Bbc Risk In Fish

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Cancer risks will be considered “essentially negligible” where the estimated ILCR is 1-in-100,000 (≤ 1 x 10-5) (Health Canada 2004). If the ILCR is greater than 1 x 10-5, the risk assessment should either be refined and/or risk management measures should be taken. In this study, ILCR is greater than 1 x 10-5. ILCR values in different tissues such as mussels and liver 3 species of coral island of Persian Gulf were in the range of 0.032677 - 0.044428. Thus documenting high potential carcinogenic risk for fish consumption at Kharg island. Furthermore, biotransformation of PAHs in fish and other aquatic organisms generally accompanied by side effects resulting from the formation of carcinogenic intermediates (Johnson-Restrepo et al., 2008, Lazartigues…show more content…
The bioconcentration factor (BCF) is the concentration of test substance in/on the fish or specified tissues thereof divided by the concentration of the chemical in the surrounding medium at steady state. In the context of setting exposure criteria it is generally understood that the terms “BCF” and “steady-state BCF” are synonymous. A steady-state condition occurs when the organism is exposed for a sufficient length of time that the ratio does not change substantially. Bioconcentration factors (BCFs) are used to relate pollutant residues in aquatic organisms to the pollutant concentration in ambient waters. Many chemical compounds, especially those with a hydrophobic component, partition easily into the lipids and lipid membranes of organisms and bioaccumulate. fish BCF and BMF (Biomagnification Factor) values are used to calculate concentrations in fish as part of the secondary poisoning assessment for wildlife, as well as for human dietary exposure. An invertebrate BCF may also be used to model a food chain based on consumption of sediment worms or shellfish. An assessment of secondary poisoning or human exposure via the environment will not always be necessary for every substance. In the first instance, a predicted BCF may be used for first tier risk assessment (Lombardo et al., 2010, Zhao et al., 2008, Dimitrov et al.,
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