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

• Autor(a) principal: Muller,Cristiano C.
• Data de Publicação: 2015
• Outros Autores: Nunes,Thieli S., Muller,Aline L. H., Dressler,Valderi L., Flores,Erico M. M., Muller,Edson I.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of the Brazilian Chemical Society (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000100110
• topic: silicon carbide; pyrohydrolysis; boron; ICP-MS; ICP-OES

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.