Composition and origins of polycyclic aromatic hydrocarbons
ABSTRACT. Polycyclic aromatic hydrocarbon (PAH) concentrations in suspended particulate samples from the Mackenzie River delta and shelf sediments from the Beaufort Sea are higher than expected for a pristine area. Low concentrations of combustion PAHs indicate that anthropogenic inputs are low. Alk...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.491.6313 2023-05-15T14:19:40+02:00 Composition and origins of polycyclic aromatic hydrocarbons Mark B. Yunker Robie W. Macdonald The Pennsylvania State University CiteSeerX Archives 1995 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.491.6313 http://pubs.aina.ucalgary.ca/arctic/Arctic48-2-118.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.491.6313 http://pubs.aina.ucalgary.ca/arctic/Arctic48-2-118.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.aina.ucalgary.ca/arctic/Arctic48-2-118.pdf text 1995 ftciteseerx 2016-08-14T00:03:24Z ABSTRACT. Polycyclic aromatic hydrocarbon (PAH) concentrations in suspended particulate samples from the Mackenzie River delta and shelf sediments from the Beaufort Sea are higher than expected for a pristine area. Low concentrations of combustion PAHs indicate that anthropogenic inputs are low. Alkyl PAH distributions indicate that a significant component of the lower molecular weight parent (unsubstituted) PAH fraction is petrogenic. The majority of the high molecular weight PAHs, together with the petrogenic PAHs, have a principal source in the Mackenzie River. Despite the high PAH content, we consider the area still to be pristine. Although PAH concentrations are below the concentrations believed to induce toxic effects on biota, the high natural concentrations may make this region of the Arctic sensitive to additional PAHs from human activities. Key words: polycyclic aromatic hydrocarbon (PAH), Arctic, baseline, sediment, effects threshold, principal components analysis RÉSUMÉ. Les concentrations d’hydrocarbures aromatiques polycycliques (HAP) dans des échantillons de particules en suspension venant du delta du Mackenzie et de sédiments du plateau continental de la mer de Beaufort sont plus élevées qu’on pourrait s’y attendre pour une zone vierge. Les faibles concentrations de HAP de combustion suggèrent que l’apport anthropique est faible. La distribution des HAP alkyles indique qu’une composante importante de la fraction de HAP-mère (non substitué) à bas poids moléculaire est pétrogénétique. La majorité des HAP à haut poids moléculaire, ainsi que les HAP pétrogénétiques, ont leur source principale dans le fleuve Mackenzie. Malgré la teneur élevée en HAP, la région est toujours considérée comme vierge. Bien que les concentrations d’HAP soient inférieures aux valeurs qui pourraient avoir des effets toxiques sur le biote, les fortes Text Arctic Arctic Beaufort Sea Mackenzie river Mer de Beaufort Unknown Arctic Fleuve Mackenzie ENVELOPE(-133.906,-133.906,69.350,69.350) Mackenzie River Mer de Beaufort ENVELOPE(-138.005,-138.005,69.500,69.500) Vierge ENVELOPE(139.971,139.971,-66.671,-66.671) |
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ftciteseerx |
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English |
description |
ABSTRACT. Polycyclic aromatic hydrocarbon (PAH) concentrations in suspended particulate samples from the Mackenzie River delta and shelf sediments from the Beaufort Sea are higher than expected for a pristine area. Low concentrations of combustion PAHs indicate that anthropogenic inputs are low. Alkyl PAH distributions indicate that a significant component of the lower molecular weight parent (unsubstituted) PAH fraction is petrogenic. The majority of the high molecular weight PAHs, together with the petrogenic PAHs, have a principal source in the Mackenzie River. Despite the high PAH content, we consider the area still to be pristine. Although PAH concentrations are below the concentrations believed to induce toxic effects on biota, the high natural concentrations may make this region of the Arctic sensitive to additional PAHs from human activities. Key words: polycyclic aromatic hydrocarbon (PAH), Arctic, baseline, sediment, effects threshold, principal components analysis RÉSUMÉ. Les concentrations d’hydrocarbures aromatiques polycycliques (HAP) dans des échantillons de particules en suspension venant du delta du Mackenzie et de sédiments du plateau continental de la mer de Beaufort sont plus élevées qu’on pourrait s’y attendre pour une zone vierge. Les faibles concentrations de HAP de combustion suggèrent que l’apport anthropique est faible. La distribution des HAP alkyles indique qu’une composante importante de la fraction de HAP-mère (non substitué) à bas poids moléculaire est pétrogénétique. La majorité des HAP à haut poids moléculaire, ainsi que les HAP pétrogénétiques, ont leur source principale dans le fleuve Mackenzie. Malgré la teneur élevée en HAP, la région est toujours considérée comme vierge. Bien que les concentrations d’HAP soient inférieures aux valeurs qui pourraient avoir des effets toxiques sur le biote, les fortes |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Mark B. Yunker Robie W. Macdonald |
spellingShingle |
Mark B. Yunker Robie W. Macdonald Composition and origins of polycyclic aromatic hydrocarbons |
author_facet |
Mark B. Yunker Robie W. Macdonald |
author_sort |
Mark B. Yunker |
title |
Composition and origins of polycyclic aromatic hydrocarbons |
title_short |
Composition and origins of polycyclic aromatic hydrocarbons |
title_full |
Composition and origins of polycyclic aromatic hydrocarbons |
title_fullStr |
Composition and origins of polycyclic aromatic hydrocarbons |
title_full_unstemmed |
Composition and origins of polycyclic aromatic hydrocarbons |
title_sort |
composition and origins of polycyclic aromatic hydrocarbons |
publishDate |
1995 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.491.6313 http://pubs.aina.ucalgary.ca/arctic/Arctic48-2-118.pdf |
long_lat |
ENVELOPE(-133.906,-133.906,69.350,69.350) ENVELOPE(-138.005,-138.005,69.500,69.500) ENVELOPE(139.971,139.971,-66.671,-66.671) |
geographic |
Arctic Fleuve Mackenzie Mackenzie River Mer de Beaufort Vierge |
geographic_facet |
Arctic Fleuve Mackenzie Mackenzie River Mer de Beaufort Vierge |
genre |
Arctic Arctic Beaufort Sea Mackenzie river Mer de Beaufort |
genre_facet |
Arctic Arctic Beaufort Sea Mackenzie river Mer de Beaufort |
op_source |
http://pubs.aina.ucalgary.ca/arctic/Arctic48-2-118.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.491.6313 http://pubs.aina.ucalgary.ca/arctic/Arctic48-2-118.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766291442491195392 |