Public Health Assessment Public Comment Release
The amount of a substance to which a person may be exposed, usually
on a daily basis. Dose is often explained as Aamount of substance(s) per
body weight per day@.
The relationship between the amount of exposure (dose) and the change
Dose / Response
in body function or health that results.
The amount of time (days, months, years) that a person is exposed to a
A substance (chemical) that gets into a system (person, animal, or the
environment) in amounts higher than the Background Level, or what
would be expected.
Usually refers to the air, water, and soil in which chemicals of interest
are found. Sometimes refers to the plants and animals that are eaten by
humans. Environmental Media is the second part of an Exposure
The federal agency that develops and enforces environmental laws to
protect the environment and the public=s health.
The study of the different factors that determine how often, in how
many people, and in which people will disease occur.
Coming into contact with a chemical substance. (For the three ways
people can come in contact with substances, see Route of Exposure.)
The process of finding the ways people come in contact with chemicals,
how often and how long they come in contact with chemicals, and the
amounts of chemicals with which they come in contact.
A description of the way that a chemical moves from its source (where
it began) to where and how people can come into contact with (or get
exposed to) the chemical.
ATSDR defines an exposure pathway as having 5 parts:
2. Environmental Media and Transport Mechanism,
3. Point of Exposure,
4. Route of Exposure, and