Pathways of PFOA to the Arctic: variabilities and contributions of oceanic currents and atmospheric transport and chemistry sources

STEMMLER, Irene a Gerhard LAMMEL. Pathways of PFOA to the Arctic: variabilities and contributions of oceanic currents and atmospheric transport and chemistry sources. Atmospheric Chemistry and Physics. Göttingen: Copernicus Publ., 2010, roč. 10, č. 20, s. 9965-9980. ISSN 1680-7316.

Základní 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

• Originální 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

Anotace

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.

Anotace 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

• MSM0021622412, záměr: Název: Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální, regionální a lokální úrovni (INCHEMBIOL) (Akronym: INCHEMBIOL)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální , regionální a lokální úrovni