Determination of trace elements in undiluted wine samples using an automatized total sample consumption system coupled to ICP-MS

Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10045/84450
Información del item - Informació de l'item - Item information
Título: Determination of trace elements in undiluted wine samples using an automatized total sample consumption system coupled to ICP-MS
Autor/es: Cerutti, Claudia | Sánchez, Carlos | Sánchez, Raquel | Ardini, Francisco | Grotti, Marco | Todolí Torró, José Luis
Grupo/s de investigación o GITE: Análisis de Polímeros y Nanomateriales
Centro, Departamento o Servicio: Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología
Palabras clave: Trace elements | Undiluted wine samples | Total sample consumption system | ICP-MS
Área/s de conocimiento: Química Analítica
Fecha de publicación: 30-nov-2018
Editor: Royal Society of Chemistry
Cita bibliográfica: Journal of Analytical Atomic Spectrometry. 2019, 34: 674-682. doi:10.1039/C8JA00391B
Resumen: A novel method for the elemental analysis of undiluted wine samples was optimized and validated. The method was based on the use of a high-temperature torch integrated sample introduction system (hTISIS) coupled to inductively coupled plasma mass spectrometry (ICP-MS). The operating conditions (hTISIS temperature and liquid flow rate) were optimized in terms of sensitivity and matrix effects. Low liquid flow rates allowed to continuously introduce organic samples into the plasma source with minimum soot as well as salty deposits formation at the ICP-MS interface and/or plasma thermal degradation. A double pass Scott-type spray chamber thermostated at 2ºC was taken as the reference sample introduction system. The results indicated that the hTISIS operated at 125ºC and 30 µL min-1 as liquid flow rate improved the sensitivity and mitigated the extent of matrix effects compared to the conventional system. Once the optimum conditions were selected, the method was validated and applied to the determination of sixteen trace elements (Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, As, Mo, Cd, Nd, Sm, Gd, Tb and Pb) in ten real wine samples. The sample was merely aspirated to the nebulizer with no additional preparation. For the sake of comparison, the samples were microwave digested and analyzed using a conventional setup. Method detection limits achieved by the hTISIS were from 2 to 40 times lower than those found using the standard procedure and ranged from 0.002 to 6 µg kg-1. Furthermore, the accuracy of the quantification using the hTISIS was not significantly different as compared to that afforded by the conventional procedure and substantially improved in comparison with the direct analysis of wine using a Scott spray chamber. Sample throughput was close to 10 h-1 that was in clear contrast with 2 h-1, estimated when the digestion method was used. Finally, the suitability of the developed method for the routine analysis of wine samples was demonstrated by performing a 20-hours long analysis sequence. Good signal stability and accurate results were obtained for ten representative Italian and Spanish wines.
URI: http://hdl.handle.net/10045/84450
ISSN: 0267-9477 (Print) | 1364-5544 (Online)
DOI: 10.1039/C8JA00391B
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © The Royal Society of Chemistry 2018
Revisión científica: si
Versión del editor: https://doi.org/10.1039/C8JA00391B
Aparece en las colecciones:INV - NANOBIOPOL - Artículos de Revistas

Archivos en este ítem:
Archivos en este ítem:
Archivo Descripción TamañoFormato 
Thumbnail2018_Cerutti_etal_JAnalAtSpectrom_accepted.pdfAccepted Manuscript (acceso abierto)585,3 kBAdobe PDFAbrir Vista previa
Thumbnail2018_Cerutti_etal_JAnalAtSpectrom_final.pdfVersión final (acceso restringido)548,3 kBAdobe PDFAbrir    Solicitar una copia


Todos los documentos en RUA están protegidos por derechos de autor. Algunos derechos reservados.