Bioconcentration factor

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Bioconcentration factor is the concentration of a particular chemical in a tissue per concentration of chemical in water (reported as L/kg). This physical property characterizes the accumulation of pollutants through chemical partitioning from the aqueous phase into an organic phase, such as the gill of a fish. 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.

High potential BCF>1000; Moderate Potential 1000>BCF>250; Low potential 250>BCF.

BCF = [ConcentrationofXinOrganism] / [ConcentrationofXinEnvironment]

How much in the organism over the how much in the environment. Also related to the Haunsch Partition Coefficent via logBCF = 0.79 x logKOW - 0.4

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