background image
Estimating exposure
For one individual, add up their food items:
weight
Body
days
No
ion
Concentrat
Weight
day
bw
kg
g
Exposure
item
last
item
first
i
i
i
=
=
.
)
(
)
/
/
(
Repeat for every individual in the survey
ion
Concentrat
Weight
Exposure
=
For a single food item: