Question

During analysis of NO2 using Chemiluminescent analyser, why is NO2 not made to react with ozone directly?

(a) Less accuracy

(b) It is a slow process

(c) It leads to contamination of the sample

(d) It does not produce luminescence

This question was addressed to me in an interview for job.

My doubt is from NO2 Analyser topic in division Industrial Gas Analysers of Analytical Instrumentation

Answer 1

Right option is (b) It is a slow process

The best I can explain: During analysis of NO2 using Chemiluminescent analyser, NO2 is not made to react with ozone directly because it is a slow process. Hence, it is converted to NO using catalytic reactions or converters.