A reactive polymer-supported porous film for a battery separator containing a substrate porous film of a porous film and a reactive polymer supported on the substrate porous film. The system and method are temperature controlled to ensure that the toxins or pollutants are neither formed nor destroyed in the process of obtaining a sample for analysis. A third element, such as a host or carrier substrate, is bonded to the second element or to the remaining portion of the second element to form a bonded structure. The performance of such devices may be further improved by using an electrically conductive adhesive to attach the die and to electrically connect the silicon substrate region to the package’s conductive header, substrate, or die attach pad, which in turn is typically connected to one or more package pinsballs.