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Contamination of Antarctic snow by polycyclic aromatic hydrocarbons dominated by combustion sources in the polar region
Research Centre for Toxic Compounds in the Environment, Masaryk University, Brno, Czech Republic. (MTM)ORCID iD: 0000-0003-1733-8334
Research Centre for Toxic Compounds in the Environment, Brno, Czech Republic; Max Planck Institute for Chemistry, Mainz, Germany.
Research Centre for Toxic Compounds in the Environment, Masaryk University, Brno, Czech Republic.
Research Centre for Toxic Compounds in the Environment, Masaryk University, Brno, Czech Republic.ORCID iD: 0000-0002-8818-5307
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2010 (English)In: Environmental Chemistry, ISSN 1448-2517, E-ISSN 1449-8979, Vol. 7, no 6, p. 504-513Article in journal (Refereed) Published
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Abstract [en]

Firn samples attributed to the period between 2002 and 2005 were collected from a snow pit on the Ekstrom Shelf Ice in the Weddell Sea (70 degrees 43.8'S, 8 degrees 25.1'W). Low-volume meltwater samples (5 mL) were extracted by solid-phase microextraction (SPME) and analysed for polycyclic aromatic hydrocarbons (PAHs) by gas chromatography-mass spectrometry. The recovery of the analytical method for the 4-6 ring PAHs was low. PAH concentrations in snow were found within the range of 26-197 ng L(-1). The most prevailing substances were determined to be naphthalene, 1- and 2-methylnaphthalene, acenaphthylene, acenaphthene and phenanthrene, with naphthalene accounting for an overall mean of 82% of total PAH. Potential emission sources of PAHs in snow were studied using back-trajectory statistics and available emission data of combustion sources in and around Antarctica. The distance to the sources (ships and research stations) in this region was found to control the snow PAH concentrations. There was no indication for intercontinental transport or marine sources.

Place, publisher, year, edition, pages
CSIRO Publishing, 2010. Vol. 7, no 6, p. 504-513
Keywords [en]
air pollution; Antarctica; GC-MS; long-range transport; SPME
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
URN: urn:nbn:se:oru:diva-49786DOI: 10.1071/EN10066ISI: 000285466700003Scopus ID: 2-s2.0-78650599697OAI: oai:DiVA.org:oru-49786DiVA, id: diva2:918888
Note

Funding Agencies:

European Union CZ.1.05/2.1.00/01.0001

Ministry of Environment of the Czech Republic SP/1B1/30/07

European Commission 226534

Available from: 2016-04-12 Created: 2016-04-12 Last updated: 2018-05-02Bibliographically approved

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Kukucka, PetrKlanova, Jana

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