Akademik Veri Yönetim Sistemi
International Journal of Advances in Engineering and Pure Sciences, cilt.30, sa.4, ss.398-402, 2018 (Hakemli Dergi)
A method based on a solid phase
microextraction gas chromatography- mass spectrometry (SPME-GC/MS) was
developed for the quantitative determination of chlorpyrifos residues in cherry
samples. Three kinds of 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, salinity, stirring rate were
investigated. The analytes from all sample extracts were preconcentrated for 30
minutes in the SPME fiber at 60 °C and then the fiber was desorbed by heating
at 250 °C for 10 minutes in the gas chromatography injection port. Limits of
detection (LOD) and quantitation (LOQ) values were 0.03 µg/L and 0,1 µg/L,
respectively. An average recovery range was 93-98% with relative standard
deviation (RSD) < 10 %.