| Title: | Carbon nanocones/disks as new coating for solid-phase microextraction |
| Author(s): | Jimenez-Soto JM; Cardenas S; Valcarcel M; |
| Address: | "Department of Analytical Chemistry, Marie Curie Building(Annex), Campus de Rabanales, University of Cordoba, E-14071 Cordoba, Spain" |
| DOI: | 10.1016/j.chroma.2010.03.016 |
| ISSN/ISBN: | 1873-3778 (Electronic) 0021-9673 (Linking) |
| Abstract: | "In this article, the potential of carbon nanocones/disks as coating for solid-phase microextraction has been evaluated for the first time. The nanostructures were immobilized on a stainless steel needle by means of an organic binder. The fiber coating obtained was ca. 50 microm of thickness and 35 mm in length. The evaluation of the sorbent capacity was carried out through the determination of toluene, ethylbenzene, xylene isomers and styrene in water samples following the headspace sampling modality (15 min, 30 degrees C). The fiber was then transferred to a 10 mL vial which was sealed and heated at 110 degrees C for 15 min in the headspace module of the instrument to achieve the thermal desorption of the analytes. Then 2.5 mL of the headspace generated were injected in the gas chromatograph-mass spectrometer for analytes separation and quantitation. The detection and quantitation limits obtained for 10 mL of sample were 0.15 and 0.5 ng mL(-1) (0.6 and 2 ng mL(-1) for toluene). The optimized procedure was applied to the determination of the selected volatile compounds in waters collected from different locations. The recovery values obtained (average recovery ca. 92%) demonstrated the usefulness of the carbon nanocones/disks as sorbent material in solid-phase microextraction" |
| Keywords: | Adsorption Benzene Derivatives/chemistry Carbon/*chemistry Gas Chromatography-Mass Spectrometry Nanostructures/*chemistry Nanotechnology/methods Solid Phase Microextraction/*methods Toluene/chemistry Volatile Organic Compounds/chemistry Water/analysis Xyl; |
| Notes: | "MedlineJimenez-Soto, Juan Manuel Cardenas, Soledad Valcarcel, Miguel eng Research Support, Non-U.S. Gov't Netherlands 2010/04/07 J Chromatogr A. 2010 May 14; 1217(20):3341-7. doi: 10.1016/j.chroma.2010.03.016. Epub 2010 Mar 18" |
