Journal
JOURNAL OF SEPARATION SCIENCE
Volume 31, Issue 20, Pages 3565-3572Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.200800284
Keywords
Nano-structure; Polyaniline; Polychlorinated biphenyls; Solid-phase microextraction
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Funding
- Tarbiat Modares University
- Iranian National Center for Oceanography (INCO)
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The decrement of equilibrium extraction time without losing extraction efficiency in solid-phase microextraction (SPME) was achieved using nano-structured coating. Polyaniline (PANI) was used as an extraction phase for the comparison of extraction capacity and equilibrium extraction time of nano-and micro-structured coatings. Polychlorinated biphenyls (PCBs) were used as model compounds to examine the extraction properties of nano-and micro-structured coatings. The results revealed that nano-structured PANI coating showed higher extraction rate and shorter desorption time than micro-structured coating, because of the larger surface area. In order to evaluate the extraction capability of prepared nano-structured PANI coating, headspace-SPME method was used for the determination of PCBs in sediment samples by GC-electron capture detector. The proposed method was validated using the certified reference material.
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