Patent ID: 6304327
Filing Date: 2001-10-16
Classification: G01N

Abstract:
A method of photometrically analyzing a dilute solution containing chlorine dioxide and comprising the steps of:(a) introducing a sample flow into a conduit of a chlorine dioxide analyzer;(b) turning at least one light emitting diode on and off and when in the on position a light beam is emitted from the diode and passed through the sample;(c) receiving said emitted light that has passed through the sample onto a beam splitter, wherein said light beam is separated into a transmitted light and a reflected light;(d) directing the transmitted light through a filter to a first detector and directing the reflected light to a second detector, and(e) determining the chlorine dioxide concentration by detecting a non-monochromatic blue light emitted by one of said light emitting diodes and measuring the inversely proportional response of said second detector without logarithmic conversion.