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- W918563554 abstract "A simple and low-cost flow injection (FI) system with two solid-phase reactors and spectrophotometric detection for speciation ofFe(III) and Fe(II) has been proposed. A polyethylene minicolumn was filled with Jones reductor (35% m/m suspended on silica gel beads). (Reactor 1) and another column filled only with the silica gel (Reactor 2) were incorporated into a flow system. The sample containing both Fe(III) and Fe(II)) was injected into a carrier stream (1,10-phenanthroline dissolved in buffer solution ofpH 3.7). In reactor 1 Fe(III) was reduced to Fe(II) by the Jones reductor. After that the sum: Fe(III) + Fe(II) was detected spectrophotometrically at A = 514 nm as a complex of the analyte with 1,10-phenanthroline. Fe(II) originally present in the sample was determined analogously after the injection to reactor 2. The amount ofFe(III) in the sample was estimated as the difference in the measured analytical signals. The calibration plot was linear up to the iron species concentration of 25 μg mL - 1 . Detection limit (3σ) was 35 μg L - 1 and the relative standard deviation < 1.7%." @default.
- W918563554 created "2016-06-24" @default.
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- W918563554 date "2004-01-01" @default.
- W918563554 modified "2023-09-24" @default.
- W918563554 title "The application of the solid-phase jones reagent as a reductant in the speciation flow injection analysis of Fe(III) and Fe(II) in real samples" @default.
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