FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (8): 194-196.doi: 10.7506/spkx1002-6630-200908040

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Detection of Chlorbenzuron Residues and Study on Its Dynamic Degradation in Apple and Soil

MAO Jiang-sheng1 ZHAO Shan-cang1 MENG Jing-jing2 GUO Chang-ying1 DENG Li-gang1 LI Zeng-mei1   

  1. (1.Central Laboratory, Shandong Academy of Agricultural Sciences , Jinan 250100, China
    2. High-Tech Research Center, Shandong Academy of Agricultural Sciences, Jinan 250100, China)
  • Received:2008-05-09 Revised:2008-06-30 Online:2009-04-15 Published:2010-12-29
  • Contact: MAO Jiang-sheng1 E-mail:maojiangsheng@163.com

Abstract:

The dynamic and final residues of chlorbenzuron in apple and soil were determined by HPLC. The minimum detectable amount is 1ng, the lowest detectable concentration is 0.1mg/kg, the average recovery from apple and soil is 91.3% to 99.9% and the variation coefficient is 0.51% to 2.44%, which meet the requirements for pesticide residue analysis. Moreover, the half lives of chlorbenzuron are 6.9 d and 25.6 d in apple and soil, respectively. Its degradation rate in soil is significantly faster than in apple. When 25% chlorbenzuron suspension diluted by 1500 times was applied, its residue is 1.2315 mg/kg in apple while not detected out in soil after 14 days.

Key words: chlorbenzuron, apple, soil, residues, degradation, HPLC

CLC Number: