title: Residue determination of glufosinate in plant origin foods using modified Quick Polar Pesticides (QuPPe) method and liquid chromatography coupled with tandem mass spectrometry.
abstract: A sensitive and specific method for the determination of glufosinate in plant origin foods was developed. The method involves extraction using modified QuPPe method, clean-up by multi-walled carbon nanotubes (MWCNTs), derivatization with 9-fluorenylmethyl chloroformate (FMOC-Cl) and detection with liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). The method was validated on twelve matrices spiked at 10 or 20, 100 and 500 μg/kg. The recovery ranged from 80% to 108% with intra-day RSDs (n=5) of 0.6-9.8% and inter-day RSDs (n=15) of 3.0-9.4%. Good linearities (R(2)⩾0.9991) were obtained for all matrices. The limit of detection (LOD) and limit of quantification (LOQ) for the selected matrices ranged from 0.3 to 3.3 μg kg(-1) and from 1 to 10 μg kg(-1), respectively. The method was demonstrated to be reliable and sensitive for the routine monitoring of glufosinate in plant origin foods.
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.
authors.forename: Yongtao
authors.initials: Y
authors.lastname: Han
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.
authors.forename: Le
authors.initials: L
authors.lastname: Song
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.
authors.forename: Pengyue
authors.initials: P
authors.lastname: Zhao
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.
authors.forename: Yanjie
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.
authors.forename: Nan
authors.initials: N
authors.lastname: Zou
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.
authors.forename: Yuhong
authors.initials: Y
authors.lastname: Qin
authors.affiliation: Institute of Pesticide and Environmental Toxicology, Guangxi University, Nanning 530005, China.
authors.forename: Xuesheng
authors.initials: X
authors.lastname: Li
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China; Institute of Pesticide and Environmental Toxicology, Guangxi University, Nanning 530005, China. Electronic address: canpingp@cau.edu.cn.
authors.forename: Canping
authors.initials: C
authors.lastname: Pan
mesh_terms: D000613:Aminobutyrates / Q000032:analysis*; D002853:Chromatography, Liquid / Q000379:methods; D005449:Fluorenes / Q000737:chemistry; D005504:Food Analysis / Q000295:instrumentation / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D057230:Limit of Detection; D037742:Nanotubes, Carbon / Q000737:chemistry; D010573:Pesticide Residues / Q000032:analysis*; D010945:Plants, Edible / Q000737:chemistry*; D015203:Reproducibility of Results; D053719:Tandem Mass Spectrometry / Q000379:methods
chemical_list: D000613:Aminobutyrates; D005449:Fluorenes; D037742:Nanotubes, Carbon; D010573:Pesticide Residues; C003121:phosphinothricin; C054007:1-(9-fluorenyl)methyl chloroformate
keywords: Derivatization; Glufosinate; LC–MS/MS; MWCNTs; QuPPe method