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<p>Watermelon is a popular summer fruit consumed worldwide. Due to increasing pest resistance and limited pesticide choices for minor crops, the introduction and registration of new pesticide options for minor crops are essential. In this study, a 12% suspension concentrate formulation (containing 7% cyantraniliprole and 5% spinetoram) was applied across 10 regions in China following good agricultural practices. Residues of cyantraniliprole and spinetoram as well as metabolites in watermelon were analyzed using a quick, easy, cheap, effective, rugged and safe (QuEChERS) method coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS). The method was reliable with mean recoveries for the 5 analytes ranging from 83 to 101% and relative standard deviations ≤ 8.2%. Limits of quantification were &lt; 0.01&#xa0;mg kg<sup>− 1</sup> for all compounds. Degradation rates were below 30% across all storage intervals. Final residues of cyantraniliprole and spinetoram were both &lt; 0.01&#xa0;mg kg<sup>− 1</sup>, remaining below Chinese maximum residue limits within the 5-day pre-harvest interval. Total spinetoram residues were &lt; 0.032&#xa0;mg kg<sup>− 1</sup>. These findings provide scientific guidance for the safe and compliant use of cyantraniliprole and spinetoram in watermelon production.</p>

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Residue analysis of cyantraniliprole, spinetoram, and its major metabolites in watermelon using quechers and LC-MS/MS

  • 期刊论文

  • 发表日期：

    2026年2月13日

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  • Nannan Pang,
  • Qi Zhang,
  • Ting Zhu,
  • Jiye Hu

摘要

Watermelon is a popular summer fruit consumed worldwide. Due to increasing pest resistance and limited pesticide choices for minor crops, the introduction and registration of new pesticide options for minor crops are essential. In this study, a 12% suspension concentrate formulation (containing 7% cyantraniliprole and 5% spinetoram) was applied across 10 regions in China following good agricultural practices. Residues of cyantraniliprole and spinetoram as well as metabolites in watermelon were analyzed using a quick, easy, cheap, effective, rugged and safe (QuEChERS) method coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS). The method was reliable with mean recoveries for the 5 analytes ranging from 83 to 101% and relative standard deviations ≤ 8.2%. Limits of quantification were < 0.01 mg kg− 1 for all compounds. Degradation rates were below 30% across all storage intervals. Final residues of cyantraniliprole and spinetoram were both < 0.01 mg kg− 1, remaining below Chinese maximum residue limits within the 5-day pre-harvest interval. Total spinetoram residues were < 0.032 mg kg− 1. These findings provide scientific guidance for the safe and compliant use of cyantraniliprole and spinetoram in watermelon production.