Part of #Dispersive solid phase nanoextraction coupled to GC/MS as a novel technique for extraction of BTEX from aqueous samples# :
Publishing year : 2014
Conference : Third National Conference on New Technologies in Chemistry and Chemical Engineering
Number of pages : 9
Abstract: Dispersive solid phase nanoextraction is presented as an alternative technique for the extraction andpreconcentration of benzene, toluene, ethylbenzene and xylene (BTEX) from aqueous samples. This novel approach – that we have named dispersive solid phase nanoextraction (DSPNE) – is based on the strong affinity between BTEX and gold nanoparticles (GNP). Total extraction experimental procedure takes less than 20 min. Final analysis of BTEX was performed using Gas chromatography-mass spectrometric (GC / MS) detection. Different parameters affecting the extraction efficiency, such as the sample volume, of the extractor solvent type and the amount and amount of adsorbent wereinvestigated and optimized for this method. The striking features of this technique are correlated to a small volume of water sample (200-1000 L) and an adsorbent (about 0.0005 g) and finally a small amount of organic solvent (less than 50 L) for analysis of BTEX. The results showed that dispersive fibers nanoextraction is a quick, relatively inexpensive and environmentally friendly alternative technique for extracting BTEX from water samples.