Synthesis and characterization of composite polymer, polyethylene glycol grafted flower-like cupric nano oxide for solid phase microextraction of ultra-trace levels of benzene, toluene, ethyl benzene and o-xylene in human hair and water samples

Sarafraz-Yazdi, A. and Zendegi-Shiraz, A. and Es'haghi, Z. and Hassanzadeh-Khayyat, M. (2015) Synthesis and characterization of composite polymer, polyethylene glycol grafted flower-like cupric nano oxide for solid phase microextraction of ultra-trace levels of benzene, toluene, ethyl benzene and o-xylene in human hair and water samples. Journal of Chromatography A, 1418. pp. 21-28.

[img] Text
1-s2.0-S0021967315013503-main.pdf

Download (1MB)
Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

In this research, poly (ethylene glycol)-poly (ethylene glycol) grafted flower-like cupric oxidenano particles (PEG-PEG-g-CuO NPs) as a novel fiber coating of solid-phase microextraction (SPME) were synthesized by using sol-gel technology. This fiber was successfully applied to extract and determine the ultra-trace levels of benzene, toluene, ethyl benzene and o-xylene in human hair using head space-solid-phase microextraction (HS-SPME) coupled to gas chromatography-flame ionization detector. Characterization and chemical composition of the nano particle was performed by Fourier transform infrared spectroscopy (FT-IR), energy dispersion spectroscopy (EDS) and back scatter analysis (BSA). These methods confirmed the successful fabrication of PEG-g-CuO NPs. The surface morphology of the fibers were inspected by scanning electron microscopy. The scanning electron microscopy (SEM) revealed many "crack-like" features and highly porous structure on the surface of fiber. The synthesized nanocomposites were used for preconcentration and extraction of benzene, toluene, ethyl benzene and o-xylene (BTEX). The effects of operating parameters such as: desorption temperature and time, extraction temperature, extraction time, stirring speed and salt effect were investigated and optimized. Under the optimal conditions, the method detection limits and the limits of quantification were between 0.00025-50.00000pgmL-1 and 0.00200-200.00000pgmL-1, respectively. Linearity was observed over a range 0.00200-200000.00000pgmL-1. The relative standard deviations for one fiber (repeatability; n=5) were obtained from 3.30 up to 5.01 and between fibers or batch to batch (n=3; reproducibility) in the range of 3.63-6.21. The developed method was successfully applied to simultaneous determination of BTEX in human hairs, tap water and distillate water. © 2015 Elsevier B.V.

Item Type: Article
Additional Information: Cited By :12 Export Date: 16 February 2020 CODEN: JCRAE Correspondence Address: Sarafraz-Yazdi, A.; Department of Chemistry, Faculty of Sciences, Ferdowsi University of MashhadIran; email: asyazdi@um.ac.ir
Uncontrolled Keywords: BTEX Flower-like cupric oxide nano particles Human hairs Sol-gel technology Solid-phase microextraction Water samples Benzene Copper oxides Ethylbenzene Ethylene glycol Fibers Fourier transform infrared spectroscopy Gas chromatography Grafting (chemical) Hydraulic structures Ionization of gases Nanoparticles Polyethylene glycols Polyethylene oxides Polyols Scanning electron microscopy Sol-gel process Sol-gels Synthesis (chemical) Toluene Xylene Human hair Extraction nanocomposite nanoparticle ortho xylene poly(ethylene glycol) poly(ethylene glycol) grafted flower like cupric oxide nanoparticle sodium chloride unclassified drug 2-xylene benzene derivative copper cupric oxide fresh water macrogol derivative water pollutant analytic method Article back scatter analysis chemical composition concentration (parameters) controlled study desorption temperature desorption time energy dispersion spectroscopy extraction temperature extraction time human human tissue infrared spectroscopy ionic strength limit of quantitation material coating physical parameters priority journal process development process optimization solid phase microextraction spectroscopy stirring speed water sampling analysis chemistry flame ionization detection hair procedures reproducibility synthesis Benzene Derivatives Chromatography, Gas Flame Ionization Humans Reproducibility of Results Spectroscopy, Fourier Transform Infrared Water Pollutants, Chemical Xylenes
Subjects: QU Biochemistry
Divisions: Mashhad University of Medical Sciences
Depositing User: mr lib5 lib5
Date Deposited: 04 Apr 2020 06:04
Last Modified: 04 Apr 2020 06:04
URI: http://eprints.mums.ac.ir/id/eprint/16592

Actions (login required)

View Item View Item