http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Determination of Paraquat in Garlic by LC-MS/MS
ChaeUk Lim,Hyejin Park,unJoo Baek,Jimin Yoon,Juryeong Lee,Byeung Gon Shin,Soon-Kil Cho,Sung-Hee Hong 한국농약과학회 2021 한국농약과학회 학술발표대회 논문집 Vol.2021 No.11
A fast, sensitive, reliable and economical method was developed for the determination of paraquat (a widely used herbicide) in garlic using iquid chromatography-tandem mass spectrometry (LC-MS/MS). Garlic contains numerous sulfur compounds and strong matrix effect that are difficult to analyze in a single run using HPLC. The sample was extracted with 0.1M HCl under heating. Chromatographic separation of paraquat was achieved on a hydrophilic interaction liquid chromatography column (2.1×50mm, 2.7μm) with a gradient program using 50 mM ammonium formate, 0.5% formic acid and acetonitrile as mobile phase. The low salt concentration used in the eluting buffer ensured extended LC-MS analysis of paraquat in garlic without the necessity of frequent source cleaning. The validity of the developed method was evaluated by spiking paraquat in garlic at 0.01 and 0.1mg/kg. Recovery ranged from 76.5 to 100.0%. The limit of detection is < 0.01mg/kg.