Abstract: Many simple carbohydrates and other polyhydroxy compounds can be oxidized at a silver oxide surface. The oxidation is via an electrocatalytic mechanism involving a Ag(I) oxide. This forms the basis of a flow stream detector operated in an amperometric mode which may be used for either flow injection or high performance liquid chromatography (HPLC) applications. The title electrode has been applied to the detection of simple carbohydrates, triglycerides and nucleic acid components.

Abstract: All six inositol phosphate congeners were separated on an anion-exchange column (25 cm x 4 mm) of Aminex A-27 protected by a guard column (4 cm x 4 mm). Elution at 0.5 mL min-1 was effected with 0.5 mM Na4EDTA containing a complex gradient from 0.1 to 0.5 M NaCl (details given). Phosphorus-specific detection was achieved by high-intensity UV irradiation of the eluate in a post-column reactor to produce orthophosphate, which then reacted at 55°C in a flow injection analyzer. with ascorbic acid - molybdate reagent (flow rate 0.1 mL min-1). Spectrophotometric detection was performed at 668 nm. Sub mg L-1 levels of P were detected with 50 to 250 µL injections. The method, which can be used to separate other organophosphorus compounds, was applied to the analysis of high-volume stream water samples after concentration. by a described procedure.