Abstract
Flow injection was used in combination with chemiluminescence detection to determine 30 amol of ascorbic acid based on a luminol-Fe
3+
-hydrogen peroxide system. The method was applied to the determination of ascorbic acid in pure form, pharmaceutical preparations and fruit juices. The method is sensitive, rapid (sampling rate 2-56 samples h
-1
) and tolerates the presence of common ingredients usually found in fruit juices and drug formulations.