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A simple and rapid fluorescence method has been developed for the determination of acrylamide in heat-processed food samples. In the determination, acrylamide is degraded through Hofmann reaction to generate vinyl amine, and pyrrolinone is produced when the vinyl amine reacts with fluorescamine, resulting in a strong fluorescence emission at 480nm. Hofmann reaction is a key step for the fluorescence...
A new method for determination of iron(III) has been developed using a kind of rhodamine B derivative fluorescent probe, rhodamine amide (RHA), in acidic HAc–NaAc buffer solution. In this approach, the heavy atom effect of I 3− was applied to quench the fluorescence of RHA. When iron(III) and KI coexisted in HAc–NaAc buffer solution, iron(III) reacted with the excess KI to produce I ...
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