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Citation: KONG Xiangji, KONG Shun, ZHANG Xuemei, KONG Deyang. Determination of diethyl aminoethyl hexanoate residues in apples by gas chromatography-mass spectrometry combined with improved QuEChERS[J]. Chinese Journal of Chromatography, ;2019, 37(12): 1363-1367. doi: 10.3724/SP.J.1123.2019.08021 shu

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

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 Date: 17 August 2019

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