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

• 分析检测 • 上一篇    下一篇

苹果及其土壤中灭幼脲的残留检测与消解动态研究

毛江胜1,赵善仓1,孟静静2,郭长英1,邓立刚1,李增梅1   

  1. 1.山东省农业科学院中心实验室 2.山东省农业科学院高新技术研究中心
  • 收稿日期:2008-05-09 修回日期:2008-06-30 出版日期:2009-04-15 发布日期:2010-12-29
  • 通讯作者: 毛江胜 E-mail:maojiangsheng@163.com

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

摘要:

采用高效液相色谱分析技术测定了灭幼脲在苹果和土壤中的动态残留和最终残留。灭幼脲的最低检出量为1ng,最低检出浓度为0.1mg/kg。在苹果和土壤中的平均回收率为91.3%~99.9%,相对标准偏差0.51%~2.44%,符合农药残留分析的要求。实验结果表明:灭幼脲在土壤和苹果中的半衰期分别为6.9d和25.6d,土壤中的消解速率明显快于苹果中的消解速率。按稀释1500倍药液施药14d后,苹果中最高残留量为1.2315mg/kg,土壤中未检出。

关键词: 灭幼脲, 苹果, 土壤, 残留, 消解, 高效液相色谱

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

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