PMID- 29884926
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20190124
LR  - 20190124
IS  - 1436-5073 (Electronic)
IS  - 0026-3672 (Linking)
VI  - 185
IP  - 7
DP  - 2018 Jun 8
TI  - Three-dimensional nanofiber scaffolds are superior to two-dimensional mats in 
      micro-oriented extraction of chlorobenzenes.
PG  - 322
LID - 10.1007/s00604-018-2858-7 [doi]
AB  - Three-dimensional (3D) polyamide scaffolds were fabricated by applying a solvent 
      bath as the collecting element. Electrospun nanofibers were immersed into the 
      solvent bath to give a material with a laminated 3D texture. In parallel, 2D 
      nanofibers were synthesized and utilized as microextractive phases in a needle 
      trap device to compare the capabilities of 2D and 3D materials in terms of 
      headspace extraction of various chlorobenzenes (chlorobenzene, 
      1,2-dichlorobenzene, 1,4-dichlorobenzene, 1,2,4-trichlorobenzene and 
      1,2,3,4-tetrachlorobenzene). The results demonstrate the superiority of 3D 
      nanofibrous scaffolds over 2D mats. The porosity, morphology, and thermal 
      stability of the 3D scaffolds were characterized using FT-IR, scanning electron 
      microscopy, confocal laser scanning microscopy and thermogravimetric analysis. 
      The CLSM images were reconstructed and analyzed by Image J software, and 
      eventually the enhancement of porosity using 3D scaffolds was confirmed. The type 
      of solvent bath, polyamide solution concentration and other parameters were 
      optimized. Following thermal desorption of the chlorobenzenes, they were 
      quantified by GC-MS. Under optimum conditions, the calibration plots cover the 
      0.004-1.0 pg muL(-1) concentration range and the limits of detection are in the 
      range from 0.8-3 pg mL(-1). The relative standard deviations (RSDs) are between 3 
      and 8% and 3-10% (n = 3) at spiking levels of 200 and 1000 ng L(-1), 
      respectively. The RSDs for the needle-to-needle repeatability are <15% (for 
      n = 3). This needle trap microextraction method was applied to the analysis of 
      river water, sea water, and of inlet water of a water treatment plant. Graphical 
      abstract Schematic diagram symbolizing the extractive effectiveness of 
      sponge-like 3D nanofibrous scaffolds with respect to smooth 2D electrospun 
      nanofibers. Under the same experimental conditions, higher porosity of 3D 
      scaffolds is amazingly contributed to the more accessible adsorptive sites which 
      in turn makes them drastic and innovative candidate for micro-oriented extraction 
      purposes.
FAU - Bagheri, Habib
AU  - Bagheri H
AD  - Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif 
      University of Technology, P.O. Box 11365-9516, Tehran, Iran. bagheri@sharif.edu.
FAU - Manshaei, Faranak
AU  - Manshaei F
AD  - Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif 
      University of Technology, P.O. Box 11365-9516, Tehran, Iran.
FAU - Rezvani, Omid
AU  - Rezvani O
AD  - Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif 
      University of Technology, P.O. Box 11365-9516, Tehran, Iran.
LA  - eng
PT  - Journal Article
DEP - 20180608
PL  - Austria
TA  - Mikrochim Acta
JT  - Mikrochimica acta
JID - 7808782
OTO - NOTNLM
OT  - Contaminants
OT  - Needle trap microextraction
OT  - Porous structures
OT  - Sample preparation
OT  - Sponge structures
OT  - Wet electrospinning
EDAT- 2018/06/10 06:00
MHDA- 2018/06/10 06:01
CRDT- 2018/06/10 06:00
PHST- 2018/03/14 00:00 [received]
PHST- 2018/05/28 00:00 [accepted]
PHST- 2018/06/10 06:00 [entrez]
PHST- 2018/06/10 06:00 [pubmed]
PHST- 2018/06/10 06:01 [medline]
AID - 10.1007/s00604-018-2858-7 [pii]
AID - 10.1007/s00604-018-2858-7 [doi]
PST - epublish
SO  - Mikrochim Acta. 2018 Jun 8;185(7):322. doi: 10.1007/s00604-018-2858-7.