Rapid method for the spectrophotometric determination of iridium(IV)

Keshavan, B. and Nagaraja, P. (1985) Rapid method for the spectrophotometric determination of iridium(IV). The analyst, 110 (8). pp. 1027-1029. ISSN 0003-2654

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Abstract

Iridium(IV) forms, instantaneously, a red radical cation with perazine dimalonate, at room temperature in a phosphoric acid medium. The radical cation exhibits an absorption maximum at 515 nm and Beer's law is obeyed for up to 24 μg ml-1 of iridium. Sandell's sensitivity of the reaction is 0.019 μg cm-2 and the molar absorptivity is 9.93 � 103 l mol-1 cm-1. The tolerance limits to platinum metals, base metals and common anions are reported. The method is applied to the determination of the iridium content in the synthetic mixtures corresponding to the iridium - rhodium fraction separated from platinum metal concentrates.

Item Type: Article
Subjects: C Chemical Science > Chemistry
Divisions: Department of > Chemistry
Depositing User: Dhruva Kumar
Date Deposited: 20 May 2021 10:00
Last Modified: 20 May 2021 10:00
URI: http://eprints.uni-mysore.ac.in/id/eprint/13663

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