions, but their fate after deposition to snow is poorly characterized. Wi...
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Norwegian Polar Institute
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ftjpolarres:oai:journals.openacademia.net:article/2592 2024-06-23T07:50:42+00:00 Measurement of loss rates of organic compounds in snow using in situ experiments and isotopically labelled compounds von Schneidemesser, Erika Schauer, James J. Shafer, Martin M. Bergin, Michael H. 2012-07-26 application/pdf text/html application/epub+zip text/xml https://polarresearch.net/index.php/polar/article/view/2592 https://doi.org/10.3402/polar.v31i0.11597 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/2592/pdf_1 https://polarresearch.net/index.php/polar/article/view/2592/html https://polarresearch.net/index.php/polar/article/view/2592/epub https://polarresearch.net/index.php/polar/article/view/2592/xml https://polarresearch.net/index.php/polar/article/view/2592/5877 https://polarresearch.net/index.php/polar/article/view/2592/5878 https://polarresearch.net/index.php/polar/article/view/2592 doi:10.3402/polar.v31i0.11597 Polar Research; Vol 31 (2012) 1751-8369 Snow photochemistry air pollution Greenland Arctic info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2012 ftjpolarres https://doi.org/10.3402/polar.v31i0.11597 2024-06-13T23:33:00Z Organic molecular marker compounds are widely used to identify emissions from anthropogenic and biogenic air pollution sources in atmospheric samples and in deposition. Specific organic compounds have been detected in polar regions, but their fate after deposition to snow is poorly characterized. Within this context, a series of exposure experiments were carried out to observe the post-depositional processing of organic compounds under real-world conditions in snow on the surface of the Greenland Ice Sheet, at the Summit research station. Snow was prepared from water spiked with isotopically labelled organic compounds, representative of typical molecular marker compounds emitted from anthropogenic activities. Reaction rate constants and reaction order were determined based on a decrease in concentration to a stable, non-zero, threshold concentration. Fluoranthene-d10, docosane-d46, hexadecanoic acid-d31, docosanoic acid-d43 and azelaic acid-d14 were estimated to have first order loss rates within surface snow with reaction rate constants of 0.068, 0.040, 0.070, 0.067 and 0.047 h-1, respectively. No loss of heptadecane-d36 was observed. Overall, these results suggest that organic contaminants are archived in polar snow, although significant post-depositional losses of specific organic compounds occur. This has implications for the environmental fate of organic contaminants, as well as for ice-core studies that seek to use organic molecular markers to infer past atmospheric loadings, and source emissions.Keywords: Snow; photochemistry; air pollution; Greenland; ArcticTo access the supplementary material to this article: 'Supplementary Figures & Table' and 'Supplementary File', please see Supplementary files in the column to the right (under Article Tools).(Published: 26 July 2012)Citation: Polar Research 2012, 31, 11597, http://dx.doi.org/10.3402/polar.v31i0.11597 Article in Journal/Newspaper Arctic Greenland ice core Ice Sheet Polar Research Polar Research Arctic Greenland Polar Research 31 1 11597 |
institution |
Open Polar |
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Polar Research |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Snow photochemistry air pollution Greenland Arctic |
spellingShingle |
Snow photochemistry air pollution Greenland Arctic von Schneidemesser, Erika Schauer, James J. Shafer, Martin M. Bergin, Michael H. Measurement of loss rates of organic compounds in snow using in situ experiments and isotopically labelled compounds |
topic_facet |
Snow photochemistry air pollution Greenland Arctic |
description |
Organic molecular marker compounds are widely used to identify emissions from anthropogenic and biogenic air pollution sources in atmospheric samples and in deposition. Specific organic compounds have been detected in polar regions, but their fate after deposition to snow is poorly characterized. Within this context, a series of exposure experiments were carried out to observe the post-depositional processing of organic compounds under real-world conditions in snow on the surface of the Greenland Ice Sheet, at the Summit research station. Snow was prepared from water spiked with isotopically labelled organic compounds, representative of typical molecular marker compounds emitted from anthropogenic activities. Reaction rate constants and reaction order were determined based on a decrease in concentration to a stable, non-zero, threshold concentration. Fluoranthene-d10, docosane-d46, hexadecanoic acid-d31, docosanoic acid-d43 and azelaic acid-d14 were estimated to have first order loss rates within surface snow with reaction rate constants of 0.068, 0.040, 0.070, 0.067 and 0.047 h-1, respectively. No loss of heptadecane-d36 was observed. Overall, these results suggest that organic contaminants are archived in polar snow, although significant post-depositional losses of specific organic compounds occur. This has implications for the environmental fate of organic contaminants, as well as for ice-core studies that seek to use organic molecular markers to infer past atmospheric loadings, and source emissions.Keywords: Snow; photochemistry; air pollution; Greenland; ArcticTo access the supplementary material to this article: 'Supplementary Figures & Table' and 'Supplementary File', please see Supplementary files in the column to the right (under Article Tools).(Published: 26 July 2012)Citation: Polar Research 2012, 31, 11597, http://dx.doi.org/10.3402/polar.v31i0.11597 |
format |
Article in Journal/Newspaper |
author |
von Schneidemesser, Erika Schauer, James J. Shafer, Martin M. Bergin, Michael H. |
author_facet |
von Schneidemesser, Erika Schauer, James J. Shafer, Martin M. Bergin, Michael H. |
author_sort |
von Schneidemesser, Erika |
title |
Measurement of loss rates of organic compounds in snow using in situ experiments and isotopically labelled compounds |
title_short |
Measurement of loss rates of organic compounds in snow using in situ experiments and isotopically labelled compounds |
title_full |
Measurement of loss rates of organic compounds in snow using in situ experiments and isotopically labelled compounds |
title_fullStr |
Measurement of loss rates of organic compounds in snow using in situ experiments and isotopically labelled compounds |
title_full_unstemmed |
Measurement of loss rates of organic compounds in snow using in situ experiments and isotopically labelled compounds |
title_sort |
measurement of loss rates of organic compounds in snow using in situ experiments and isotopically labelled compounds |
publisher |
Norwegian Polar Institute |
publishDate |
2012 |
url |
https://polarresearch.net/index.php/polar/article/view/2592 https://doi.org/10.3402/polar.v31i0.11597 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland ice core Ice Sheet Polar Research |
genre_facet |
Arctic Greenland ice core Ice Sheet Polar Research |
op_source |
Polar Research; Vol 31 (2012) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/2592/pdf_1 https://polarresearch.net/index.php/polar/article/view/2592/html https://polarresearch.net/index.php/polar/article/view/2592/epub https://polarresearch.net/index.php/polar/article/view/2592/xml https://polarresearch.net/index.php/polar/article/view/2592/5877 https://polarresearch.net/index.php/polar/article/view/2592/5878 https://polarresearch.net/index.php/polar/article/view/2592 doi:10.3402/polar.v31i0.11597 |
op_doi |
https://doi.org/10.3402/polar.v31i0.11597 |
container_title |
Polar Research |
container_volume |
31 |
container_issue |
1 |
container_start_page |
11597 |
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1802641612514263040 |