Synthesis of polyaniline-magnetite hollow nanocomposite as a novel fiber coating for the headspace solid-phase microextraction of benzene, toluene, ethylbenzene and xylenes from water samples

2015 ◽  
Vol 7 (12) ◽  
pp. 5318-5324 ◽  
Author(s):  
Reza Foroutani ◽  
Vahid Yousefi ◽  
Sahar Kangari
Keyword(s):  
Magnetite Nanoparticles ◽  
Water Samples ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Headspace Solid Phase Microextraction ◽  
Hollow Shell ◽  
Chemical Polymerization ◽  
Fiber Coating ◽  
Benzene Toluene

In this study, the polyaniline–magnetite (PA@Fe3O4) hollow nanocomposite was synthesized by a chemical polymerization technique, and magnetite nanoparticles were deposited on the polyaniline hollow shell.

Headspace solid-phase microextraction for the determination of benzene, toluene, ethylbenzene and xylenes in urine

1999 ◽  
Vol 723 (1-2) ◽  
pp. 105-115 ◽  
Author(s):  
Silvia Fustinoni ◽  
Rosario Giampiccolo ◽  
Salvatore Pulvirenti ◽  
Marina Buratti ◽  
Antonio Colombi
Keyword(s):  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Headspace Solid Phase Microextraction ◽  
Benzene Toluene

The headspace solid-phase microextraction of polycyclic aromatic hydrocarbons in environmental water samples using silica fiber modified by self assembled gold nanoparticles

2015 ◽  
Vol 7 (19) ◽  
pp. 8086-8093 ◽  
Author(s):  
Fahimeh Zare ◽  
Mehrorang Ghaedi ◽  
Ali Daneshfar
Keyword(s):  
Gold Nanoparticles ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Water Samples ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Environmental Water ◽  
Environmental Water Samples ◽  
Headspace Solid Phase Microextraction ◽  
Polycyclic Aromatic

The headspace solid phase microextraction method with modified silica fibers prepared based on self assembled gold nanoparticles and the sol–gel method is described for the determination of trace amounts of polycyclic aromatic hydrocarbons in environmental water samples..

scholarly journals Solid Phase Microextraction–Gas Chromatography For The Analysis Of Explosives In Post Blast Water Samples

2012 ◽  
Author(s):  
Umi Kalthom Ahmad ◽  
Kee Heng Kiu
Keyword(s):  
Gas Chromatography ◽  
Water Samples ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Fiber Types ◽  
Qualitative And Quantitative Analysis ◽  
Salting Out ◽  
Fiber Coating ◽  
Stirring Effect ◽  
Direct Immersion

Dalam kajian ini, teknik pengekstrakan mikro fasa pepejal (SPME) diikuti dengan kromatografi gas (GC) telah digunakan untuk menentukan sisa letupan. Beberapa parameter termasuk masa penjerapan, masa dan suhu nyahjerapan, jenis gentian SPME, kesan pengadukan dan kesan garam telah dioptimumkan untuk mendapat data yang tepat. Penambahan 10% w/v NaCl dalam medium akues dan penggunaan gentian Carboxen/Polidimetilsiloksana (CAR/PDMS) menghasilkan pengekstrakan yang paling cekap. SPME/GC–ECD yang telah dioptimumkan digunakan untuk menganalisis sisa letupan 2,6–dinitrotoluena (2,6–DNT), trinitrotoluena (TNT) dan pentaeritritol tetranitrat (PETN) berjaya dikesan daripada sampel air. SPME/GC–ECD secara rendaman langsung didapati kaedah yang menarik digunakan untuk menganalisis bahan letupan dalam sampel air pasca letupan secara kualitatif dan kuantitatif. Kata kunci: Bahan letupan, SPME rendaman langsung, GC–ECD, sampel air pasca letupan In this study, a solid–phase microextraction (SPME) technique followed by gas chromatography (GC) was used to determine explosive residues. Several parameters including adsorption time, desorption time and temperature, SPME fiber types, stirring effect and salting out effect were optimized to obtain reproducible data with good accuracy. Addition of 10% w/v of NaCl in the aqueous medium and the use of a Carboxen/Polydimethylsiloxane (CAR/PDMS) fiber coating led to optimal extraction efficiencies. The optimized SPME/GC–ECD method was applied to the trace analysis of explosive residues in water samples. 2,6–dinitrotoluene (2,6–DNT), trinitrotoluene (TNT) and pentaerythritol tetranitrate (PETN) were successfully detected from water samples. Direct Immersion SPME/GC–ECD was found to be an attractive technique for qualitative and quantitative analysis of explosives in post blast water samples. Key words: Explosives, direct immersion SPME, GC–ECD, post blast water samples

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