Chemiluminescence related instrumentation

A chemiluminescence method has been described for the determination of PG in edible oils using the enhancing effect of this antioxidant on the luminescent signal of 2-phenyl-4,5-di(2-furyl)-lH-imidazole (PDFI) and potassium ferricyanide system in an alkaline medium [57]. The method involves the use of solid-phase extraction with a Cjg cartridge as the stationary phase for sample treatment. The interferents were retained on the cartridge while PG was eluted. A flow system was used to introduce the reagents (PDFI, sodium hydroxide, and potassium ferricyanide) and the sample into the sample cell of the instrument and to measure the enhanced chemiluminescence signal, which was linearly related to the PG concentration. A detection limit of 36 ng/mL PG was obtained. 

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