Lec 4

Question 1

what type of information can Acute studies provide for pesticides?

Answer 1

Safe handling
Doses for long-term studies
MSDS sheets
product labeling

how toxic is it

Question 2

What can short-term (sub-chronic) provide information on?

Answer 2

tissue and organs most susceptible
tolerated doses
suitable doses for long-term studies

how does it cause toxicity

Question 3

what can long-term (chronic) studies provide information on?

Answer 3

systemic toxicity and carcinogenicity
what is a safe level (NOAEL)

Question 4

what is the goal of environmental fate studies?

Answer 4

determine behavior in soil, water and air, and the potential uptake / bioaccumulation

Question 5

what 4 types of data are needed to establish the environmental fate of a pesticide? What does each type of data consist of?

Answer 5

1. physical and chemical properties - water solubility, vapor pressure, Kow
2. transformation process - the pathways of transformation or degradation (chemical, biological, sunlight, aerobic or anaerobic)
3. mobility - how does the pesticide move from applied areas
4. field study results - relevant studies to Canadian environment.