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Ionic liquid mediated sol-gel sorbents for hollow fiber solid-phase microextraction of pesticide residues in water and hair samples.
J Chromatogr A. 2011 Nov 18; 1218(46):8313-21.JC

Abstract

An ionic liquid mediated sol-gel sorbents for hollow fiber solid-phase microextraction (HF-SPME) was developed for extraction of the pesticides: diazinon, fenitrothion, malathion, fenvalerate, phosalone and tridemorph from human hair and water samples. The analytes were subsequently analyzed with high performance liquid chromatography and diode array detection (HPLC-DAD). Preliminary experiments were carried out in order to study experimental conditions for pesticides' extraction from spiked hair and water samples with HF-SPME using hollow fiber-supported ionic liquid mediated sol-gel sorbent. The sol-gel nanocomposites were reinforced with nanoparticles such as carboxylic functionalized multi-walled carbon nanotubes (COOH-MWCNTs), amino functionalized multi-walled carbon nanotubes (NH(2)-MWCNTs), nano SiO(2), nano TiO(2) and nano MgO comparatively to promote extraction efficiency. In this device, the innovative solid sorbents were developed by the sol-gel method via the reaction of tetraethylorthosilicate (TEOS) with 2-amino-2-hydroxymethyl-propane-1,3-diol (TRIS). In the basic condition (pH 10-11), the gel growth process in the presence of ionic liquid and nanoparticles was initiated. Then, the sol was injected into a polypropylene hollow fiber segment for in situ gelation process. Parameters affecting the efficiency of HF-SPME were thoroughly investigated. Linearity was observed over a range of 0.01-25,000 ng/mL with detection limits between 0.004 and 0.095 ng/mL for the pesticides in the aqueous matrices and 0.003-0.080 ng/mL in the hair matrices. The relative recoveries in the real samples ranged from 82.0% to 94.0% for the pesticides store seller's hair and the work researchers' hair. Results are showing the great possibilities of HF-SPME-HPLC-PDA for analysis of pesticides in biological and environmental samples.

Authors+Show Affiliations

Department of Chemistry, Faculty of Sciences, Birjand University, Birjand, Iran.No 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

21993517

Citation

Ebrahimi, Mahmoud, et al. "Ionic Liquid Mediated Sol-gel Sorbents for Hollow Fiber Solid-phase Microextraction of Pesticide Residues in Water and Hair Samples." Journal of Chromatography. A, vol. 1218, no. 46, 2011, pp. 8313-21.
Ebrahimi M, Es'haghi Z, Samadi F, et al. Ionic liquid mediated sol-gel sorbents for hollow fiber solid-phase microextraction of pesticide residues in water and hair samples. J Chromatogr A. 2011;1218(46):8313-21.
Ebrahimi, M., Es'haghi, Z., Samadi, F., & Hosseini, M. S. (2011). Ionic liquid mediated sol-gel sorbents for hollow fiber solid-phase microextraction of pesticide residues in water and hair samples. Journal of Chromatography. A, 1218(46), 8313-21. https://doi.org/10.1016/j.chroma.2011.09.058
Ebrahimi M, et al. Ionic Liquid Mediated Sol-gel Sorbents for Hollow Fiber Solid-phase Microextraction of Pesticide Residues in Water and Hair Samples. J Chromatogr A. 2011 Nov 18;1218(46):8313-21. PubMed PMID: 21993517.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ionic liquid mediated sol-gel sorbents for hollow fiber solid-phase microextraction of pesticide residues in water and hair samples. AU - Ebrahimi,Mahmoud, AU - Es'haghi,Zarrin, AU - Samadi,Fatemeh, AU - Hosseini,Mohammad-Saeid, Y1 - 2011/09/29/ PY - 2011/08/15/received PY - 2011/09/20/revised PY - 2011/09/22/accepted PY - 2011/10/14/entrez PY - 2011/10/14/pubmed PY - 2012/1/18/medline SP - 8313 EP - 21 JF - Journal of chromatography. A JO - J Chromatogr A VL - 1218 IS - 46 N2 - An ionic liquid mediated sol-gel sorbents for hollow fiber solid-phase microextraction (HF-SPME) was developed for extraction of the pesticides: diazinon, fenitrothion, malathion, fenvalerate, phosalone and tridemorph from human hair and water samples. The analytes were subsequently analyzed with high performance liquid chromatography and diode array detection (HPLC-DAD). Preliminary experiments were carried out in order to study experimental conditions for pesticides' extraction from spiked hair and water samples with HF-SPME using hollow fiber-supported ionic liquid mediated sol-gel sorbent. The sol-gel nanocomposites were reinforced with nanoparticles such as carboxylic functionalized multi-walled carbon nanotubes (COOH-MWCNTs), amino functionalized multi-walled carbon nanotubes (NH(2)-MWCNTs), nano SiO(2), nano TiO(2) and nano MgO comparatively to promote extraction efficiency. In this device, the innovative solid sorbents were developed by the sol-gel method via the reaction of tetraethylorthosilicate (TEOS) with 2-amino-2-hydroxymethyl-propane-1,3-diol (TRIS). In the basic condition (pH 10-11), the gel growth process in the presence of ionic liquid and nanoparticles was initiated. Then, the sol was injected into a polypropylene hollow fiber segment for in situ gelation process. Parameters affecting the efficiency of HF-SPME were thoroughly investigated. Linearity was observed over a range of 0.01-25,000 ng/mL with detection limits between 0.004 and 0.095 ng/mL for the pesticides in the aqueous matrices and 0.003-0.080 ng/mL in the hair matrices. The relative recoveries in the real samples ranged from 82.0% to 94.0% for the pesticides store seller's hair and the work researchers' hair. Results are showing the great possibilities of HF-SPME-HPLC-PDA for analysis of pesticides in biological and environmental samples. SN - 1873-3778 UR - https://www.unboundmedicine.com/medline/citation/21993517/Ionic_liquid_mediated_sol_gel_sorbents_for_hollow_fiber_solid_phase_microextraction_of_pesticide_residues_in_water_and_hair_samples_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9673(11)01434-8 DB - PRIME DP - Unbound Medicine ER -