Residue patterns of buprofezin and teflubenzuron in treated peaches

• 作者: Jae-Hun Park Ji-Young Yoon Kyu-Seung Lee Ye-hoon Han
• 来源期刊: 农业化学和环境(英文)
• 学科: 医学
• 关键词: Biological HALF-LIFE BUPROFEZIN PEACH RESIDUE Teflubenzuron
• 年，卷（期）: nyhxhhjyw_2012,（1）
• 页码范围: 10-14
• 页数: 5页
• 分类号: R73

摘要

The biological half-life and final residue levels of buprofezin and teflubenzuron were examined in peaches over a 14-day cultivation period. The residue levels of buprofezin and teflubenzuron were analyzed by chromatographic method with recovery ranging from 84.0% to 96.6%. The biological half-lives of buprofezin andteflubenzuron were 4.88 and 11.49 days at the standard dose, and 4.40 and 10.86 days at a triple dose, respectively. The initial concentration of buprofezin exceeded the maximum residue limit (MRL) set in Korea, but the concentration decreased to below the MRL within 6 days after application. The initial and persisting concentrations of teflubenzuron were all below the prescribed MRL. The final residue levels of buprofezin and teflubenzuron were 0.17 and 0.10?mg·kg﹣1 following a standard single dose, and 0.20 and 0.23 mg·kg﹣1 following a triple dose, respectively. The final re-sidue levels of buprofezin and teflubenzuron were also compared with the good agricultural practices standards of the United States and Italy.