(for chemicals that are not radioactive)
The amount of a substance to which a person is exposed over some time period.
Often expressed as: mg/kg/day (amount/body weight/time) when people eat or drink contaminated water, food, or soil.
In general, the greater the dose, the greater the likelihood of an effect. An "exposure dose" is how much of a substance is encountered in the environment. An "absorbed dose" is the amount of a substance that actually got into the body through the eyes, skin, stomach, intestines, or lungs.