Proton transfer reaction mass spectrometry (PTR-MS) was used to detect n
generally have a lower proton affinity than water and therefore proton transfer (PT) by
reaction with H3
is not an effective mechanism for their detection.
In this study, we developed a method using a conventional PTR-MS to detect n
by optimizing ion source and drift tube conditions to vary the relative amounts of different
primary ions (H3
) in the reaction chamber (drift tube).