Dissolution of Al-Fe materials and analysis by inductively coupled plasma – atomic emission spectrometry |
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Authors: | Assad S Al-Ammar and R M Barnes |
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Institution: | (1) University of Massachusetts, Department of Chemistry, Lederle GRC Tower, Box 34510, Amherst, MA 01003-4510, USA, US |
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Abstract: | A technique was developed for the dissolution of Al-Fe materials containing difficult to dissolve Al2O3. The developed procedure uses HCl and HNO3 for initial sample attack followed by digestion with a mixture of H3PO4 and H2SO4 at 200 °C. This procedure was employe to dissolve Al-Fe material samples before the determination of Al and Fe. Minor and
trace elements (B, Cr, Cu, Mo, Si, Zr) were determined after dissolution in HCl and HNO3. Results of a round robin study verified the procedure accuracy. The developed methods have the required accuracy and precision
to be used as a quality control procedure for Al-Fe materials analysis.
Received: 9 February 1998 / Revised: 1 April 1998 / Accepted: 4 April 1998 |
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