Analytical testing of the interference standard method (ifs) for metals in wines by inductively coupled plasma mass spectrometry

• MÓNICA P LATORRE ^[1] ; RODRIGO A VIDAL ^[1] ; ELIZABETH GONZÁLEZ ^[2] ; ROSARIO CASTILLO ^[1] ; CARLOS PEÑA-FARFAL ^[1] ; LEONARDO D BENNUN ^[3] ; JOSÉ Y NEIRA ^[1]
  1. [1] University of Concepcion Faculty of Pharmacy Departament of Instrumental Analysis
  2. [2] Catholic University of Santísima Concepcion Faculty of Science
  3. [3] University of Concepcion Faculty of Physical Sciences and Mathematics Departament of Physical

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• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 60, Nº. 3, 2015, págs. 3083-3087
• Idioma: inglés
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  • An analytical testing study of interference standard method (IFS) for metals in wines with low and high residual sugar by inductively coupled plasma mass spectrometry (ICP-MS) was evaluated. Selection of IFS probes was based on the ions formed in the argon plasma, such as natural 38Ar+ or contaminant like 83Kr+ or also ions provided from the matrix sample (for instance, 13C+). The analytical signal was obtained from ratio between the original signals of the analyte and those of the IFS probe species. The accuracy was confirmed using a t-test statistic for comparison between the concentrations obtained by Flame Atomic Absorption Spectrometry (FAAS) and ICP-MS. In a first study, the IFS effect was analyzed by comparing the correlation coefficients obtained with or without dividing the analytical signal by the IFS. Using the 83Kr+ IFS probe provide always better results in the determination of Fe, Mn and Zn compared to 13C+ and 38Ar+.