PDF(Pubmed)
Abstract：
The potential hazards of chlorfenapyr warrant attention owing to its widespread application on vegetables. A comprehensive investigation of the fate of chlorfenapyr in the ecosystem is imperative. This paper presents a method for detecting chlorfenapyr and tralopyril in cabbages, which exhibits good linearity (determination coefficients > 0.99) and satisfactory recoveries (82.50 %-108.03 %). Chlorfenapyr residues in cabbages demonstrate a positive correlation with its application dose and time. Tralopyril can inhibit the dissipation of chlorfenapyr, as evidenced by the half-lives of 5.67-11.14 d (chlorfenapyr) and 6.91-14.77 d (total chlorfenapyr). The results of terminal residues (<2.0 mg/kg) and dietary risk assessment (<100 %) suggest preharvest intervals of 14 d (greenhouse) and 10 d (open-field). Additionally, the uptake of chlorfenapyr in cabbages is limited (translocation factor < 1), while the downward translocation predominantly occurs through phloem transport. The findings provide valuable insights for understanding the fate and potential risks of chlorfenapyr in cabbages.
摘要：
由于在蔬菜上的广泛应用，氯非那的潜在危害值得关注。必须全面调查生态系统中的氯非那霉素的命运。本文提出了一种检测卷心菜中的氯非那霉素和曲洛普利的方法。具有良好的线性(测定系数>0.99)和令人满意的回收率(82.50%-108.03%)。卷心菜中的杀虫子残留量与其施用剂量和时间呈正相关。曲洛普利可以抑制氯非那霉素的消散，半衰期为5.67-11.14d（氯非那霉素）和6.91-14.77d（总氯非那霉素）。最终残留（<2.0mg/kg）和饮食风险评估（<100％）的结果表明，收获前间隔为14d（温室）和10d（露天）。此外,在卷心菜中摄取的氯非那霉素是有限的（易位因子<1），而向下移位主要通过韧皮部运输发生。研究结果为了解卷心菜中氯非那霉素的命运和潜在风险提供了有价值的见解。
