## How-injection atomic spectrometry with sorbent extraction preconcentration is applied to the simultaneous determination of iron and i&III). Upon injection of a sample containing iron in both oxidation states, iron(III) is directly carried to the flame atomic absorption spectmmeter whereas the i
Flow-injection determination of iron(II), iron(III) and total iron with chemiluminescence detection
β Scribed by E.G Sarantonis; Alan Townshend
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 306 KB
- Volume
- 184
- Category
- Article
- ISSN
- 0003-2670
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β¦ Synopsis
Iron(I1) (1.0 X 10-g-1.0 X 10e6 M) is determined by the production of chemiluminescence in a luminol system in the absence of added oxidant. Iron(II1) (2.0 x lo-'-2.0 x 10e6 M) is determined after reduction to iron(I1) in a silver reductor mini-column in the fiow system. Cobalt, chromium, copper and manganese interfere.
π SIMILAR VOLUMES
In the flow system described, iron(I1) is measured spectrophotometrically with l,lO-phenanthroline, and total iron is determined in the same flow line by atomic absorption spectrometry. Linear calibration ranges are 0.1-35 and 0.1-10 rg ml-' for iron and total iron, respectively.
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 stan
In this article, we describe an automated flow-injection system for simultaneous determination of Cl β«Χβ¬ and total Fe. Chloride was potentiometrically determined, and total Fe was colorimetrically determined after reduction of Fe(III) to Fe(II) and complexation with 1,10-phenanthroline. Both measure