Normalization of Contamination Conditions for Measurement of Agent Retention and Decontamination Performance on Materials
Abstract
This report describes the evaluation of agent retention and decontaminant performance for O-ethyl-S-(2-diisopropylaminoethyl) methyl phosphonothiolate (VX) and bis(2-chloroethyl) sulfide (HD) on polyurethane coatings, alkyd coatings, and silicone elastomer substrates using multiple contamination densities applied in various drop volumes and counts. An analysis of the retained agent per drop of agent applied, accounting for the volume of the drop, allowed for more effective comparison of results across multiple test conditions, which enabled better translation from laboratory to operational context as compared with previous area and contamination density approaches. This normalization of retained agent mass to agent drop provides finer resolution beyond an average contamination density (i.e., starting challenge), which is shown to be ultimately necessary for decontamination technology evaluations. This approach enables simple calculation of retained agent mass for alternate test conditions and should provide an improved scale-up approach to translate laboratory results to operational context.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2022
- Accession Number
- AD1170213
Entities
People
- Brent A Mantooth
- David G. Gehring
- Janlyn H. Eikenberg
- Jill L. Ruth
- Michael J. Chesebrough
- Michelle L. Sheahy
- Shawn M. Stevenson
- Stefanie Q. Smallwood
- Thomas P. Pearl
Organizations
- Leidos
- United States Army Soldier Systems Center