Dispersive liquid–liquid microextraction for metals enrichment: A useful strategy for improving sensitivity of laser-induced breakdown spectroscopy in liquid samples analysis

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/53191
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Title: Dispersive liquid–liquid microextraction for metals enrichment: A useful strategy for improving sensitivity of laser-induced breakdown spectroscopy in liquid samples analysis
Authors: Aguirre Pastor, Miguel Ángel | Selva, E.J. | Hidalgo, Montserrat | Canals, Antonio
Research Group/s: Espectroscopía Atómica-Masas y Química Analítica en Condiciones Extremas
Center, Department or Service: Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Dispersive liquid–liquid microextraction | LIBS analysis | Liquid samples | Trace metals determination
Knowledge Area: Química Analítica
Issue Date: Jan-2015
Publisher: Elsevier
Citation: Talanta. 2015, 131: 348-353. doi:10.1016/j.talanta.2014.07.090
Abstract: 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.
Sponsor: 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
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2014 Elsevier B.V.
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.talanta.2014.07.090
Appears in Collections:INV - SP-BG - Artículos de Revistas

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