Near infrared spectrum measurement of gases

摘要

The present invention relates to a novel method of determining HBr levels in an effluent stream comprising measuring the near infrared (NIR) absorbance of HBr in said effluent stream. The present invention also relates to a novel method of determining the onset of a chemical reaction which is indicated by the production of HBr comprising measuring near infrared (NIR) absorbance of HBr in an effluent stream and further relates to a method of determining removal of HBr in a chemical reaction comprising measuring near infrared (NIR) absorbance of HBr in an effluent stream wherein disappearance of HBr bands indicates removal of HBr in said reaction.