A novel method for the determination of trace formaldehyde in food samples has been established using a catalytic kinetic fluorimetry technique. It is based on the fact that the oxidation of pyronine Y by sodium periodate is catalyzed by formaldehyde in phosphoric acid. When the excitation wavelength was set at 546 nm, it was observed that decreased intensity (ΔF) of fluorescence at 563 nm was proportional to the concentration of formaldehyde in the range 0 to 0.30 μg mL-1. The limit of detection and the average recovery for formaldehyde were...
