In this work, nanometer TiO2 modified by cetyl trimethyl ammonium bromide (CTAB) was used as adsorbent for solid-phase extraction (SPE) of Parathion in environmental water samples. Adsorbed Parathion was then desorbed with different eluents and determined by gas chromatography (GC)/flame ionization detection. Greater selectivity, resolution, and sensitivity have been seen by GC compared with other methods. Parameters that might influence the extraction efficiency, such as the eluent type and its volume, adsorbent amount, sample volume, sample pH and sample flow rate, were optimized. Under the optimized extraction conditions with toluene as the eluent, the experimental results showed the excellent linearity of Parathion (R2 > 0.99) over the range of 0.01–0.8 μg/mL, and the relative standard deviation was 6.3% (n = 5). The detection limit of the proposed method could reach 0.024 ng/mL based on the ratio of chromatographic signal to base line noise (S/N = 3). Recovery of 93% was achieved with spiked water samples. The method was successfully applied to the analysis of surface water samples.
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Research Article|
August 23 2016
Using nanometer TiO2 modified with cetyl trimethyl ammonium bromide for separation and preconcentration of Parathion in water sample Available to Purchase
Haghighe Fathi;
Haghighe Fathi
1Phase Separation & FIA Lab, Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan 45195-313, Iran
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Robab Soltani-Jigheh;
2Research Laboratory of Environment Protection Technology, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
E-mail: [email protected]
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Saeed Hemmati
Saeed Hemmati
3Research Laboratory of Water Refinery, Department of Environmental Health Engineering, Tabriz University of Medical Sciences, Tabriz, Iran
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Water Supply (2017) 17 (2): 362–371.
Article history
Received:
August 12 2015
Accepted:
August 11 2016
Citation
Haghighe Fathi, Robab Soltani-Jigheh, Saeed Hemmati; Using nanometer TiO2 modified with cetyl trimethyl ammonium bromide for separation and preconcentration of Parathion in water sample. Water Supply 1 March 2017; 17 (2): 362–371. doi: https://doi.org/10.2166/ws.2016.140
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