25 g/L灭菌唑悬浮种衣剂在小麦及其土壤中的消解动态与残留

为评价灭菌唑在小麦上使用的安全性,建立其使用规范,于2015年开展了25 g/L灭菌唑悬浮种衣剂消解动态研究及最终残留试验。样品采用乙腈提取,固相萃取柱净化,LC/MS/MS进行检测。结果表明:灭菌唑在小麦植株和土壤中的半衰期分别为1.8~11.7 d、12.5~17.5 d。灭菌唑在小麦、植株及土壤中的最终残留量均低于0.05 mg/kg。结合日本小麦上灭菌唑最大残留限量值,拟推荐灭菌唑在我国小麦上的最大残留限量为0.05 mg/kg。

Degradation Dynamics and Final Residues of Triticonazole 25 g/L FS in Wheat and Soil

In order to evaluate the safety and establish the regular use of triticonazole in wheat.The residual dynamic experiments of triticonazole were carried out in 2015.Samples were extracted by acetonitrile,purified by solid phase extraction column,then detected by LC/MS/MS.The results showed that the half-lives of triticonazole in wheat and soil were 1.8-11.7 d,12.5-17.5 d,respectively.The final residues oftriticonazole in wheat,plant and soil were less than 0.05 mg/kg.