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Threshold / NOEL Levels of Chemical Toxins

The threshold/NOEL level found for a particular chemical from animal studies is 0.006 mg/kg body weight per day. The only source for the chemical is freshwater fish, where it occurs at an average level of 0.2 ppm. What is the maximum average daily consumption(g) of such fish that would keep exposure level below the ADI or RfD for the compound?

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