桌面葡萄藤中的双林残留物:优化方法,消耗和去除葡萄和葡萄叶中的残留物
Saleh S Alhewairini1, Rania M Abd El-Hamid2, Nevein S Ahmed2
1Department of Plant Protection, College of Agriculture and Food, Qassim University, P.O. Box 6622, Buraydah 51452, Saudi Arabia.
Plants (Basel, Switzerland)
|June 27, 2024
概括
这项研究优化了QuEChERS方法用于葡萄和叶子中的双氨酸残留分析. 洗葡萄有效地减少了双氨酸残留物,以达到最大残留量限制 (MRL) 水平.
科学领域:
- 农业化学 农业化学
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 农药残留物分析对于食品安全和监管合规性至关重要.
- 双丁是葡萄种植中广泛使用的杀虫剂,需要精确的残留物监测.
- 需要优化分析方法,以确保符合欧盟 (EU) 的最大残留量限制 (MRL) 指南.
研究的目的:
- 适应和验证QuEChERS方法来确定葡萄和葡萄叶中的双氨酸残留物.
- 在葡萄园环境中研究双林的消散动力学.
- 评估收获后洗处理对去除双氨酸残留物的有效性.
主要方法:
- QuEChERS (快速,轻松,廉价,有效,坚固和安全) 方法优化提取和清理.
- 根据欧盟指南验证方法,评估准确性,精度,线性和矩阵效应.
- 在监督下进行实地试验,研究双林的消散,并计算消散因子 (k).
- 使用自来水 (运行和浸泡) 进行实验室洗实验,以评估葡萄和叶子的残留物去除.
主要成果:
- 优化的QuEChERS方法显示出高准确度 (葡萄98.8%,叶子93.5%) 和精度.
- 实现了低量化限值 (LOQs) (2微克/千克葡萄,20微克/千克叶子).
- 通过5分钟的洗处理,可以有效地从葡萄中去除双氨酸残留物,达到欧盟的0.3mg/kg的MRL.
- 洗处理在去除葡萄叶的残留物方面效率较低,而不是将其降低到MRL水平.
结论:
- 经过验证的QuEChERS方法适用于葡萄和葡萄叶中的双林残留分析.
- 简单地用自来水冲洗,可以显著减少葡萄上的双氨酸残留物,以符合MRL.
- 可能需要进一步的研究来开发有效的葡萄叶残留物清除策略.
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