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Bioaccumulation :

Bioaccumulation in Water and Sediment :

Bioaccumulation is the process by which the chemical concentration in an aquatic organism achieves a level that exceeds that in the water, as a result of chemical uptake through all possible routes of exposure. The relationship between bioaccumulation and bio-concentration is that, chemicals that have the potential to bioconcentrate also have the potential to bioaccumulate. Bioaccumulation is closely related to the Bioconcentration factor (BCF).

The estimated BCF of 4,4'-dinitrostilbene-2,2'-disulphonic acid in the key study was obtained to be 3.2. Supporting study also indicate the BCF to be 3.162. This low value of BCF of 4,4'-dinitrostilbene-2,2'-disulphonic acid indicates its non bioaccumulative nature as the BCF factor is less than the bio-concentration threshold of 1000.

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