Remarkable advances in analytical chemistry now make
it possible to measure minute levels of both natural
and synthetic compounds in human tissue and body
fluids. This “biomonitoring” allows researchers to
determine more precisely than ever the degree to which
individuals have been exposed to specific chemicals in
the environment, and how exposures change over time.
Consequently, federal and state officials increasingly
regard biomonitoring as a potential new underpinning of
environmental and public health regulations.