HW 8 - 4 ). 6. Discussion Question 6-2 in Davis and Masten....

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53:050 Natural Environmental Systems Homework Assignment No. 8 – Spring 2011 Due Friday March 25 by 8:30 am 1. Problem 6-2 in Davis and Masten. 2. Problem 6-5 in Davis and Masten. 3. Problem 6-7 in Davis and Masten. 4. Problem 6-12 in Davis and Masten. 5. Characterize the total risk for chronic exposure by the water pathway (oral) for 1.3 µg/kg-d of benzene (C 6 H 6 ), 0.14 µg/kg-d of arsenic, and 0.24 µg/kg-d of carbon tetrachloride (tetrachloromethane – CCl
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Unformatted text preview: 4 ). 6. Discussion Question 6-2 in Davis and Masten. 7. A worker is exposed to two chemicals in at his workplace. The air contains 1.4 μg/m 3 of chloroform (CHCl 3 ) and 1.2 μg/m 3 of benzene (C 6 H 6 ). (a) Estimate the lifetime cancer risk for this worker. (b) Do you judge this risk to be acceptable? Why or why not? You will have to make assumptions to work this problem. Make and justify them....
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This note was uploaded on 06/03/2011 for the course 53 50 taught by Professor Parkin during the Spring '11 term at University of Iowa.

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