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Application of carbon nanotubes modified with a Keggin polyoxometalate as a new sorbent for the hollow-fiber micro-solid-phase extraction of trace naproxen in hair samples with fluorescence spectrophotometry using factorial experimental design.
J Sep Sci. 2015 Jul; 38(13):2348-56.JS

Abstract

A sensitive technique to determinate naproxen in hair samples was developed using hollow-fiber micro-solid-phase combined with fluorescence spectrophotometry. The incorporation of multi-walled carbon nanotubes modified with a Keggin polyoxometalate into a silica matrix prepared by the sol-gel method was reported. In this research, the Keggin carbon nanotubes /silica composite was used in the pores and lumen of a hollow fiber as the hollow-fiber micro-solid-phase extraction device. The device was used for the microextraction of the analyte from hair and water samples under the optimized conditions. An orthogonal array experimental design with an OA24 (4(6)) matrix was employed to optimize the conditions. The effect of six factors influencing the extraction efficiency was investigated: pH, salt, volume of donor and desorption phase, extraction and desorption time. The effect of each factor was estimated using individual contributions as response functions in the screening process. Analysis of variance was employed for estimating the main significant factors and their contributions in the extraction. Calibration curve plot displayed linearity over a range of 0.2-10 ng/mL with detection limits of 0.072 and 0.08 ng/mL for hair and aqueous samples, respectively. The relative recoveries in the hair and aqueous matrices ranged from 103-95%. The relative standard deviation for fiber-to-fiber repeatability was 3.9%.

Authors+Show Affiliations

Department of Chemistry, Faculty of Sciences, Islamic Azad University, Mashhad Branch, Iran.Department of Chemistry, Faculty of Sciences, Islamic Azad University, Mashhad Branch, Iran.Department of Chemistry, Payame Noor University, Iran.Department of Chemistry, Faculty of Sciences, Islamic Azad University, Mashhad Branch, Iran.

Pub Type(s)

Journal Article
Validation Study

Language

eng

PubMed ID

25931376

Citation

Naddaf, Ezzat, et al. "Application of Carbon Nanotubes Modified With a Keggin Polyoxometalate as a New Sorbent for the Hollow-fiber Micro-solid-phase Extraction of Trace Naproxen in Hair Samples With Fluorescence Spectrophotometry Using Factorial Experimental Design." Journal of Separation Science, vol. 38, no. 13, 2015, pp. 2348-56.
Naddaf E, Ebrahimi M, Es'haghi Z, et al. Application of carbon nanotubes modified with a Keggin polyoxometalate as a new sorbent for the hollow-fiber micro-solid-phase extraction of trace naproxen in hair samples with fluorescence spectrophotometry using factorial experimental design. J Sep Sci. 2015;38(13):2348-56.
Naddaf, E., Ebrahimi, M., Es'haghi, Z., & Bamoharram, F. F. (2015). Application of carbon nanotubes modified with a Keggin polyoxometalate as a new sorbent for the hollow-fiber micro-solid-phase extraction of trace naproxen in hair samples with fluorescence spectrophotometry using factorial experimental design. Journal of Separation Science, 38(13), 2348-56. https://doi.org/10.1002/jssc.201401459
Naddaf E, et al. Application of Carbon Nanotubes Modified With a Keggin Polyoxometalate as a New Sorbent for the Hollow-fiber Micro-solid-phase Extraction of Trace Naproxen in Hair Samples With Fluorescence Spectrophotometry Using Factorial Experimental Design. J Sep Sci. 2015;38(13):2348-56. PubMed PMID: 25931376.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Application of carbon nanotubes modified with a Keggin polyoxometalate as a new sorbent for the hollow-fiber micro-solid-phase extraction of trace naproxen in hair samples with fluorescence spectrophotometry using factorial experimental design. AU - Naddaf,Ezzat, AU - Ebrahimi,Mahmoud, AU - Es'haghi,Zarrin, AU - Bamoharram,Fatemeh Farrash, Y1 - 2015/06/18/ PY - 2014/12/21/received PY - 2015/04/04/revised PY - 2015/04/05/accepted PY - 2015/5/2/entrez PY - 2015/5/2/pubmed PY - 2016/3/31/medline KW - Experimental design KW - Hollow-fiber micro-solid-phase extraction KW - Keggin polyoxometalates KW - Naproxen KW - Sol-gel processes SP - 2348 EP - 56 JF - Journal of separation science JO - J Sep Sci VL - 38 IS - 13 N2 - A sensitive technique to determinate naproxen in hair samples was developed using hollow-fiber micro-solid-phase combined with fluorescence spectrophotometry. The incorporation of multi-walled carbon nanotubes modified with a Keggin polyoxometalate into a silica matrix prepared by the sol-gel method was reported. In this research, the Keggin carbon nanotubes /silica composite was used in the pores and lumen of a hollow fiber as the hollow-fiber micro-solid-phase extraction device. The device was used for the microextraction of the analyte from hair and water samples under the optimized conditions. An orthogonal array experimental design with an OA24 (4(6)) matrix was employed to optimize the conditions. The effect of six factors influencing the extraction efficiency was investigated: pH, salt, volume of donor and desorption phase, extraction and desorption time. The effect of each factor was estimated using individual contributions as response functions in the screening process. Analysis of variance was employed for estimating the main significant factors and their contributions in the extraction. Calibration curve plot displayed linearity over a range of 0.2-10 ng/mL with detection limits of 0.072 and 0.08 ng/mL for hair and aqueous samples, respectively. The relative recoveries in the hair and aqueous matrices ranged from 103-95%. The relative standard deviation for fiber-to-fiber repeatability was 3.9%. SN - 1615-9314 UR - https://www.unboundmedicine.com/medline/citation/25931376/Application_of_carbon_nanotubes_modified_with_a_Keggin_polyoxometalate_as_a_new_sorbent_for_the_hollow_fiber_micro_solid_phase_extraction_of_trace_naproxen_in_hair_samples_with_fluorescence_spectrophotometry_using_factorial_experimental_design_ L2 - https://doi.org/10.1002/jssc.201401459 DB - PRIME DP - Unbound Medicine ER -