The ESR spectrometric titration of iron(II) in water with chromium(VI)
Iron(II) was determined with chromium(VI) by monitoring the formation of chromium(III) in a fixed magnetic field. The solutions were circulated through a flat ESR cell during titration by a peristaltic pump, allowing precise repositioning of the sample cell in the spectrometer cavity and maintenance...
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Published in | Analytical proceedings Vol. 22; no. 12; pp. 379 - 380 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
01.01.1985
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Online Access | Get full text |
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Summary: | Iron(II) was determined with chromium(VI) by monitoring the formation of chromium(III) in a fixed magnetic field. The solutions were circulated through a flat ESR cell during titration by a peristaltic pump, allowing precise repositioning of the sample cell in the spectrometer cavity and maintenance of optimal conditions. Initially incremental additions of titrant were made, and a precision of 0.4 per cent based on 6 replicates obtained. Titrant was then continuously delivered with the volume of titrant proportional to time, and a precision of 0.7 per cent based on 7 replicates was obtained. This technique was suggested where visual indicators were impracticable and where redox reactions giving sufficiently intense ESR signals occurred. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-1 |
ISSN: | 0144-557X |