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Abstract: A monolithic solid-phase microextraction (SPME) fibre was fabricated based on a molecularly imprinted polymer that could be coupled with gas chromatography for extraction, and determination of chlorpyrifos. The time of extraction, pH, temperature and ionic strength were investigated as important factors on the extraction procedure. The fabricated fibre was firm, inexpensive, stable and selective which gave it vital importance in SPME. The selectivity of the fabricated fibre in relation to analogue compounds was also investigated. Under the optimum conditions, the calibration curve was linear in the range of 1-20 mg L-1 (R2 = 0.9899). The high extraction efficiency was obtained for chlorpyrifos with a detection limit of 0.23 mg L-1. The fabricated fibre was successfully applied to SPME of chlorpyrifos from apple and grape fruits after its extraction and followed by gas chromatography-flame ionisation detector analysis
Template and target information: chlorpyrifos
Author keywords: gas chromatography, Chlorpyrifos, molecularly imprinted polymer, solid-phase microextraction, pesticide