Would you please tell me how to get rid of NOx in ozone??

Question

I wonder if there are some methods could remove impurity of NOx in ozone gas besides using oxygen as material.
And are there any sensitive methods to measure ozone in water???
Thanks alot

Answer 1

If you bubble the gas mixture through alkali, all the acidic NOx impurities will dissolve and react to form salts.

To measure ozone in water, I would expect a back titration method using KI, and then sodium thiosulphate, would work.