title: [Determination of five pyrethroid pesticides residues in Anoectochilus roxburghii by cloud point extraction-back extraction and GC-MS].
abstract: A method for residual determination of 5 pyrethroid pesticides in Anoectochilus roxburghii by cloud point extraction-back extraction-GC-MS was established. PEG 6000 was used as extraction agent and isooctane was used for back-extractant. The con- tent was calculated by external standard method. The linear range was from 15 to 2 000 μg x kg(-1) with the good correlation coefficients (0.955-0.999). The recoveries at spiked concentrations of 50-500 μg x kg(-1) ranged from 85.12% to 101.6%. The limit of detection and quantification of 5 pyrethroid pesticides were in the range of 0.63-3.10 μg x kg(-1) and 2.10-10.31 μg x kg(-1), respectively. The proposed method can be applied to the determination of pyrethroid pesticides residues in A. roxburghii.
authors.forename: Hong-Bo
authors.initials: HB
authors.lastname: Liu
authors.forename: Xiao-Fang
authors.initials: XF
authors.lastname: Zhao
authors.forename: Gui-Ying
authors.initials: GY
authors.lastname: Shi
authors.forename: Qing-Song
authors.initials: QS
authors.lastname: Shao
authors.forename: Mine-Van
authors.initials: MV
authors.lastname: Li
mesh_terms: D005591:Chemical Fractionation / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D029595:Orchidaceae / Q000737:chemistry*; D010573:Pesticide Residues / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification*; D011722:Pyrethrins / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D010573:Pesticide Residues; D011722:Pyrethrins