Innovative Tools Help EPA Scientists Determine Total Chemical Exposures

Read the full story in Science Matters.

Everyday activities – actions as simple as biting into an apple, or walking across a carpeted floor – may expose people to a host of chemicals through a variety of pathways. The air we breathe, the food and water we consume, and the surfaces we touch all are the homes of natural and synthetic chemicals, which enter our bodies through our skin, our digestive systems, and our lungs.

This makes determining how (and how much of) certain chemicals enter our bodies challenging. In most cases, there is not one single source for any given chemical that may be found in our bodies. Using sophisticated computer models and methods, EPA scientists have developed an innovative set of tools to estimate total exposures and risks from chemicals encountered in our daily lives.

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