OH HCHO, CH3CHO

The reaction of OH and aldehydes are thought to be H atom abstraction from the aldehyde group in general. The reactions of HCHO and CH3CHO are described here as one of typical atmospheric reaction of the OH with organic compounds, in parallel with the H atom abstraction reactions from alkyl groups of alkanes and addition reactions to C-C double bonds of alkenes taken up so far. 

The reaction of OH and HCHO has been confirmed to be H atom abstraction from aldehyde group, 

In the case of the reaction of OH and CH3CHO, two possibilities of H atom abstraction, 

5 Homogeneous Elementary Reactions in the Atmosphere and Rate Constants 

The HCO, CH3CO, and CH2CHO radicals formed in the reactions (5.50), (5.52), and (5.53) react with O2 in the atmosphere to form peroxy radicals, 

---