Patent ID: 9423340
Filing Date: 2016-08-23
CPC Classification: C02F,G01N

Claim Text:
1. A method to measure the concentration of dissolved ozone in pure or contaminated water comprising the steps of: a) capturing and isolating a known volume or mass of water to be analyzed; b) sparging the water sample with air or another unreactive gas at a known or measured flow rate for a period of time long enough to remove more than 60%, of the dissolved ozone, c) measuring the concentration of ozone in the sparging gas as a function of time, d) measuring or knowing the flow rate of the sparging gas as a function of time, e) mathematically integrating the product of the ozone concentration and gas flow rate over the sparging time interval to obtain the mass of ozone sparged from the sample, f) correcting for the fraction of ozone not sparged from the sample based on either calibration or integration under the measured exponential ozone decay curve to infinity, and g) calculating the dissolved ozone concentration in the original sample by dividing the corrected mass of ozone by the mass of the water sample and converting to appropriate units such as parts-per-million (ppm).