Occurrence and Air-sea exchange of phthalates in the Arctic

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Air and seawater samples were taken simultaneously to investigate the distribution and air-sea gas exchange of phthalates in the Arctic onboard the German Research Ship FS Polarstern. Samples were collected on expeditions ARK XX1&2 from the North Sea to the high Arctic (60° N-85° N) in the summer of 2004. The concentration of Σ6 phthalates (dimethyl phthalate (DMP), diethyl phthalate (DEP),di-i-butyl phthalate (DiBP), di-n-butyl phthalate (DnBP), butylbenzyl phthalate (BBP), and diethylhexyl phthalate (DEHP)) ranged from 30 to 5030 pg L-1 in the aqueous dissolved phase and from 1110 to 3090 pg m-3 in the atmospheric gas phase. A decreasing latitudinal trend was present in the seawater and to a lesser degree in the atmosphere from the Norwegian coast to the high Arctic. Overall, deposition dominated the air-sea gas exchange for DEHP, while volatilization from seawater took place in the near-coast environment. The estimated net gas deposition of DEHP was 5, 30, and 190 t year-1 for the Norwegian Sea, the Greenland Sea, and the Arctic, respectively. This suggests that atmospheric transport and deposition of phthalates is a significant process for their occurrence in the remote Atlantic and Arctic Ocean. © 2007 American Chemical Society.
Original languageEnglish
JournalEnvironmental Science & Technology
Volume41
Issue number13
Pages (from-to)4555-4560
Number of pages6
ISSN0013-936X
DOIs
Publication statusPublished - 01.07.2007

DOI

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