doi:

DOI: 10.3724/SP.J.1123.2019.08021

Chinese Journal of Chromatography (色谱) 2019/37:12 PP.1363-1367

Determination of diethyl aminoethyl hexanoate residues in apples by gas chromatography-mass spectrometry combined with improved QuEChERS


Abstract:
A method was developed for the determination of diethyl aminoethyl hexanoate (DA-6) residues in apples by gas chromatography-mass spectrometry (GC-MS) combined with improved QuEChERS. The samples were first extracted with warm water, then, the extract was subjected to liquid-liquid re-extraction with dichloromethane, followed by rotary evaporation concentration. The residues were cleaned up with primary secondary amine (PSA). The analytes were separated on an HP-5 capillary column and detected using an EI source in the SIM mode. The recoveries ranged from 74.1% to 84.2% at three spiked levels, with relative standard deviations (RSDs) between 1.5% and 4.1%. The limit of detection and limit of quantification were 0.0024 mg/kg and 0.008 mg/kg, respectively. The developed method is sensitive, and practically applicable for the determination of DA-6 residues in apple samples.

Key words:gas chromatography-mass spectrometry (GC-MS),QuEChERS,diethyl aminoethyl hexanoate (DA-6),apple

ReleaseDate:2019-12-02 10:05:20



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