Patent ID: 8741657
Filing Date: 2014-06-03
Classification: G01N,Y10T

Abstract:
1. A method of a detecting a change in a chemical composition of a gas stream comprising: generating the gas stream; placing a gas sensing material in the gas stream, where the gas sensing material is comprised of, contacting the gas sensing material with a monitored stream, where the monitored stream is at least a portion of the gas stream, and illuminating the gas sensing material with a light source emitting incident light; collecting exiting light, where the exiting light is light that originates at the light source and is transmitted or reflected by the gas sensing material, and monitoring a plasmon resonance peak based on a comparison of the incident light and the exiting light using absorption spectroscopy; and detecting a change in the plasmon resonance peak, thereby detecting the change in the chemical composition, and thereby monitoring the chemical composition of the gas stream.