Li Zeng-mei
2009
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Journal
Food Science
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.