Dietary Exposure Potential Model
Description:
Existing food consumption and
contaminant residue databases, typically products of nutrition and regulatory
monitoring, contain useful information to characterize dietary intake of
environmental chemicals. A PC-based model with resident database system,
termed the Dietary Exposure Potential Model (DEPM), correlates extant food
information in a format for estimating daily dietary exposure and identifying
sources. Though not intended for risk
analysis, DEPM is a suitable tool for designing and interpreting exposure
measurements, identifying data gaps and establishing priorities for dietary
exposure research. DEPM has been used to design exposure measurement studies
by estimating the importance of diet relative to other exposure
pathways. The potential for high
exposure of certain populations, caused by above normal consumption of a
particular food, a highly contaminated food, or unique dietary characteristics,
is useful information when designing exposure studies or interpreting
measurements of contaminants in composited diet samples.
Record Details:
Record Type:MODEL
Product Published Date:10/29/2003
Record Last Revised:11/16/2009
Record ID:
74901
Keywords:
Residue, consumption, dietary exposure, pesticides, metals,
Model Keywords:
Chemical (e.g., organic, inorganic, toxics), Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), Area Source (e.g., spray, fertilizer, lagoon, holding area), Human Health Indicators, Body Burden - Dose (e.g., phamacokinetics, retention, transformation), Pathway (e.g., inhalation, digestion, dermal, injection), Exposure Characterization,
Model Detail:
Model Evaluation
:Many checks and balances during development of model
User comments
Uses publicly available databases
Moderate model testing (evaluation)
has been performed both internally and outside USEPA.
Solid boxes indicate the required input selections and output functions for a typical exposure estimate. Dashed boxes indicate several optional functions available for custom analyses including:
-
An integrated COMBINE tool, which allows
the user to combine residue data from multiple residue databases for
specified chemicals and foods;
-
A FIAS module to import daily food diaries
created by the user from Food Intake Analysis System (FIAS; University of
Texas, Human Nutrition Center) software designed for automatic coding of food
diary items into USDA's Continuing Survey of Food Intakes by Individuals
(CSFII) coding structure.
-
A USER-DEFINED DATA tool,
which allows the user to incorporate foods or chemicals, and their residues
and consumption data, that are not included in the resident databases;
-
A TAP WATER option, which
allows the user to estimate the contribution of tap water to daily dietary
exposure.
Model Outputs
:Daily intake of residues are estimated for over 300 pesticides and environmental contaminants. In addition, contributions to total exposure from exposure core food groups and individual exposure core foods can also be estimated. The user may rank the exposure estimates by food code, food consumption, food residue or food?s contribution to total daily exposure.
Model Computer Requirements:
Model Operating Systems Needs
:Windows 95, 98, or later
Model Hardware Needs
:Minimum PC: Pentium III; requires approx. 95 megabytes of hard disk space
other_req
:Visual FoxPro application program.