Determination of Boron in Silicon Carbide by ICP-OES and ICP-MS after Sample Preparation using Pyrohydrolysis

Determination of Boron in Silicon Carbide by ICP-OES and ICP-MS after Sample Preparation using Pyrohydrolysis

Pyrohydrolysis was used for sample preparation of silicon carbide (SiC) and subsequent determination of B using inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS). Important parameters for pyrohydrolysis method as temperature, air and water flow rates, reaction time and use of V2O5 were evaluated. In addition, a study of W spectral interference on B emission lines was evaluated for ICP-OES determination. Accuracy was evaluated using certified reference material (CRM BAM S003) and bias value lower than 1% between the certified and determined value was achieved. Limit of detection (LOD) of 0.010 μg g−1 was obtained using pyrohydrolysis and ICP-MS. Pyrohydrolysis is a very simple sample preparation method that allowed the use of deionized water as absorbing solution for B determination in SiC.

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Bibliographic Details
Main Authors: Muller,Cristiano C., Nunes,Thieli S., Muller,Aline L. H., Dressler,Valderi L., Flores,Erico M. M., Muller,Edson I.
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Química 2015
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000100110
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Description
Summary:Pyrohydrolysis was used for sample preparation of silicon carbide (SiC) and subsequent determination of B using inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS). Important parameters for pyrohydrolysis method as temperature, air and water flow rates, reaction time and use of V2O5 were evaluated. In addition, a study of W spectral interference on B emission lines was evaluated for ICP-OES determination. Accuracy was evaluated using certified reference material (CRM BAM S003) and bias value lower than 1% between the certified and determined value was achieved. Limit of detection (LOD) of 0.010 μg g−1 was obtained using pyrohydrolysis and ICP-MS. Pyrohydrolysis is a very simple sample preparation method that allowed the use of deionized water as absorbing solution for B determination in SiC.

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