Abstract:A method based on a direct immersion solid phase microextraction gas chromatographymass spectrometry (DI-SPME-GC-MS) was developed for the quantitative determination of chlorpyrifos (CRF) residues in cherry samples. The performance of three kinds of commercial fiber coatings: PA (polyacrylate, 85µm), PDMS-DVB (polydimethylsiloxane-divinylbenzene 65 mm) and PDMS (polydimethylsiloxane, 100 mm) were compared. Various parameters affecting SPME procedures such as temperature, extraction and desorption times, salini… Show more
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