Abstract
A selective flow injection analysis (FIA) system has been proposed for the spectrophotometric determination of trace amounts of iron based on the 1:2 (metal:ligand) complex formation between iron(II) and 2-pyridyl-3′-sulfophenylmethanone 2-pyrimidylhydrazone(PSPmH). The system permits high throughput of 70 solutions per hour. The lower limit of determination is 10ppb of iron. The procedure has been applied successfully to the determination of iron in water samples. Possibility of further enhancement in the sensitivity in FIA by introducing analogue-derivative spectrophotometric monitoring is also suggested.
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