The aliphatic aldehydes were more abundant than aromatic and branch-chain aldehydes since whenever either cooking oil or food can produce a lot of carbonyl compounds when heated.

• 从分布上来看，直链的羰基化合物的浓度远远高于支链和环状的羰基化合物的浓度。因为无论是烹调油或者食物加热时都可以产生大量的羰基化合物。