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Metal–organic framework UiO‐67‐coated fiber for the solid‐phase microextraction of nitrobenzene compounds from water
Author(s) -
Zang Xiaohuan,
Zhang Xi,
Chang Qingyun,
Li Sen,
Wang Chun,
Wang Zhi
Publication year - 2016
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.201600426
Subject(s) - solid phase microextraction , nitrobenzene , detection limit , chromatography , extraction (chemistry) , fiber , solid phase extraction , analyte , analytical chemistry (journal) , gas chromatography , desorption , sample preparation , chemistry , coating , materials science , gas chromatography–mass spectrometry , mass spectrometry , adsorption , biochemistry , organic chemistry , catalysis
A sol–gel coating technique was applied for the preparation of a solid‐phase microextraction fiber by coating the metal–organic framework UiO‐67 onto a stainless‐steel wire. The prepared fiber was explored for the headspace solid‐phase microextraction of five nitrobenzene compounds from water samples before gas chromatography with mass spectrometric detection. The effects of the extraction temperature, extraction time, sample solution volume, salt addition, and desorption conditions on the extraction efficiency were optimized. Under the optimal conditions, the linearity was observed in the range of 0.015–12.0 μg/L for the compounds in water samples, with the correlation coefficients ( r ) of 0.9945–0.9987. The limits of detection of the method were 5.0–10.0 ng/L, and the recoveries of the analytes from spiked water samples for the method were in the range of 74.0–102.0%. The precision for the measurements, expressed as the relative standard deviation, was less than 11.9%.