Abstract
ABSTRACT A new hybrid solid-phase microextraction coating, [Ba(5,5ʹ-dcbipy)(µ-H2O)2 (H2O)2]n and polypyrrole, has been prepared using an electrochemical method. The fibre was well characterised and showed superior properties. The fibre showed excellent thermal stability, adherently and chemical stability which were suitable for extracting analytes from harsh media and desorbing them in a high thermal inlet of a GC. Four phthalate esters were extracted with this fibre and then analysed via GC-flame ionisation detector. Salt concentration, temperature and time of extraction were optimised. The detection limits and linear ranges were 0.077–0.25 μg L−1 and 0.125–500 to 0.25–125 μg L−1, respectively. The intra-day and inter-day relative standard deviations were found to be 6.9–9.4 and 2.9–23.4%, respectively. The results then were compared with other works. Phthalates in two different aqueous samples of food products were successfully analysed with the proposed method.
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