The Air Pollutants Exposure Model

This page provides a description and a link to a "The Air Pollutants Exposure Model" modeling tool that can be used for modeling exposure levels or information needed in exposure assessment.

Short description

The Air Pollutants Exposure Model (APEX) is intended to be applied at the local, urban, or consolidated metropolitan area scale and currently only addresses inhalation exposures. The model simulates the movement of individuals through time and space and their exposure to the given pollutant in various microenvironments (e.g., outdoors, indoors residence, in-vehicle). The user may choose the number and types of microenvironments to be included, select the time period of interest, use either monitored ambient air quality data or values provided from dispersion or other modeling runs, and use either a mass balance approach or an empirical ratio-based (factor) approach to estimate indoor and/or in-vehicle concentrations. Results of the APEX simulations are provided as hourly and summary exposure and/or dose estimates, depending on the application, for each individual included in the simulation as well as summary statistics for the population modeled.

Link

http://www.epa.gov/ttn/fera/human_apex.html

Keywords

intake, inhalation, air, modeling, human health, time use, exposure, dose