title: A strategy for the evaluation of an analytical approach for selected pesticide residues in complex agricultural product matrices-A case study of leek.
abstract: In order to choose a sensitive, selective, simple, rapid, cost-effective and reliable analytical method for a given complex sample, a strategy was proposed for the evaluation of an analytical approach to determining multi-pesticide residue in complex agricultural product matrices, using leek as an example. In this work, the matrix effect of most of pesticides were in the range of -50% to -90%. A simple thin layer chromatography (TLC) was used to evaluate the effect of cleanup. The results agree well with that of matrix effect described above. More than 91% of the investigated compounds achieved recoveries were in the range of 70-120%. The limits of detection and limits of quantification were in the range of 0.1-3.5ng/g and 0.4-11.5ng/g, respectively. The strategy can be used to analyze multi-pesticide residue or related chemicals in diverse agricultural product matrices to provide technical guidance in choosing an analytical approach.
authors.affiliation: College of Chemistry and Molecule Engineering, Nanjing Tech University, Nanjing 210009, China; Nanjing Institute of Environment Sciences, Ministry of Environment Protection, Nanjing 210042, China. Electronic address: xuyanyan92@163.com.
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Nanjing Institute of Environment Sciences, Ministry of Environment Protection, Nanjing 210042, China. Electronic address: snh@nies.org.
authors.forename: Ninghui
authors.initials: N
authors.lastname: Song
authors.affiliation: Nanjing Institute of Environment Sciences, Ministry of Environment Protection, Nanjing 210042, China. Electronic address: zhangqin@nies.org.
authors.forename: Qin
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Nanjing Institute of Environment Sciences, Ministry of Environment Protection, Nanjing 210042, China. Electronic address: ljn@nies.org.
authors.forename: Jining
authors.initials: J
authors.lastname: Liu
authors.affiliation: College of Chemistry and Molecule Engineering, Nanjing Tech University, Nanjing 210009, China. Electronic address: gschen3303@sina.com.
authors.forename: Guosong
authors.initials: G
authors.lastname: Chen
authors.affiliation: Nanjing Institute of Environment Sciences, Ministry of Environment Protection, Nanjing 210042, China. Electronic address: sll@nies.org.
authors.forename: Lili
authors.initials: L
authors.lastname: Shi
authors.affiliation: College of Chemistry and Molecule Engineering, Nanjing Tech University, Nanjing 210009, China. Electronic address: wjk@njtech.edu.cn.
authors.forename: Jikui
authors.initials: J
authors.lastname: Wang
mesh_terms: D002851:Chromatography, High Pressure Liquid; D057230:Limit of Detection; D019697:Onions / Q000737:chemistry*; D010573:Pesticide Residues / Q000032:analysis*; D015203:Reproducibility of Results; D053719:Tandem Mass Spectrometry
chemical_list: D010573:Pesticide Residues
keywords: Leek; Matrix effect; Pesticides; Pretreatment; UPLC–MS/MS–Qtrap