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Preparation of Al 2 O 3 /TiO 2 composite sol–gel fiber for headspace solid‐phase microextraction of chlorinated organic solvents from urine
Author(s) -
Farhadi Khalil,
Maleki Ramin,
Tahmasebi Raheleh
Publication year - 2011
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.201000924
Subject(s) - solid phase microextraction , fiber , chromatography , extraction (chemistry) , chloroform , sample preparation , ionic liquid , gas chromatography , analytical chemistry (journal) , analyte , chemistry , materials science , gas chromatography–mass spectrometry , mass spectrometry , organic chemistry , catalysis
A new solid‐phase microextraction fiber based on alumina/titania sol–gel‐coated on copper wire for headspace sampling of chlorinated organic solvents (chloroform, carbon tetrachloride, trichloroethene, and tetrachloroethene) from urine samples is introduced. The influences of fiber coating composition and microextraction conditions (extraction temperature, extraction time, and ionic strength of the sample matrix) on the fiber performance were investigated. Also, the influence of temperature and time on desorption of analytes from fiber was studied. The proposed fiber has high capacity and demonstrates fast sampling of chlorinated organic solvents from urine samples with high sensitivity. The relative standard deviation (RSD, n =5) for all analytes was below 6.5%.