What is the ATSDR level for mercury exposure?
The minimal risk level, or MRL, is 0.3 micrograms per kilograms of body weight per day (ug/kg/d) for ingestion of methylmercury. Mercury occurs in the environment in several forms: elemental, inorganic and organic mercury. Methylmercury is the most common form of organic mercury. People can be exposed to methylmercury by eating fish or shellfish that come from mercury-contaminated waters. MRLs are health guidance values established by ATSDR and are intended for use by health assessors as screening tools when determining whether further evaluation of potential human exposure at hazardous waste sites is warranted. They are not intended for use in determining clean-up levels or for other regulatory purposes. Q17: Why is this level different from EPA&Mac226;s? A: Both agencies recognize Mercury as a neurotoxicant, a toxin which affects the nervous system of humans. Further, both agencies recognize that fetuses and women of reproductive age are among the groups at high risk from Mercury exp
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