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Dissipation behavior, residue distribution, and risk assessment of triflumizole and FM-6-1 in greenhouse strawberries and soil

Abstract

This study aimed to develop a reliable method for the simultaneous analysis of triflumizole (TRIF) and its primary metabolite FM-6-1 (N-4-chloro-2-trifluoromethylphenyl-2-propoxy-acetamidine) in the soil and treated strawberries using solid phase extraction (SPE) coupled with gas chromatography-tandem mass spectrometry (GC-MS/MS). Using this method, TRIF and FM-6-1 degradation in strawberries and the soil under greenhouse conditions were investigated. The field trials showed that t1/2 of TRIF and total residues (the sum of TRIF and FM-6-1) were 1.6–2.2 days and 2.4–2.9 days in strawberry and 4.3–6.1 days and 5.5–6.9 days in soil, respectively. Terminal total residues were ≤ 0.39 mg/kg in strawberry and ≤ 0.42 mg/kg in soil from 5 to 10 days of harvest. The risk quotient (RQ) of TRIF was below 1.89%, showing that the dietary risk of TRIF in strawberry was low. These findings provide guidance for the use of TRIF on crops and provide reference to establish the maximum residue level (MRL) of TRIF in strawberry.

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Funding

This work was supported by the Zhejiang Province Public Welfare Technology Application Research Project (LGN19C140010), the National Natural Science Foundation of China (21806143) ,and the National Key Research and Development Program of China (2016YFD0200204-4).

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Correspondence to Jianzhong Yu or Xueping Zhao.

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Yu, J., Xu, Z., Zhang, C. et al. Dissipation behavior, residue distribution, and risk assessment of triflumizole and FM-6-1 in greenhouse strawberries and soil. Environ Sci Pollut Res 27, 15165–15173 (2020). https://doi.org/10.1007/s11356-020-08034-6

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Keywords

  • Strawberry
  • Triflumizole
  • FM-6-1
  • Dissipation
  • Residues
  • Risk assessment