alexa Enhancing extraction rate in solid-phase microextraction by using nano-structured polyaniline coating.


Chemical Sciences Journal

Author(s): Mehdinia A, Mousavi MF

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Abstract 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. This article was published in J Sep Sci and referenced in Chemical Sciences Journal

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