Direkt Daldırma Katı Faz Mikroekstraksiyon Yöntemi İle Kiraz Örneklerinde Klorpirifos Kalıntılarının Gaz Kromatografisi Kütle Spektrometresinde Tayini

Yıl 2018, Cilt: 30 Sayı: 4, 398 - 402, 31.12.2018

Oya Aydın Urucu , Ece Kök Yetimoğlu , Deniz Devecioğlu

https://doi.org/10.7240/marufbd.398657

Cited By: 1

Öz

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 %.

Anahtar Kelimeler

Fiber , Pesticides , Sample handing

Determination of Chlorpyrifos Residues in Cherry Samples by Direct Immersion Solid Phase Microextraction Coupled with Gas Chromatography Mass Spectrometry

Öz

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 %.

Anahtar Kelimeler

Fiber , Pesticides , Sample handing

Kaynakça

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