Removal of iron interferences by solvent extraction for geochemical analysis by atomic-absorption spectrophotometry
Talanta
By: L. Zhou, T. T. Chao, and R.F. Sanzolone
Links
- The Publications Warehouse does not have links to digital versions of this publication at this time
- Download citation as: RIS | Dublin Core
Abstract
Iron is a common interferent in the determination of many elements in geochemical samples. Two approaches for its removal have been taken. The first involves removal of iron by extraction with methyl isobutyl ketone (MIBK) from hydrochloric acid medium, leaving the analytes in the aqueous phase. The second consists of reduction of iron(III) to iron(II) by ascorbic acid to minimize its extraction into MIBK, so that the analytes may be isolated by extraction. Elements of interest can then be determined using the aqueous solution or the organic extract, as appropriate. Operating factors such as the concentration of hydrochloric acid, amounts of iron present, number of extractions, the presence or absence of a salting-out agent, and the optimum ratio of ascorbic acid to iron have been determined. These factors have general applications in geochemical analysis by atomic-absorption spectrophotometry. ?? 1985.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Removal of iron interferences by solvent extraction for geochemical analysis by atomic-absorption spectrophotometry |
| Series title | Talanta |
| Volume | 32 |
| Issue | 6 |
| Year Published | 1985 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Talanta |
| First page | 475 |
| Last page | 478 |
| Google Analytic Metrics | Metrics page |