Chemicals & Human Health

Toxicology Problem Set

Problem 6: Measuring dose

Which will NOT help you determine the dose of a hazardous gas received by a person?

A. their respiration rate
B. their length of exposure to the gas
C. the source of the gas
Knowing the source of a hazard will help the scientists to reduce exposure in the future, but will not help to determine how much a person has in their body. When scientists cannot directly measure the amount of a toxic chemical in the blood, they estimate exposure by looking at other factors. They determine things such as how fast a person was breathing, how long they were exposed, how often they were exposed, how easily the gas is absorbed and the concentration of the hazard.
D. their frequency of exposure to the gas
E. the concentration of the gas
F. the gas's chemical and biological properties

Toxicology Problem Set Chemicals & Human Health

The Southwest Environmental Health Sciences Center
The Biology Project
The University of Arizona
Tuesday, September 16, 1997
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