NDLI: Modified SBA-15 mesoporous silica as a novel fiber coating in solid-phase microextraction and determination of BTEX compounds in water samples using gas chromatography-flame ionization detection

Content Provider	Royal Society of Chemistry (RSC)
Author	Irannejad, Sanaz Anbia, Mansoor
Copyright Year	2013
Abstract	Nanoporous silica (SBA-15) was prepared, functionalized with 3-(2-aminoethylamino) propyltrimethoxysilane and employed as a novel solid-phase microextraction (SPME) fiber. The prepared nanoporous silica was immobilized onto a copper wire for fabrication of the SPME fiber. The efficiency and reliability of the prepared device was investigated for the extraction of some volatile organic compound such as benzene, toluene, ethylbenzene and xylenes from the headspace of sample solutions. Five experimental parameters consisting of adsorption temperature, adsorption time, stirring rate, salt concentration and headspace volume were evaluated and optimized by using a Taguchi's L16 (45) orthogonal array experimental design. Under the optimized conditions for all BTEX compounds, the repeatability for one fiber (n = 4), expressed as relative standard deviation was between 5.2 and 9.8% and the reproducibility for four fibers was between 6.83% and 10.9%, the linearity was from 1.5 to 950 μg L−1 and the limit of detection was between 0.15 and 0.42 μg L−1. The recovery values were 83.7 to 108.2% for water samples. The proposed method was applied in the determination of the trace level compounds in natural water samples.
Starting Page	1596
Ending Page	1603
Page Count	8
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	5
Issue Number	6
Journal	Analytical Methods
DOI	10.1039/c3ay26379g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Ethylbenzene Adsorption Benzene Toluene Solid-phase microextraction Volatile organic compound Copper Orthogonality Coefficient of variation Silicon dioxide BTX (chemistry)
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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