Detection of CBW Agents and Explosives With an Immunoassay Film Badge

In this work, a small, dry immunoassay film badge (IFB) is shown to be feasible for the the detection of vapor from explosives and toxic compounds. The 1KB retains the unique specificity and sensitivity that characterizes immunoassays, but achieves fieldable simplicity and convenience by avoiding wet chemistry. The capacity of the IFB is sufficient to allow repeated use. Data indicate that IFBs can be developed to respond in a few seconds to parts-per-trillion levels of vapor, especially in dynamically acquired samples of air.