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소고기와 우유에서의 잔류농약 다성분분석을 위한 GC-MS/MS 분석 및 QuEChERS 전처리 방법의 검토
이종화 ( Jonghwa Lee ),오다영 ( Da-young Oh ),박주현 ( Ju Hyeon Park ),민지혜 ( Jihye Min ),임무송 ( Moo-song Lim ),박성국 ( Sung-kug Park ),강인호 ( In-ho Kang ) 한국환경농학회 2021 한국환경농학회 학술대회집 Vol.2021 No.-
Bovine meat and milk are predominant food resources that are consumed by a large portion of the population in the world. Pesticides are commonly used on animal feed and they could be accumulated in animal tissues and other animal-derived foods like milk. To prevent the unnecessary exposure of consumers to pesticides, the determination of pesticide residues in bovine meat and milk is important. However, analyzing pesticide multi-residues in livestock is challenging due to a large amount of lipid and fats as well as the matrix-complexity of animal tissue. Here, we present the initial results of method development for the determination of 127 pesticides using GC-MS/MS. The multiple reaction monitoring transitions were optimized to allow simultaneous quantitation and identification. Sample preparation and clean-up were based on the modified QuEChERS methods. Initial results indicate that extraction with acetonitrile without other acid gave desirable performances in view of the simplicity of the method. Several combinations of the clean-up absorbents and cartridges including C18, PSA, Prime HLB, Captiva EMR-Lipid were compared in terms of recovery rate and repeatability. Further optimization of the sample preparation method and validation of the optimized method is needed for obtaining accurate and reliable data.