Metal and metalloid determination in bioethanol through inductively coupled plasma-optical emission spectroscopy
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http://hdl.handle.net/10045/51292
Títol: | Metal and metalloid determination in bioethanol through inductively coupled plasma-optical emission spectroscopy |
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Autors: | Sánchez, Carlos | Lienemann, Charles Philippe | Todolí Torró, José Luis |
Grups d'investigació o GITE: | Análisis de Polímeros y Nanomateriales |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología |
Paraules clau: | Bioethanol | Metal | ICP-OES | High temperature torch integrated sample introduction system |
Àrees de coneixement: | Química Analítica |
Data de publicació: | 1-de gener-2016 |
Editor: | Elsevier |
Citació bibliogràfica: | Spectrochimica Acta Part B: Atomic Spectroscopy. 2015, 115: 16-22. doi:10.1016/j.sab.2015.10.011 |
Resum: | A new method to carry out the elemental determination of metals in bioethanol through ICP-OES has been developed. The procedure is based on the use of a heated torch integrated sample introduction system (hTISIS) to directly introduce the vaporized sample into the plasma. Two injection modes (continuous liquid aspiration and air-segmented flow injection analysis) have been evaluated. In a first step, the matrix effects caused by several ethanol–water mixtures were removed by operating the hTISIS at 400 °C in segmented injection. Meanwhile, the results also proved that the system could be operated in continuous mode at 200 °C with the complete interference removal. Finally, twenty-eight real samples with bioethanol contents between 55% and 100% were analyzed with the methods previously developed. Regarding validation, recoveries from 80% to 120% were obtained for 18 analytes and the concentrations found with the proposed method were in agreement with those encountered with a preconcentration method, taken as a reference procedure. Limits of detection went from 3 ng mL− 1 for manganese to about 500 ng mL− 1 for calcium. This allowed to quantify Cr, Fe, Mg, Mn and Zn in segmented flow injection and Al, Cd, Cr, Cu, K, Mg, Mn, Na and Zn in continuous sample aspiration mode in bioethanol samples. |
Patrocinadors: | The authors wish to acknowledge the IFPEN for the financial support and samples provided and the UNGDA for the samples provided to carry out this work. C. Sánchez would like to thank the Ministry of Education, Culture and Sports, Spain for the grant FPU 13/01438. |
URI: | http://hdl.handle.net/10045/51292 |
ISSN: | 0584-8547 (Print) | 1873-3565 (Online) |
DOI: | 10.1016/j.sab.2015.10.011 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © 2015 Elsevier B.V. |
Revisió científica: | si |
Versió de l'editor: | http://dx.doi.org/10.1016/j.sab.2015.10.011 |
Apareix a la col·lecció: | INV - NANOBIOPOL - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2016_Sanchez_etal_SpectrActaPartB_final.pdf | Versión final (acceso restringido) | 456,22 kB | Adobe PDF | Obrir Sol·licitar una còpia |
2016_Sanchez_etal_SpectrActaPartB_accepted.pdf | Accepted Manuscript (acceso abierto) | 763,62 kB | Adobe PDF | Obrir Vista prèvia |
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