Curr. Biotech. ›› 2014, Vol. 4 ›› Issue (2): 135-141.DOI: 10.3969/j.issn.2095-2341.2014.02.11

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Extraction Method for Determination of Chlorpyrifos Residue in Soil and Ligusticum chuanxiong

MU Xiang-rong, MA Yu-ying, YUAN Mao-hua, MA Ling,  JIANG Gui-hua,  CAO Yun   

  1. Third-Level Lab of State Administration of TCM for Chinese Medical Origin and Quality Identification, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
  • Received:2014-01-19 Online:2014-03-25 Published:2014-03-12

Abstract: To establish the optimum extraction method for determination of chlorpyrifos in soil and Ligusticum chuanxiong, chlorpyrifos was determined by GC\|MS method. The extraction solvent, extraction time, extraction times and solvent volume levels was studied by orthogonal design to optimize the extraction method. The optimum chlorpyrifos residue extraction conditions for aerial parts and rhizome of Ligusticum chuanxiong were 3 fold of acetonitrile, ultrasonic extracting 15 min for twice. The optimum chlorpyrifos residue extraction conditions for soil were 10 fold of ethyl acetate, shock extracting 30 min for twice. The optimum extraction methods was validated to be feasible, which meet the requirements of the pesticide residue analysis.

Key words: Ligusticum chuanxiong, soil, chlorpyrifos residue, extraction, GC-MS