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- W1993272015 abstract "Distribution of PAHs in a river ecosystem was studied by sampling of four abiotic compartments (surface water, suspended matter, pore water and sediments) under two different hydro‐logical conditions. PAHs were detected at significant concentrations in both the solid and aqueous phase of the river ecosystem. Water concentrations were relatively low despite greater contamination of sediments. Lower MW PAHs were prevailing in the dissolved phase, higher MW PAHs in particulate materials. Concentrations of PAHs in surface waters were greater in summer than in fall. PAHs composition in the sediments was found to be relatively uniform across sites reflecting combustion generated PAH profile. Correlation and multivariate statistical analysis have shown differences between PAH patterns in solid and water samples. In aquatic samples and suspended matter, principal component analysis distinguished two separated groups of PAHs with different distribution depending on their molecular weight. In‐situ partition coefficients between the solid and aqueous phase did not differ very much between seasons. The role of organic carbon for PAHs partitioning to sediments in situ was examined. PAHs concentrations correlated to OC content only in summer. In‐situ Kocs were up to two orders of magnitude greater than tabulated Kocs based on the equilibrium partitioning model. The main reasons are the lower availibility of PAHs bound to particles from combustion sources to partition into the aqueous phase and dynamic conditions in the river ecosystem which do not enable the full equilibrium to appear." @default.
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- W1993272015 date "2001-03-01" @default.
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- W1993272015 title "Distribution of polycyclic aromatic hydrocarbons among different compartments of a river ecosystem" @default.
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- W1993272015 doi "https://doi.org/10.1080/02772240109359001" @default.
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