Determination of maleic hydrazide in onions and potatoes using solid-phase extraction and anion-exchange high-performance liquid chromatography

Abstract

A simple method for the determination of maleic hydrazide in onions and potatoes using solid-phase extraction cartridges for clean-up and anion-exchange high-performance liquid chromatography is described. Solid-phase extraction cartridges from different manufacturers are also compared. Recoveries of maleic hydrazide added to onions and potatoes at 1.5–15 mg kg^–1 levels averaged between 81 and 107%.