You are here

Improved Wipes for Surface Sampling of Chemical Agents on Porous Materials

Description:

The Department of Homeland Security (DHS) has a need for a novel surface wipe material that more efficiently removes low volatility chemical agent contamination from porous and absorptive surfaces (e.g., uncoated and coated concrete, painted wallboard, unglazed ceramic tile) than current cellulosic-based, gauze-type, wipe materials. The novel wipe material will further demonstrate the ability to quantitatively release agent, using conventional solvent- based extraction techniques, for analytical identification and quantification of agent contamination on a porous surface.

PHASE I: Development and laboratory proof-of-concept demonstration of: a) a novel surface wipe material system that, when compared to current wipe systems, reproducibly removes at least 45-50% more low volatility chemical agent surrogate from the surface of porous materials (e.g., uncoated and coated concrete, painted wallboard, unglazed ceramic tile), and b) the ability to recover a near quantitative amount of the low volatility chemical agent surrogate from the novel wipe material system using conventional analytical extraction techniques. The demonstration should be conducted in a manner such that the comparison of results is statistically-valid.

PHASE II: Laboratory demonstration of a novel wipe material system using operationally- relevant substrates (e.g., concrete, brick, painted wallboard) that have been contaminated to varying levels and contact times with a low volatility chemical agent. The same requirements apply for efficiency of agent removal and recovery of compound of interest from the novel wipe material by traditional analytical extraction procedures. The successful offeror will be required to work with a laboratory capable of chemical agent operations.)

PHASE III: COMMERCIAL APPLICATIONS: Transition of the technology to DHS S&T projects for response and recovery of critical infrastructure contaminated with a low volatility chemical.

US Flag An Official Website of the United States Government