title: Vortex-assisted matrix solid-liquid dispersive microextraction for the analysis of triazole fungicides in cotton seed and honeysuckle by gas chromatography.
abstract: A one-step analytical method termed vortex-assisted matrix solid-liquid dispersive microextraction (VA-MSLDME) was developed for the determination of seven triazole fungicides from cotton seed and honeysuckle prior to gas chromatography with electron capture detection. The VA-MSLDME was performed by mixing the matrix, primary secondary amine, acetonitrile, toluene, and water in one single system. The target fungicides in the sample were extracted, cleaned up and preconcentrated simultaneously in the matrix/acetonitrile/water/toluene system. Meanwhile, the interferences were adsorbed by the cleanup adsorbent. The extraction recoveries of the fungicides from the samples varied from 82.9% to 97.8% with relative standard deviations of 4.4-8.5%. The enrichment factors of the analytes ranged from 22 to 47, and the limits of detection were in the range of 0.05-20 μg/kg. The results demonstrated the significant predominance of VA-MSLDME in the analysis of pesticide residues in cotton seed and honeysuckle samples.
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China.
authors.forename: Jiaying
authors.initials: J
authors.lastname: Xue
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China.
authors.forename: Huichen
authors.initials: H
authors.lastname: Li
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China. Electronic address: lfm2000@cau.edu.cn.
authors.forename: Fengmao
authors.initials: F
authors.lastname: Liu
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China.
authors.forename: Wenqing
authors.initials: W
authors.lastname: Jiang
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China.
authors.forename: Fan
authors.initials: F
authors.lastname: Hou
mesh_terms: D000097:Acetonitriles; D002849:Chromatography, Gas / Q000379:methods*; D003369:Cottonseed Oil / Q000032:analysis / Q000737:chemistry*; D005659:Fungicides, Industrial / Q000032:analysis; D059627:Liquid Phase Microextraction / Q000379:methods*; D031239:Lonicera / Q000737:chemistry*; D010573:Pesticide Residues / Q000032:analysis; D012639:Seeds / Q000737:chemistry; D014230:Triazoles / Q000032:analysis / Q000737:chemistry*; D014867:Water / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D000097:Acetonitriles; D003369:Cottonseed Oil; D005659:Fungicides, Industrial; D010573:Pesticide Residues; D014230:Triazoles; D014874:Water Pollutants, Chemical; D014867:Water; C032159:acetonitrile
keywords: Cotton seed; Honeysuckle; Triazole fungicides; Vortex-assisted matrix solid–liquid dispersive microextraction