Targeted chemicals consisted of precursors (nitrobenzene and phenol); pesticides (carbaryl, chlordane and malathion); and two surrogates of CWAs, namely, malathion for O-ethyl S-(2-[diiso- propylamino]ethyl) methylphosphonothioate (VX) and 2-chloroethyl ethyl sulfide (2-CEES), also known as half-mustard, for sulfur mustard (HD) [9]. The selection of these CWA surrogates was based in part of chemical similarities with the actual CWA that would allow for the hydrolysis or oxidation reactions to occur at the same nucleus. These surrogates may therefore not be the most suitable surrogates for assessing any adsorption or permeation into a material.