Carbon Nanotubes as Solid-Phase Extraction Sorbents Prior to Atomic Spectrometric Determination of Metal Species: Determination of Lead in Urine | Zendy

Carlos Herrero | Zendy; Jenifer Álvarez-Méndez | Zendy; Carlha Gutiérrez-Lovera | Zendy; Julia Barciela García | Zendy; Rosa M Peña | Zendy; S. Garcı́a Martı́n | Zendy

Open Access

Carbon Nanotubes as Solid-Phase Extraction Sorbents Prior to Atomic Spectrometric Determination of Metal Species: Determination of Lead in Urine

Author(s) -

Carlos Herrero,

Jenifer Álvarez-Méndez,

Carlha Gutiérrez-Lovera,

Julia Barciela García,

Rosa M Peña,

S. Garcı́a Martı́n

Publication year - 2014

Publication title -

proceedings of the 14th international electronic conference on synthetic organic chemistry

Language(s) - English

Resource type - Conference proceedings

DOI - 10.3390/ecsoc-18-d012

Subject(s) - sorbent , carbon nanotube , solid phase extraction , sorption , desorption , atomic absorption spectroscopy , extraction (chemistry) , adsorption , materials science , matrix (chemical analysis) , carbon fibers , metal , chromatography , chemistry , nanotechnology , organic chemistry , metallurgy , composite material , physics , quantum mechanics , composite number

New materials have significant impact on development of new methods and instrumentation for chemical analysis. From the discovery of carbon nanotubes in 1991, single and multi-walled carbon nanotubes (SWCNTs and MWCNTs) -due to their high adsorption and desorption capacities- have been employed as sorption substrates in solid-phase extraction for the preconcentration of heavy metals from diverse matrices. In the present work, a new method for the Pb determination by electrothermal atomic absorption spectrometry (ETAAS) in urine at low levels has been developed. Lead was separated from the undesirable urine matrix by means of a solid phase extraction (SPE) procedure using oxidized multiwalled carbon nanotubes as a sorbent material.

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