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首页> 外文期刊>RSC Advances >Residue and risk assessment of fluopicolide and cyazofamid in grapes and soil using LC-MS/MS and modified QuEChERS
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Residue and risk assessment of fluopicolide and cyazofamid in grapes and soil using LC-MS/MS and modified QuEChERS

机译：使用LC-MS / MS和改良的QuEChERS评估葡萄和土壤中氟吡草胺和氰胺的残留量和风险评估

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The residue behavior of fluopicolide, cyazofamid and their metabolites (M-01, M-02 and CCIM) was evaluated in open field conditions. The dissipation and terminal residue of these five compounds were determined via a modified QuEChERS method, by adjusting the liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) conditions and optimizing the purification process. This led to a satisfactory average recovery of between 71.6% and 107.7%, as well as limit of quantitation (LOQ) values of 0.05?mg kg ~(?1) . The dissipation results recorded in two places in China illustrated that the half-life values of fluopicolide are 11.4 (Anhui, grape), 19.7 (Anhui, soil) and 21.8 (Hebei, grape), 21.2 (Hebei, soil) days, respectively. As for the dissipation of cyazofamid, it was found to have half-life values of 8.7 (Anhui, grape) and 20.1 (Hebei, grape) days. The final residues in grapes were found to be below the maximum residue limit (MRL) of 2 mg kg ~(?1) for fluopicolide and 1 mg kg ~(?1) for cyazofamid. Thus, a preharvest interval of 10 days and recommended MRLs from the Joint FAO/WHO Meeting on Pesticide Residues (JMPR) are appropriate to ensure the food safety of fluopicolide and cyazofamid in grapes. The hazard quotient (HQ) and acute hazard index (aHI) values were found to be below 100%, demonstrating negligible risk in consuming grapes, regardless of long or short-term exposure.
机译：在开阔田野条件下评估了氟吡草胺，氰草胺及其代谢物（M-01，M-02和CCIM）的残留行为。通过改进的QuEChERS方法，调节液相色谱和串联质谱（LC-MS / MS）条件并优化纯化工艺，确定了这五种化合物的耗散和末端残留。这导致令人满意的平均回收率在71.6％和107.7％之间，定量极限（LOQ）值为0.05？mg kg〜（？1）。在中国两个地方记录的耗散结果表明，氟哌内酯的半衰期值分别为11.4（安徽，葡萄），19.7（安徽，土壤）和21.8（河北，葡萄），21.2（河北，土壤）天。关于氰基草胺的消散，发现其半衰期值为8.7天（安徽，葡萄）和20.1天（河北，葡萄）。发现葡萄中的最终残留量低于氟吡利特的最大残留限量（MRL）2 mg kg〜（？1），而氰基法米定的最大残留限量（MRL）低于1 mg kg〜（？1）。因此，收获前的间隔为10天，粮农组织/世界卫生组织农药残留联席会议（JMPR）提出的最大残留限量是确保葡萄中氟吡草胺和氰基草胺的食品安全的适当方法。发现危害商（HQ）和急性危害指数（aHI）值均低于100％，表明无论长期或短期接触，食用葡萄的风险均可以忽略。

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