An Introduction to the Exposure Commitment Concept with Reference to Environmental Mercury - MARC Report Number 12
When a toxic substance is released to the environment, it may not immediately reach and affect a population of sensitive receptors. This is particularly true if the substance must pass through a sequence of environmental compartments each of which causes a delay in the transfer process. Nevertheless, the act of introducing that substance into the environment constitutes on behalf of the receptors a commitment to a future exposure. The totality of that future exposure is called the exposure commitment. In this report, relevant concepts and the use of this approach to environmental assessment are discussed.
Reports and Books