Patent ID: 6406669
Filing Date: 2002-06-18
Classification: G01N,Y10T

Abstract:
An apparatus for quantitatively determining the amount of ammonia in a fluid comprising, in combination:(a) a transparent film consisting essentially of polyaniline; (b) means for exposing said polyaniline film to a fluid containing ammonia such that ammonia is adsorbed onto said polyaniline film; (c) means for directing light having a chosen wavelength through said polyaniline film; (d) means for detecting the chosen wavelength of light passing through said polyaniline film; and (e) means for comparing the amount of light detected by said means for detecting light passing through said polyaniline film with the amount of light detected by said means for detecting light passing through said polyaniline film when there is no ammonia present in the fluid, whereby the amount of ammonia in the fluid is quantitatively determined.