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首页> 外文期刊>Environmental Science and Pollution Research >Residue behavior and risk assessment of cymoxanil in grape under field conditions and survey of market samples in Guangzhou
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Residue behavior and risk assessment of cymoxanil in grape under field conditions and survey of market samples in Guangzhou

机译：广州市场条件下葡萄葡萄的残留行为及风险评价及广州市场样本调查

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摘要

A simple and fast method based on liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed for cymoxanil residue analysis in grape. Sample preparation based on solid-liquid extraction was optimized without using adsorbent for purification. Recoveries were 79.8-109.5% with relative standard deviations (RSDs) of 2.5-9.4% at fortified levels from 0.001 to 0.50mg/kg. The limit of detection (LOD) was 0.3g/kg. Field trials were conducted to explore the dissipation and terminal residue behavior of cymoxanil in grape. Results showed that the half-lives of cymoxanil were from 0.5 to 0.7days. Terminal residues were from below the limit of quantification (LOQ) to 0.363mg/kg. Dietary exposure risk assessment revealed that the risk quotients (RQs) were much less than 1. It was concluded that cymoxanil in grape raised negligible concerns to human health under field conditions. Sixty grape samples from Guangzhou market were found to be free of cymoxanil. The proposed study would provide reference for appropriate use of cymoxanil in grape planting in China.
机译：基于液相色谱 - 串联质谱（LC-MS / MS）的简单快速的方法用于Cymoxanil残留物分析葡萄。优化基于固液萃取的样品制备而不使用吸附剂进行纯化。复苏率为79.8-109.5％，相对标准偏差（RSD）为0.001至0.50mg / kg的强化水平为2.5-9.4％。检测限（LOD）为0.3g / kg。进行现场试验以探讨Cymoxanil在葡萄中的耗散和末端残留行为。结果表明，Cymoxanil的半衰期为0.5至0.7天。终端残留物低于定量限制（LOQ）至0.363mg / kg。膳食暴露风险评估表明，风险标本（RQ）远低于1。得出结论，葡萄中的Cymoxanil在现场条件下向人类健康提出了可忽略不计的担忧。广州市场的六十葡萄样品被发现不含Cymoxanil。该拟议的研究将为中国葡萄种植中的Cymoxanil提供适当使用的参考。

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