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- W3208458424 abstract "It is still not clear what role the oceanic transport plays in the fate of persistent organic pollutants (POPs) in the Arctic Ocean. The strong-stratified Arctic Ocean undergoes complex inputs and outputs of polycyclic aromatic hydrocarbons (PAHs) from the neighboring oceans and continents. To better understand PAHs’ transport processes and their contribution in high-latitude oceans, surface seawater, and water column samples were collected from the North Atlantic Ocean and the Arctic Ocean in 2012. The spatial distribution of dissolved PAHs (∑9PAH) in surface seawater showed an “Arctic Shelf > Atlantic Ocean > Arctic Basin” pattern, with a range of 0.3-10.2 ng L-1. Positive matrix factorization (PMF) modeling results suggested that vehicle emissions and biomass combustion were the major PAHs sources in the surface seawater. According to principal component analysis (PCA), PAHs in different water masses showed unique profiles indicating their different origins. The net transport mass flux of PAH individuals ranged from -4.4±1.7 to 53±39 tons/year to the Arctic Ocean, with a sum of 63±53 tons/year. The direct contribution of ocean currents was limited for PAHs transporting to the Arctic Ocean, but their role in modulating atmospheric POPs should be further considered." @default.
- W3208458424 created "2021-11-08" @default.
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- W3208458424 date "2021-01-01" @default.
- W3208458424 modified "2023-10-18" @default.
- W3208458424 title "Polycyclic Aromatic Hydrocarbons in the North Atlantic Ocean and the Arctic Ocean: Spatial Distribution and Water Mass Transport" @default.
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- W3208458424 doi "https://doi.org/10.2139/ssrn.3940194" @default.
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