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Determination of five pyrethroid pesticides residues in Anoectochilus roxburghii by cloud point extraction-back extraction and GC-MS / 中国中药杂志
Article in Zh | WPRIM | ID: wpr-327878
Responsible library: WPRO
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.
Subject(s)
Full text: 1 Index: WPRIM Main subject: Pyrethrins / Pesticide Residues / Chemistry / Orchidaceae / Chemical Fractionation / Gas Chromatography-Mass Spectrometry / Methods Language: Zh Journal: China Journal of Chinese Materia Medica Year: 2014 Type: Article
Full text: 1 Index: WPRIM Main subject: Pyrethrins / Pesticide Residues / Chemistry / Orchidaceae / Chemical Fractionation / Gas Chromatography-Mass Spectrometry / Methods Language: Zh Journal: China Journal of Chinese Materia Medica Year: 2014 Type: Article