Patent ID: 6579722
Filing Date: 2003-06-17
Classification: G01N,Y02A,Y10T

Abstract:
A method for the selective chemiluminescence detection of a vapor-phase analyte in a gas phase including a mixture of gases, comprising the steps of:exposing a sensing film to said gas phase including said analyte, said sensing film comprising a polymeric film having immobilized therein a chemiluminescent reagent, an optional inorganic catalyst for catalyzing the chemiluminescence interaction between said analyte and said chemiluminescent reagent, and optionally, a buffer, said polymeric film being selectively sorbent for said analyte as a result of solubility interactions between said polymeric film and said analyte, said chemiluminescent reagent having a greater chemiluminescent responsiveness to said analyte than to other components of said gas phase; and detecting any chemiluminescence generated upon said exposure of said sensing film to said, whereby said selective sorption by said polymeric film significantly concentrates said analyte within said film and thus results in a detectable signal greater than that which would occur without said selective sorption.