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Question: 1 an adult 70 kg drinks 2 liter of water...

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1. An adult (70 kg) drinks 2 liter of water that contaminated with 12 ppb of Methyl Tertiary Butyl Ether (MTBE) every day, what is the absorbed average daily dose of MTBE for this adult? (assuming 100% absorption rate) 2. How about if a child drinks the same water, what is the absorbed average daily dose within the exposure period? (Assuming 10 kg body weight, drinks 1 liter of water per day, 100% absorption rate) 3. If this adult also exposed to air contaminated with 5 Hg/M3 of MTBE every day, what is the dose from inhalation? (Assume this adult breathes 20 M3/day of contaminated air, 100% absorption rate) 4. What is the total dose of MTBE for this adult from inhalation and ingestion? (Assuming toxic effects and toxico-kinetics from these two routes are the same)

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