Evaluation of a microwave desolvation system in inductively coupled plasma mass spectrometry with low acid concentration solutions
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Título: | Evaluation of a microwave desolvation system in inductively coupled plasma mass spectrometry with low acid concentration solutions |
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Autor/es: | Mora, Juan | Hernandis Martínez, Vicente | Veen, Eric H. van | Loos-Vollebregt, Margaretha T.C. de |
Grupo/s de investigación o GITE: | Espectrometría Atómica Analítica |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología | Delft University of Technology. Laboratory of Materials Science |
Palabras clave: | Microwave desolvation | Acid solution | Inductively coupled plasma mass spectrometry | Oxide level | Doubly-charged ion level | Polyatomic spectral interference |
Área/s de conocimiento: | Química Analítica |
Fecha de publicación: | mar-1998 |
Editor: | Royal Society of Chemistry |
Cita bibliográfica: | MORA PASTOR, Juan, et al. “Evaluation of a microwave desolvation system in inductively coupled plasma mass spectrometry with low acid concentration solutions”. Journal of Analytical Atomic Spectrometry (JAAS). Vol. 13, Issue 3 (1998). ISSN 0267-9477, pp. 175-181 |
Resumen: | The behaviour of a desolvation system based on microwave heating (termed a microwave desolvation system, MWDS) with low acid concentration solutions was evaluated in inductively coupled plasma mass spectrometry. Studies included water, sulfuric acid, perchloric acid, nitric acid and hydrochloric acid. The best performance of the MWDS was obtained at low liquid uptake rate and low acid concentrations. The analytical behaviour of the MWDS depends on the nature and composition of the solution used. In comparison with water, acid solutions provide up to four times higher ion intensities for the elements tested. In comparison with nitric and hydrochloric acid, sulfuric and perchloric acid provide higher ion intensities but also higher CeO+/Ce+ ratios whereas Ba2+/Ba+ ratios are lower. The limits of detection (LODs) are of the same order of magnitude for all acid solutions used, unless the specific isotope/solvent combinations suffer from spectral interference. In comparison with the conventional sample introduction (CS) without desolvation system the MWDS provides between 2 and 14 times higher ion intensities for the isotopes tested. For nitric and hydrochloric acid solutions the MWDS gives rise to lower CeO+/Ce+ratios and higher Ba2+/Ba+ ratios. For sulfuric and perchloric acid these tendencies are the opposite. For the isotopes that are not subject to interference, the LODs obtained with the MWDS are up to a factor of 10 lower than those obtained with CS. |
Patrocinador/es: | DGICyT (Spain) (Project PB95–0693). |
URI: | http://hdl.handle.net/10045/13618 |
ISSN: | 0267-9477 (Print) | 1364-5544 (Online) |
DOI: | 10.1039/a706833f |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/10.1039/a706833f |
Aparece en las colecciones: | INV - GEAA - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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MWDS en ICPMS.pdf | 232,01 kB | Adobe PDF | Abrir Vista previa | |
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