2010
Pathways of PFOA to the Arctic: variabilities and contributions of oceanic currents and atmospheric transport and chemistry sources
STEMMLER, Irene a Gerhard LAMMELZákladní údaje
Originální název
Pathways of PFOA to the Arctic: variabilities and contributions of oceanic currents and atmospheric transport and chemistry sources
Název česky
Pathways of PFOA to the Arctic: variabilities and contributions of oceanic currents and atmospheric transport and chemistry sources
Autoři
STEMMLER, Irene (276 Německo) a Gerhard LAMMEL (276 Německo, garant)
Vydání
Atmospheric Chemistry and Physics, Göttingen, Copernicus Publ. 2010, 1680-7316
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30304 Public and environmental health
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 5.309
Kód RIV
RIV/00216224:14310/10:00045328
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000283663000017
Klíčová slova česky
fluorinated compounds PFOA, Arctic long range transport
Klíčová slova anglicky
fluorinated compounds PFOA Arctic long range transport
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 10. 11. 2010 13:28, prof. Gerhard Lammel, PhD.
V originále
Perfluorooctanoic acid (PFOA) and other perfluorinated compounds are industrial chemicals in use for decades which resist degradation in the environment and seem to accumulate in polar regions. Transport of PFOA was modeled using a spatially resolved global multicompartment model including fully coupled three-dimensional ocean and atmosphere general circulation models, and two-dimensional top soil, vegetation surfaces, and sea ice compartments. In addition to primary emissions, the formation of PFOA in the atmosphere from degradation of 8:2 fluorotelomer alcohol was included as a PFOA source. Oceanic transport, delivered 14.8 plus/minus 5.0 (8 to 23) t per year to the Arctic, strongly influenced by changes in water transport, which determined its interannual variability. This pathway constituted the dominant source of PFOA to the Arctic. Formation of PFOA in the atmosphere led to episodic transport events (timescale of days) into the Arctic with small spatial extent. Deposition in the polar region was found to be dominated by wet deposition over land, and shows maxima in boreal winter. The total atmospheric deposition of PFOA in the Arctic in the 1990s was about 1 t per year , much higher than previously estimated, and is dominated by primary emissions rather than secondary formation.
Česky
Perfluorooctanoic acid (PFOA) and other perfluorinated compounds are industrial chemicals in use for decades which resist degradation in the environment and seem to accumulate in polar regions. Transport of PFOA was modeled using a spatially resolved global multicompartment model including fully coupled three-dimensional ocean and atmosphere general circulation models, and two-dimensional top soil, vegetation surfaces, and sea ice compartments. In addition to primary emissions, the formation of PFOA in the atmosphere from degradation of 8:2 fluorotelomer alcohol was included as a PFOA source. Oceanic transport, delivered 14.8 plus/minus 5.0 (8 to 23) t per year to the Arctic, strongly influenced by changes in water transport, which determined its interannual variability. This pathway constituted the dominant source of PFOA to the Arctic. Formation of PFOA in the atmosphere led to episodic transport events (timescale of days) into the Arctic with small spatial extent. Deposition in the polar region was found to be dominated by wet deposition over land, and shows maxima in boreal winter. The total atmospheric deposition of PFOA in the Arctic in the 1990s was about 1 t per year , much higher than previously estimated, and is dominated by primary emissions rather than secondary formation.
Návaznosti
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