Modeling Naphthalene Exposure from Jet Fuel
Author Information
Author(s): Kim David, Andersen Melvin E., Chao Yi-Chun E., Egeghy Peter P., Rappaport Stephen M., Nylander-French Leena A.
Primary Institution: The University of North Carolina at Chapel Hill
Hypothesis
The study aims to construct a physiologically based toxicokinetic (PBTK) model to describe the contributions of dermal and inhalation exposures to naphthalene concentrations in exhaled breath.
Conclusion
The PBTK model showed that dermal exposure contributes a median of 4% to the end-exhaled breath concentration of naphthalene among U.S. Air Force personnel.
Supporting Evidence
- The model predicted the end-exhaled breath concentration of naphthalene for 53 U.S. Air Force personnel.
- The median air concentration of naphthalene was 2.4 μg/m3 during exposure.
- The study found considerable interindividual variability in naphthalene absorption.
- The PBTK model required fewer parameters than previous models for naphthalene.
- The median contribution of dermal exposure to breath concentration was 4%.
Takeaway
This study created a model to understand how naphthalene from jet fuel enters the body through skin and breathing, helping to see how much comes from each way.
Methodology
The study used a PBTK model with five compartments to analyze dermal and inhalation exposures to naphthalene, optimizing parameters with human exposure data.
Limitations
The study had a small sample size and did not capture short-term exposure variations.
Participant Demographics
10 volunteers (5 females and 5 males) with varying heights and weights.
Digital Object Identifier (DOI)
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