Dispersive liquid–liquid microextraction for metals enrichment: A useful strategy for improving sensitivity of laser-induced breakdown spectroscopy in liquid samples analysis
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http://hdl.handle.net/10045/53191
| Títol: | Dispersive liquid–liquid microextraction for metals enrichment: A useful strategy for improving sensitivity of laser-induced breakdown spectroscopy in liquid samples analysis |
|---|---|
| Autors: | Aguirre Pastor, Miguel Ángel | Selva, E.J. | Hidalgo, Montserrat | Canals, Antonio |
| Grups d'investigació o GITE: | Espectroscopía Atómica-Masas y Química Analítica en Condiciones Extremas |
| Centre, Departament o Servei: | Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología | Universidad de Alicante. Instituto Universitario de Materiales |
| Paraules clau: | Dispersive liquid–liquid microextraction | LIBS analysis | Liquid samples | Trace metals determination |
| Àrees de coneixement: | Química Analítica |
| Data de publicació: | de gener-2015 |
| Editor: | Elsevier |
| Citació bibliogràfica: | Talanta. 2015, 131: 348-353. doi:10.1016/j.talanta.2014.07.090 |
| Resum: | A rapid and efficient Dispersive Liquid–Liquid Microextraction (DLLME) followed by Laser-Induced Breakdown Spectroscopy detection (LIBS) was evaluated for simultaneous determination of Cr, Cu, Mn, Ni and Zn in water samples. Metals in the samples were extracted with tetrachloromethane as pyrrolidinedithiocarbamate (APDC) complexes, using vortex agitation to achieve dispersion of the extractant solvent. Several DLLME experimental factors affecting extraction efficiency were optimized with a multivariate approach. Under optimum DLLME conditions, DLLME-LIBS method was found to be of about 4.0–5.5 times more sensitive than LIBS, achieving limits of detection of about 3.7–5.6 times lower. To assess accuracy of the proposed DLLME-LIBS procedure, a certified reference material of estuarine water was analyzed. |
| Patrocinadors: | The authors are grateful to the Spanish Government (project no. CTQ2011-23968) and Regional Government of Valencia (Spain) (project no. ACOMP/2013/072) for the financial support. |
| URI: | http://hdl.handle.net/10045/53191 |
| ISSN: | 0039-9140 (Print) | 1873-3573 (Online) |
| DOI: | 10.1016/j.talanta.2014.07.090 |
| Idioma: | eng |
| Tipus: | info:eu-repo/semantics/article |
| Drets: | © 2014 Elsevier B.V. |
| Revisió científica: | si |
| Versió de l'editor: | http://dx.doi.org/10.1016/j.talanta.2014.07.090 |
| Apareix a la col·lecció: | INV - SP-BG - Artículos de Revistas |
Arxius per aquest ítem:
| Arxiu | Descripció | Tamany | Format | |
|---|---|---|---|---|
 2015_Aguirre_etal_Talanta_final.pdf | Versión final (acceso restringido) | 1,22 MB | Adobe PDF | Obrir Sol·licitar una còpia |
 2015_Aguirre_etal_Talanta_rev.pdf | Versión revisada (acceso abierto) | 1,46 MB | Adobe PDF | Obrir Vista prèvia |
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