Analytical Methods, ( ISI ), Volume (4), No (10), Year (2012-10) , Pages (3701-3707)

Title : ( Headspace solid-phase microextraction using poly(ethylene glycol) grafted multi-walled carbon nanotube fibers for the determination of methyl tert-butyl ether in water samples )

Authors: Ali Sarafraz Yazdi , Amirhassan Amiri , Glamhossein Ronagi , Hossein Eshtiagh Hosseini ,

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A simple, sensitive, and accurate method for the determination of methyl tert-butyl ether (MTBE) in water samples has been developed based on headspace solid-phase microextraction (HS-SPME) followed by gas chromatography-flame ionization detection (GC-FID). A sol–gel based coating fiber using poly(ethylene glycol) (PEG) grafted onto multi-walled carbon nanotubes (PEG-g-MWCNTs) as the extraction phase was prepared and used for the extraction of MTBE. The relative standard deviations (RSDs) for one fiber (repeatability) (n ¼ 6) and between fibers or batch to batch (reproducibility) (n ¼ 3) were obtained. The repeatability was assessed at low (0.1 ng mL 1) and high (100 ng mL 1) concentrations and the RSDs obtained were 5.3 and 4.1%, respectively. The reproducibility obtained for a concentration of 0.1 ng mL 1 was 6.5%. The calibration curve of MTBE was linear in the range from 0.07 to 500 ng mL 1. The limits of detection (S/N ¼ 3) of 0.01 ng mL 1 and the limits of quantification (S/N ¼ 10) of 0.07 ng mL 1 were obtained. The developed method was applied successfully to determine trace level of MTBE in real water samples. The relative recoveries for the spiked samples with 5 ng mL 1 of MTBE were ranged from 91 to 112% and the relative standard deviations were less than 7.8%. Introduction

Keywords

, SPME, Sol-Gel,
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@article{paperid:1030737,
author = {Sarafraz Yazdi, Ali and Amirhassan Amiri and Ronagi, Glamhossein and Eshtiagh Hosseini, Hossein},
title = {Headspace solid-phase microextraction using poly(ethylene glycol) grafted multi-walled carbon nanotube fibers for the determination of methyl tert-butyl ether in water samples},
journal = {Analytical Methods},
year = {2012},
volume = {4},
number = {10},
month = {October},
issn = {1759-9660},
pages = {3701--3707},
numpages = {6},
keywords = {SPME; Sol-Gel; GC},
}

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%0 Journal Article
%T Headspace solid-phase microextraction using poly(ethylene glycol) grafted multi-walled carbon nanotube fibers for the determination of methyl tert-butyl ether in water samples
%A Sarafraz Yazdi, Ali
%A Amirhassan Amiri
%A Ronagi, Glamhossein
%A Eshtiagh Hosseini, Hossein
%J Analytical Methods
%@ 1759-9660
%D 2012

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