대표 농산물 중 살균제 Pencycuron의 HPLC 정밀 잔류분석법 개발

The single residue analytical method was developed for determining fungicide pencycuron residues in various agricultural commodities with high-performance liquid chromatography (HPLC). Pencycuron residue was extracted with acetone from representative crops such as Korean cabbage, apple, brown rice a...

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Veröffentlicht in:농약과학회지 2017, 21(1), , pp.75-83
Hauptverfasser: 이혜리(Hyeri Lee), 최훈(Hoon Choi), 김병준(Byung-Joon Kim), 김은혜(Eunhye Kim), 김수희(Su-Hee Kim), 이진범(Jin-Beom Lee), 이영득(Young Deuk Lee), 김정한(Jeong-Han Kim)
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Sprache:kor
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Zusammenfassung:The single residue analytical method was developed for determining fungicide pencycuron residues in various agricultural commodities with high-performance liquid chromatography (HPLC). Pencycuron residue was extracted with acetone from representative crops such as Korean cabbage, apple, brown rice and green pepper. After ethyl acetate/n-hexane partition and subsequent clean-up with silica gel chromatography, pencycuron residue was quantified by reversed phase HPLC with UV detection at 240 nm. The suspected residue of pencycuron was confirmed using selected-ion monitoring (SIM) LC/mass spectrometry (MS). Instrumental limit of quantitation (ILOQ) and method LOQ (MLOQ) were set at 2 ng and 0.02 mg/kg, respectively. Overall recoveries of pencycuron from different crop samples fortified at three levels (MLOQ, 10MLOQ, 100MLOQ) were 72~108%. This proposed method could be useful as official analytical method for quantification of pencycuron residues in agricultural commodities. 대표 농작물 중 살균제 pencycuron의 잔류량을 정밀하게 분석할 수 있는 단성분 분석법을 개발하였다. 대표 농작물로 배추, 사과, 현미, 고추를 선정하였으며, 정밀분석을 위해 고성능 액체크로마토그래피를 사용하였다. 농작물 시료 중 pencycuron 잔류분을 acetone을 이용하여 진탕 추출하고 에틸아세테이트/헥산을 이용한 액-액 분배법과 silica 크로마토그래피법을 통해 정제하였다. 역상 액체크로마토그래피를 이용해 UV 240 nm 파장에서 pencycuron를 정량분석하였으며, 질량분석기를 통해 잔류분을 확인하였다. 본 분석법을 통한 pencycuron의 기기정량한계는 2 ng으로 분석정량한계는 0.02 mg/kg이었다. 표준용액을 3수준(분석정량한계${\times}1$, ${\times}10$, ${\times}100$), 3반복으로 무처리 시료에 첨가하고 본 분석법의 회수율을 산출한 결과 72~108%이었다. 따라서, 본 분석법은 농산물 중 pencycuron 잔류분석을 위한 공전시험법으로써 분석개발기준을 충족하였다.
ISSN:1226-6183
2287-2051
DOI:10.7585/kjps.2017.21.1.75