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Extraction of iridium(IV) from hydrochloric acid media with crown ether in chloroform, and its determination by ICP–AES

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Abstract

A new method for the quantitative extraction and determination of trace amounts of iridium from hydrochloric acid media has been established based on the formation of an ion-association complex of iridium hexachloro anion IrCl6 2– with dicyclohexyl-18-crown-6 (DC18C6) oxonium cation in chloroform, then determination by inductively coupled plasma atomic emission spectrometry (ICP–AES). The effect of various factors (solvent, acid concentration, crown ether, reagent concentration, shaking time, composition of the extracted species, foreign ions, etc.) on the extraction and back-extraction of iridium has been investigated. The procedure was used to determine traces of iridium in palladium chloride and rhodium chloride.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Kanazawa University, Kakuma machi, Kanazawa, Ishikawa 920–1192, Japan, , , , , , JP

    Kazi Zakir Hossain, Cristina T. Camagong & Takaharu Honjo

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  1. Kazi Zakir Hossain
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  2. Cristina T. Camagong
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  3. Takaharu Honjo
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Received: 16 October 2000 / Revised: 27 November 2000 / Accepted: 4 December 2000

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Hossain, K., Camagong, C. & Honjo, T. Extraction of iridium(IV) from hydrochloric acid media with crown ether in chloroform, and its determination by ICP–AES. Fresenius J Anal Chem 369, 543–545 (2001). https://doi.org/10.1007/s002160000689

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  • DOI: https://doi.org/10.1007/s002160000689

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