Elemental speciation by capillary electrophoresis with inductively coupled plasma spectrometry: A new approach by flow focusing® nebulization

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/38379
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Title: Elemental speciation by capillary electrophoresis with inductively coupled plasma spectrometry: A new approach by flow focusing® nebulization
Authors: Kovachev, Nikolay | Aguirre Pastor, Miguel Ángel | Hidalgo, Montserrat | Simitchiev, Kiril | Stefanova, Violeta M. | Kmetov, Veselin Y. | 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: Hyphenation | Capillary Electrophoresis | ICP-OES | ICP-MS | Chromium speciation | Flow-Focusing® nebulization
Knowledge Area: Química Analítica
Issue Date: 13-Jun-2014
Publisher: Elsevier
Citation: Microchemical Journal. 2014, Accepted Manuscript. doi:10.1016/j.microc.2014.06.005
Abstract: A novel system for Capillary Electrophoresis (CE) and Inductively Coupled Plasma (ICP) sample introduction that incorporates a dedicated Flow-Focusing® based nebulizer as aerosol generation unit is presented, aiming to provide high signal sensitivity and low detection limits for element speciation at short analysis times. To prove its viability, the system prototype constructed has been coupled to an inductively coupled plasma - optical emission spectrometer (ICP-OES) and an inductively coupled plasma - mass spectrometer (ICP-MS) for Cr(III) and Cr(VI) speciation. Separation - nebulization system and operation parameters (i.e., capillary length, nebulizer geometry, carrier flow, carrier ionic strength, separation potential and sample injection volume) have been considered and studied, and the analytical figures of merit obtained for model samples in ICP-MS are presented. The results obtained show that the developed instrumental system permits Cr speciation in less than two minutes with detection limits of 0.1, 0.2 and 0.03 μg/L for Cr(III), Cr(VI) and total Cr, respectively.
Sponsor: The authors are grateful to the Spanish Government (project CTQ2008-06730-C02-01), the Valencian Government (project ACOMP/2010/047), the NSF of Bulgaria (project DO 02-07 GAMMA) and the European Commission (EC FP7 24588 BioSupport project) for the financial support.
URI: http://hdl.handle.net/10045/38379
ISSN: 0026-265X (Print) | 1095-9149 (Online)
DOI: 10.1016/j.microc.2014.06.005
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.microc.2014.06.005
Appears in Collections:Research funded by the EU
INV - SP-BG - Artículos de Revistas

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