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- W2078554357 abstract "In this study, we use empirical relationships to model accumulation of polychlorinated biphenyls (PCBs) in submerged rooted macrophytes sampled in the upper St. Lawrence River (Canada - United States). The correlations between PCB congener concentrations in sediments, in macrophyte shoots, and in their roots were all significant (P < 0.001). However, the PCB congener concentrations in macrophyte shoots were better predicted by concentrations in sediments (top 5 cm) than by those in the roots of plants (R 2 = 0.839 and 0.704, respectively). Our results suggest that models based on the phase partitioning concept are applicable to submerged macrophytes. The lipids in shoots and the organic fraction in sediments are likely the phases involved in PCB partitioning between these two compartments. Between shoots and roots, the lipid phase also appears to be involved in the congener partitioning. However, between roots and sediments (5- to 10-cm depth interval), the correlation was weaker using organic weight standardisation of congener concentrations in sediments than using dry weight standardisation (R 2 = 0.852 and 0.778, respectively)." @default.
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- W2078554357 date "1999-10-01" @default.
- W2078554357 modified "2023-09-27" @default.
- W2078554357 title "Empirical relationships between polychlorinated biphenyls in sediments and submerged rooted macrophytes" @default.
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- W2078554357 doi "https://doi.org/10.1139/f99-111" @default.
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