“…It is important to relate these differences to the levels of contamination and the ratio of concentrations measured in EBR, PR and ZE sediments was 1:3.2:4.8 for 1-OH-Pyr, 1:4.2:7.6 for 1-OH-Phen and 1:2.2:2.5 for 3-OH-B[a]P, respectively, thereby explaining the differences in the uptake and metabolism of these three compounds. The most important route of uptake for water-borne PAHs is via the gills and this route has also been demonstrated to apply in fish exposed to sediment suspensions De Voogt et al, 1991;Kennedy and Law, 1990;Lee et al, 1972;Yang et al, 2000). Compared to similar experiments conducted by our own group, concentrations of 1-OH-Pyr and 1-OH-Phen in EBR-treated fish from the present study were considerably lower (by approximately 2-to 6-fold), most probably due to the fact that, in contrast to the previous experiments, the fish were fed .…”