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Issue 12, 2014
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Determination of boron in silicon without use of additional complexing agents

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Abstract

Methods for the determination of boron in various matrices described in the literature usually employ complexing agents like mannitol to retain the volatile boron species during matrix evaporation steps. However, also relatively high boron recoveries from silicon containing samples have been reported when no complexing agents were added to the digestion acids. The mechanism behind this matrix-dependant recovery has been investigated by studying the boron recovery in the analysis of solar grade silicon. It was found that the NH4+ ion formed by the reduction of nitric acid during sample digestion is responsible for the higher recovery of boron, which leads to a possible analysis method without the use of complexing agents if the sample preparation procedure is carefully optimized.

Graphical abstract: Determination of boron in silicon without use of additional complexing agents

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Article information


Submitted
19 Feb 2014
Accepted
16 Apr 2014
First published
16 Apr 2014

Anal. Methods, 2014,6, 4003-4008
Article type
Paper
Author version available

Determination of boron in silicon without use of additional complexing agents

M. Balski, F. Emmerling, H. Kipphardt and U. Panne, Anal. Methods, 2014, 6, 4003
DOI: 10.1039/C4AY00410H

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