Which is NOT part of the eight elements of the DOD IH Exposure Assessment Model?

• A. Gas Chromatography
• B. Define Scope of Support and Resources
• C. Basic Characterization
• D. Establish similar Exposure Groups (SEGs)

Answer: (A)

The main concept here is recognizing what belongs in the planning and characterization steps of the DoD IH Exposure Assessment Model versus what is a laboratory analytical technique. Gas chromatography is a lab method used to analyze chemical concentrations in samples. It’s something you do after collecting and preparing samples to quantify exposures, not a step in the model’s planning and characterization framework.

The eight elements of the exposure assessment model are things like defining the scope of support and resources, and performing basic characterization of processes and exposures, as well as establishing Similar Exposure Groups (SEGs) to organize workers with comparable exposure profiles. These are the activities that structure how you approach the assessment, not the laboratory analysis itself. Gas chromatography doesn’t describe a model step; it’s a tool used during or after sampling to determine actual concentrations.