Chinese Journal of Chromatography ›› 2019, Vol. 37 ›› Issue (12): 1363-1367.DOI: 10.3724/SP.J.1123.2019.08021

• Articles • Previous Articles     Next Articles

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

KONG Xiangji1, KONG Shun2, ZHANG Xuemei3, KONG Deyang1   

  1. 1. Nanjing Institute of Environmental Science, Ministry of Ecology and Environment of the People's Republic of China, Nanjing 210042, China;
    2. School of Civil Engineering, Southeast University, Nanjing 211189, China;
    3. Jiangsu Institute of Metrology, Nanjing 210023, China
  • Received:2019-08-17 Online:2019-12-08 Published:2020-12-11

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

CLC Number: