A new method for ¯ow injection analysis (FIA) of traces of uranium by catalytic amperometric detection in nitrate medium is described. Interfering oxygen was removed by in-line degassing. A simple adapter was designed to afford FIA with batch cells comprising a hanging mercury drop electrode. The ca
Indirect determination of iron in a flow-injection system with amperometric detection
✍ Scribed by Liliana Silva R; Luis E. León; Alfredo Calvo C.
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 287 KB
- Volume
- 192
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
The change in peak current resulting from the reaction of Fe(I1) with nitroso-R salt in a flow-injection system is used to quantify Fe(I1) with either single-or dual-electrode amperometric detectors. The current change varies linearly with Fe(I1) concentration from 0 to 200 mg 1-l. The relative standard deviation was about 5% with the single-electrode detector and about 10% with the dual-electrode detector. The method is evaluated for the determination of iron in dietary supplements.
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