植物保护产品中隐藏成分的高通量选和定量分析由GC-MS/MS进行
Xiaohui Li1, Chunmei Li2, Simeng Li1
1Key Laboratory of Agro-product Quality and Safety, Institute of Quality Standards & Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, Beijing, China.
Ecotoxicology and environmental safety
|October 14, 2023
概括
一种新方法检测到植物保护产品中的639种隐藏成分. 这种高通量选在聚素配方中发现了一种隐藏的成分,即二甲基,有助于风险评估.
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:
- 植物保护产品中的隐藏成分对公众健康,食品贸易和环境构成风险.
- 准确的检测方法对于识别和量化这些未申报物质至关重要.
研究的目的:
- 开发一种高通量选方法,用于检测PPP中的639种隐藏成分.
- 建立可靠的定性和定量标准,用于在没有标准的情况下初步识别化合物.
- 评估中国在线可用的PPP中隐藏成分的普遍性.
主要方法:
- 在多重反应监测模式下开发使用气体染色学-质谱/质谱 (GC-MS/MS) 的高通量选方法.
- 使用了Shimadzu智能农药数据库,其中包含保留时间转移 (<0.17分钟) 的特定标准和合格者对量化器比率不确定性 (<30%).
- 经验证的方法性能与量化限制 (0.01-0.05 mg/kg),宽线性范围 (R2 ≥0.975) 和可接受的恢复 (62.08%-126.3%).
主要成果:
- 该方法成功选了PPP中639种潜在的隐藏成分.
- 为初步识别缺乏分析标准的化合物,建立了质量标准.
- 对91个PPP样本的分析揭示了一种隐藏的成分,即dimetomorph (1.6g/kg),在一个多素配方中.
结论:
- 开发的GC-MS/MS方法对PPP中隐藏成分的高通量选是有效的.
- 建立的标准允许在没有参考标准的情况下初步识别化合物.
- 该研究强调了监测PPP隐藏成分的重要性,以减轻潜在的风险.
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