Colorimetric determination of formaldehyde via free radical formation.
Aliphatic aldehydes react with 2,3-dimethyl-2,3-bis-(hydroxylamino)butane and sodium periodate for form colored free radicals. These radicals were stabilized with pyridine in aqueous solution. Low levels of formaldehyde in aqueous solutions were determined utilizing this reaction.
D003124:Colorimetry / Q000379:methods; D005557:Formaldehyde / Q000032:analysis*; D005609:Free Radicals
D005609:Free Radicals; D005557:Formaldehyde