Problem 1
What are the three main categories of pesticides? What types of organisms are killed by each category?
Problem 2
What is meant by the term fumigant?
Problem 3
Name three important properties shared by organochlorine pesticides.
Problem 4
Draw the structure of DDT, and state what the initials stand for.
Problem 5
What units are usually used to state the concentrations of trace contaminants in water?
Problem 6
What were the main uses of DDT? Explain why it is no longer used in many developed countries and why some developing countries wish to continue using it.
Problem 9
Explain what is meant by the terms bioconcentration and bioconcentration factor (BCF).
Problem 10
Explain what is meant by the term biomagnification, and how it differs from bioconcentration.
Problem 11
Write the defining equation for the partition coefficient \(K_{\text {ow' }}\). How is it related to a compound's BCF? What is octanol supposed to be a surrogate for in this experiment?
Problem 13
In general terms, explain what toxaphene is and why it is no longer in use.
