M. J. Holdoway, J. L. Willans
1958
Citations
0
Influential Citations
4
Citations
Journal
Analytica Chimica Acta
Abstract
Abstract Tris( o -hydroxyphenyl)phosphine oxide is introduced as a new colorimetric reagent for the determination of ferric iron in solutions 0.3–2.5 M nitric acid. The only other cation known to interfere in the determination is the ceric ion (Ce +4 ). The colour of the complex is stable and is found to obey Beer's law over a wide concentration range.