• 中文核心期刊
  • CSCD来源期刊
  • 中国科技核心期刊
  • CA、CABI、ZR收录期刊

5种农药在豇豆上使用的安全性评价

Safe Application of Five Pesticides for Cowpeas

  • 摘要: 为了评价阿维菌素、吡虫啉、乙基多杀菌素、多菌灵和戊唑醇等5种农药在豇豆上的使用安全性,以5种农药的最大推荐剂量,分设1、2、3次施药,采收不同间隔期的豇豆样品。在电喷雾正离子(ESI+),多反应监测(MRM)模式下,用超高效液相色谱-串联质谱法(UPLC/MS/MS)对样品中的农药残留进行分析。试验结果表明:阿维菌素、吡虫啉和戊唑醇在豇豆中的残留量均小于最大残留限量值(MRL);药后2 d采收的豇豆中乙基多杀菌素残留量低于最大残留限量值要求;多菌灵的安全间隔期大于10 d,因而,多菌灵不适合在豇豆成熟期使用。

     

    Abstract: The safety of 5 pesticides, abamectin, imidacloprid, spinetoram, carbendazim and tebuconazole, applied on cowpea was evaluated. At the maximum recommended dosage, each of these pesticides was sprayed on the plants 1, 2 or 3 times prior to sampling. Samples of the treated cowpeas were analyzed using the ultrahigh performance liquid chromatography-tandem mass spectrometry (UPLC/MS/MS) with the positive ion multiple reaction monitoring (MRM) mode. The residues of abamectin, imidacloprid and tebuconazole were found to be lower than their maximum residue limits (MRLs). The residue of spinetoram was below the MRL 2 days after a final application. However, carbendazim required more than 10 days to be considered safe for consumption and was, therefore, not recommended for the application on cowpeas at mature stage.

     

/

返回文章
返回