Premium
Highly porous silica‐polyaniline nanocomposite as a novel solid‐phase microextraction fiber coating
Author(s) -
Gholivand Mohammad B.,
Abolghasemi Mir M.,
Fattahpour Peyman
Publication year - 2012
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201100694
Subject(s) - solid phase microextraction , polyaniline , extraction (chemistry) , fiber , desorption , materials science , detection limit , nanocomposite , scanning electron microscope , chromatography , polymerization , mass spectrometry , adsorption , gas chromatography–mass spectrometry , chemistry , polymer , nanotechnology , organic chemistry , composite material
A highly porous fiber‐coated SBA‐15/polyaniline material was prepared for solid‐phase microextraction (SPME). The SBA‐15/polyaniline nanocomposite was synthesized via chemical polymerization. The prepared SBA‐15/polyaniline particles were analyzed by scanning electron microscopy analysis. The prepared nanomaterial was immobilized onto a stainless steel wire for fabrication of the SPME fiber. The fiber was evaluated for the extraction of some polycyclic aromatic hydrocarbons (PAHs) from aqueous sample solutions in combination with gas chromatography‐mass spectrometry (GC‐MS). In optimum conditions (extraction temperature 60°C, extraction time 40 min, ionic strength 20%, stirring rate: 500 rpm, desorption temperature 260°C, desorption time 2 min), the repeatability for one fiber ( n =3), expressed as relative standard deviation (RSD%), was between 5.3 and 8.6% for the test compounds. For deionized water, spiked with selected PAHs, the detection limits for the studied compounds were between 2 and 20 pg/mL.