| The chemicals that most often exceeded limits were naphthalene, formaldehyde and acetaldehyde. |
| The enzyme aldehyde dehydrogenase is responsible for efficient metabolism of alcohol after it has been oxidised to acetaldehyde. |
| Experience in distilling aldehydes led us to believe that acetaldehyde would form acetals in the overheads of the low pressure column. |
| Another contributory factor is the conversion of alcohol to acetaldehyde by the liver. |
| Mix the diphenylamine reagent, as above, and split it into two aliquots before adding the acetaldehyde. |
| The validity of this assay may be questioned since acetaldehyde is a highly volatile and reactive molecule. |
