toxicology and chemical hazards

what is a present day example

ohio train wreck, and how vinyl chloride (the toxin that spilled) might enter waterways and effect humans

what is toxicology

study of the harmful effects of chemicals on human and enviormental effects

what does “dose makes the poison” mean

anything can be poison if you have the right amount

dose

level of exposure x time

what is LD50?

The dose of a chemical that kills fifty percent \n of the test organisms

what is the relationship of the strength of LD50?

the lower the ld50 the more toxic the substance is

what is ED50?

Dose that works on 50% of test organisms