title: Ultrasonic nebulization extraction coupled with headspace hollow fiber microextraction of pesticides from root of Panax ginseng C.A. Mey.
abstract: The ultrasonic nebulization extraction coupled with headspace hollow fiber microextraction (UNE-HS-HFME) was applied for the extraction of pesticides from root of Panax ginseng C.A. Mey. Experimental parameters, which affect the performances of ultrasonic nebulization extraction coupled with headspace hollow fiber microextraction, such as the kind of acceptor solvent in the pore of the fiber wall, the sample amount, extraction time, salt concentration in extraction solvent, pH of the acceptor solution, the elution time, and times were studied and optimized. The analytes were determined by high-performance liquid chromatography. The detection limits for simeton, monolinuron, chlortoluron, karmex, and prebane are 20.9, 18.4, 18.2, 12.4, and 22.2 μg/kg, respectively. Besides volatile and semi-volatile compounds, the non-volatile compounds also can be determined by the proposed method. The extraction and enrichment process can be performed simultaneously.
authors.affiliation: College of Chemistry, Jilin University, Changchun, PR China.
authors.forename: Xueyuan
authors.initials: X
authors.lastname: Li
authors.forename: Lu
authors.initials: L
authors.lastname: Wang
authors.forename: Ziming
authors.initials: Z
authors.lastname: Wang
authors.forename: Huihui
authors.initials: H
authors.lastname: Zhang
authors.forename: Rui
authors.initials: R
authors.lastname: Su
authors.forename: Xu
authors.initials: X
authors.lastname: Xu
authors.forename: Hanqi
authors.initials: H
authors.lastname: Zhang
mesh_terms: D002851:Chromatography, High Pressure Liquid; D005894:Panax / Q000737:chemistry*; D010575:Pesticides / Q000032:analysis / Q000302:isolation & purification*; D018517:Plant Roots / Q000737:chemistry*; D052617:Solid Phase Microextraction / Q000295:instrumentation / Q000379:methods*; D014465:Ultrasonics
chemical_list: D010575:Pesticides