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Reference type: Journal
Authors: Herrero Latorre C, Álvarez Méndez J, Barciela García J, García Martín S, Peña Crecente RM
Article Title: Carbon nanotubes as solid-phase extraction sorbents prior to atomic spectrometric determination of metal species: A review.
Publication date: 2012
Journal: Analytica Chimica Acta
Volume: 749
Page numbers: 16-35.
DOI: 10.1016/j.aca.2012.09.001
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0003267012012834

Abstract: New materials have significant impact on the development of new methods and instrumentation for chemical analysis. From the discovery of carbon nanotubes in 1991, single and multi-walled carbon nanotubes - due to their high adsorption and desorption capacities - have been employed as sorption substrates in solid-phase extraction for the preconcentration of metal species from diverse matrices. Looking for successive improvements in sensitivity and selectivity, in the past few years, carbon nanotubes have been utilized as sorbents for solid phase extraction in three different ways: like as-grown, oxidized and functionalized nanotubes. In the present paper, an overview of the recent trends in the use of carbon nanotubes for solid phase extraction of metal species in environmental, biological and food samples is presented. The determination procedures involved the adsorption of metals on the nanotube surface, their quantitative desorption and subsequent measurement by means of atomic spectrometric techniques such as flame atomic absorption spectrometry, electrothermal atomic absorption spectrometry or inductively coupled plasma atomic emission spectrometry/mass spectrometry, among others. Synthesis, purification and types of carbon nanotubes, as well as the diverse chemical and physical strategies for their functionalization are described. Based on 140 references, the performance and general properties of the applications of solid phase extraction based on carbon nanotubes for metal species atomic spectrometric determination are discussed
Template and target information: Review - carbon nanotubes in SPE of metals
Author keywords: Carbon nanotube, solid phase extraction, Analytical applications, Metal species, Atomic spectrometry


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