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Synthesis and application of a novel solid-phase microextraction adsorbent: hollow fiber supported carbon nanotube reinforced sol-gel for determination of phenobarbital.
Anal Chim Acta. 2011 Mar 09; 689(1):122-8.AC

Abstract

A novel solid-phase microextraction technique using a hollow fiber-supported sol-gel combined with multi-walled carbon nanotubes was employed in the determination of phenobarbital in wastewater. In this new technique, a silica-based, organic-inorganic polymer containing functionalized multi-walled carbon nanotubes (MWCNTs) was prepared with sol-gel technology via the reaction of tetraethylorthosilicate (TEOS) with an acidic catalyst (HCl). This sol was injected into a polypropylene hollow fiber segment for in situ gelation. This device operated in direct immersion sampling mode. The experimental setup is simple and affordable, and the device is disposable, so there is no risk of cross-contamination or carry-over. Parameters affecting extraction such as pH of the aqueous solution, ageing and extraction times, aqueous sample volume, agitation speed and carbon nanotube amount were optimized. Linearity was observed over a range of 0.50-5000 ng mL(-1), with an estimation coefficient (r(2)) higher than 0.982. The limit of detection (LOD) was 0.32 ng mL(-1) (n=5), and repeatability (RSD%=2.9) was from the average of three levels of analyte concentrations (1, 1000 and 4500 ng mL(-1)) with three replicates for each within a single day. Finally, a pre-concentration factor of 2100 was obtained for phenobarbital.

Authors+Show Affiliations

Department of Chemistry, Faculty of Sciences, Payame Noor University, Mashhad, Iran. z_eshaghi@pnu.ac.irNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21338767

Citation

Es'haghi, Zarrin, et al. "Synthesis and Application of a Novel Solid-phase Microextraction Adsorbent: Hollow Fiber Supported Carbon Nanotube Reinforced Sol-gel for Determination of Phenobarbital." Analytica Chimica Acta, vol. 689, no. 1, 2011, pp. 122-8.
Es'haghi Z, Rezaeifar Z, Rounaghi GH, et al. Synthesis and application of a novel solid-phase microextraction adsorbent: hollow fiber supported carbon nanotube reinforced sol-gel for determination of phenobarbital. Anal Chim Acta. 2011;689(1):122-8.
Es'haghi, Z., Rezaeifar, Z., Rounaghi, G. H., Nezhadi, Z. A., & Golsefidi, M. A. (2011). Synthesis and application of a novel solid-phase microextraction adsorbent: hollow fiber supported carbon nanotube reinforced sol-gel for determination of phenobarbital. Analytica Chimica Acta, 689(1), 122-8. https://doi.org/10.1016/j.aca.2011.01.019
Es'haghi Z, et al. Synthesis and Application of a Novel Solid-phase Microextraction Adsorbent: Hollow Fiber Supported Carbon Nanotube Reinforced Sol-gel for Determination of Phenobarbital. Anal Chim Acta. 2011 Mar 9;689(1):122-8. PubMed PMID: 21338767.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Synthesis and application of a novel solid-phase microextraction adsorbent: hollow fiber supported carbon nanotube reinforced sol-gel for determination of phenobarbital. AU - Es'haghi,Zarrin, AU - Rezaeifar,Zohreh, AU - Rounaghi,Gholam-Hossein, AU - Nezhadi,Zahra Alian, AU - Golsefidi,Mazyar Ahmadi, Y1 - 2011/01/18/ PY - 2010/11/18/received PY - 2011/01/07/revised PY - 2011/01/10/accepted PY - 2011/2/23/entrez PY - 2011/2/23/pubmed PY - 2011/8/24/medline SP - 122 EP - 8 JF - Analytica chimica acta JO - Anal. Chim. Acta VL - 689 IS - 1 N2 - A novel solid-phase microextraction technique using a hollow fiber-supported sol-gel combined with multi-walled carbon nanotubes was employed in the determination of phenobarbital in wastewater. In this new technique, a silica-based, organic-inorganic polymer containing functionalized multi-walled carbon nanotubes (MWCNTs) was prepared with sol-gel technology via the reaction of tetraethylorthosilicate (TEOS) with an acidic catalyst (HCl). This sol was injected into a polypropylene hollow fiber segment for in situ gelation. This device operated in direct immersion sampling mode. The experimental setup is simple and affordable, and the device is disposable, so there is no risk of cross-contamination or carry-over. Parameters affecting extraction such as pH of the aqueous solution, ageing and extraction times, aqueous sample volume, agitation speed and carbon nanotube amount were optimized. Linearity was observed over a range of 0.50-5000 ng mL(-1), with an estimation coefficient (r(2)) higher than 0.982. The limit of detection (LOD) was 0.32 ng mL(-1) (n=5), and repeatability (RSD%=2.9) was from the average of three levels of analyte concentrations (1, 1000 and 4500 ng mL(-1)) with three replicates for each within a single day. Finally, a pre-concentration factor of 2100 was obtained for phenobarbital. SN - 1873-4324 UR - https://www.unboundmedicine.com/medline/citation/21338767/Synthesis_and_application_of_a_novel_solid_phase_microextraction_adsorbent:_hollow_fiber_supported_carbon_nanotube_reinforced_sol_gel_for_determination_of_phenobarbital_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0003-2670(11)00081-X DB - PRIME DP - Unbound Medicine ER -