Answer to Question #121868 in Physical Chemistry for Harpal padhiyar

Question

5 Which molecules of simple hydrocarbons may interfere after ionization with
the masses of oxygen 16O, 17O and 18O when measured with a mass
spectrometer? How can we make sure they are absent

Answer 1

The molecules which can interfere are $N_2$ and$-CN$

There are several test for nitrogen finding in any molecules or hydrocarbon.