Abstract
Glyoxal is an unstable and extremely reactive molecule represents an important part of biological processes. The detection of glyoxal using soft chemical ionization techniques is, due to its behavior, nontrivial.
In this article we present results of investigation of the reactions of thermalized H3O+, NO+ and O2+ ions with glyoxal molecules interactions using SIFT-MS experimental technique. The main result is characterization of the dependences of these reactions on variable sample humidity corresponding to flow tube H2O concentrations.
We have observed formation of protonated formaldehyde (m/z 31) from H3O+ reagent ions in presence of glyoxal and water. Additionally, association into M(NO)+ ion and charge transfer into M+. ion was observer for NO+ and O2+. ions respectively.