What parameter is used to evaluate the bioconcentration of a toxic contaminant in fish tissue?

What parameter is used to evaluate the bioconcentration of a toxic contaminant in fish tissue?

• A. bioconcentration factor (BCF)
• B. chronic daily intake (CDI)
• C. reference dose (RfD)
• D. acceptable daily intake (ADI)

Answer: (A)

Bioconcentration factor is the parameter that measures how a toxic contaminant builds up in fish tissue relative to its concentration in the surrounding water. At steady state, the concentration in the fish equals the environmental concentration multiplied by the BCF, so a higher BCF indicates a greater tendency for the chemical to accumulate in tissue. This concept specifically addresses how contaminants concentrate within aquatic organisms, unlike the other terms which describe human exposure or risk thresholds (daily intake, safe exposure levels) rather than tissue accumulation in fish.

Bioconcentration factor is the parameter that measures how a toxic contaminant builds up in fish tissue relative to its concentration in the surrounding water. At steady state, the concentration in the fish equals the environmental concentration multiplied by the BCF, so a higher BCF indicates a greater tendency for the chemical to accumulate in tissue. This concept specifically addresses how contaminants concentrate within aquatic organisms, unlike the other terms which describe human exposure or risk thresholds (daily intake, safe exposure levels) rather than tissue accumulation in fish.