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A flow injection μ-solid phase extraction system based on electrospun polyaniline nanocomposite

Bagheri, H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.chroma.2016.01.012
  3. Publisher: Elsevier
  4. Abstract:
  5. In this study, a fast and sensitive flow injection μ-solid phase extraction (FI-μ-SPE) technique based on an electrospun polyaniline (PANI) nanocomposite in conjunction with gas chromatography-mass spectrometry (GC-MS) was developed. The PANI-based nanocomposite was synthesized by electrospinning of a solution containing polyvinyl alcohol (PVA)/PANI. The majority of PVA template was subsequently removed from the whole PVA/PANI nanofibers blend by exposing the electrospun nanocomposite to hot water. The homogeneity, porosity and characterization of the electrospun nanofibers were investigated by the scanning electron microscopy (SEM) and Fourier transform infrared (FT-IR) spectroscopy. Due to the polar-oriented nature of the prepared nanofibrous nitrogen-containing sorbent, its capability was examined by FI-μ-SPE of some selected triazines, as model compounds, from aquatic media. After optimizing the extraction conditions, the intraday relative standard deviation values for a double distilled water spiked with the selected triazines were in range of 8.9-9.5% (n = 3) while the limits of detection were between 0.03-0.09 ng mL-1. The linearity of the method was in the concentration range of 0.1-500 ng mL-1. The proficiency of the developed method was validated by analyzing paddy, well and tap water samples and the relative recovery values were found to be in the range of 83-95% under the optimized conditions
  6. Keywords:
  7. Flow injection μ-solid phase extraction ; Chromatography ; Column chromatography ; Gas chromatography ; Mass spectrometry ; Nanocomposites ; Polyaniline ; Scanning electron microscopy ; Spectrometry ; Spinning (fibers) ; Fourier transform infrared (FTIR) spectroscopy ; Gas chromatography-mass spectrometries (GC-MS) ; Poly (vinyl alcohol) (PVA) ; Polyaniline nanocomposites ; Relative standard deviations ; Triazines ; Extraction ; electrospun polyaniline nanocomposite ; Hot water ; Nitrogen ; Polyvinyl alcohol ; Sorbent ; Unclassified drug ; Aniline derivative ; Nanofiber ; Triazine derivative ; Article ; Chemical analysis ; Concentration (parameters) ; Controlled study ; Electrospinning ; Infrared spectroscopy ; Limit of detection ; Mass fragmentography ; Porosity ; Priority journal ; Water sampling ; Analysis ; Chemistry ; Procedures ; Water pollutant ; Aniline Compounds ; Fresh Water ; Microscopy, Electron, Scanning ; Solid Phase Extraction ; Spectroscopy, Fourier Transform Infrared
  8. Source: Journal of Chromatography A ; Volume 1433 , 2016 , Pages 34-40 ; 00219673 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0021967316000340