通过同位素编码衍生结合超高性能液体染色学-并联质谱法来确定五种基化物
Zenghui Xu1, Zhihao Lu1, Shuiqiang Yu1
1Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu 273165, China.
Journal of hazardous materials
|May 29, 2025
概括
一种新方法准确地测量了食品和环境样本中的有毒基化物. 这种同位素编码的衍生技术改善了检测极限,并减少了用于可靠分析的干扰.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 食品安全 食品安全
背景情况:
- 基氨酸在农业和军事应用中广泛使用.
- 它们的毒性和在食物链中积累的潜力引发了环境和健康方面的担忧.
- 准确的量化方法对于监测和风险评估至关重要.
研究的目的:
- 开发一种新型的同位素编码衍生物化 (ICD) 方法,用于精确量化基.
- 提高检测极限,并尽量减少环境和食品样本中的矩阵效应.
- 通过使用超高性能液体染色学-并联质谱法 (UHPLC-MS/MS) 验证该方法的有效性.
主要方法:
- 开发一种同位素编码的衍生物化 (ICD) 试剂:4-(N-甲基胺) -甲.
- 应用ICD方法与UHPLC-MS/MS相结合,用于分析五种基化物.
- 验证该方法的灵敏度,精度和矩阵效应消除.
主要成果:
- ICD方法显著改善了基化的检测极限 (0.0080.033μg/L).
- 实现了高精度,相对标准偏差始终低于3%.
- 试剂有效地减轻了矩阵效应,确保了可靠的量化.
- 在新鲜中检测到的二甲基氨酸度为20.925.1μg/kg.
结论:
- 开发的ICD方法为基氨酸分析提供了一种敏感而强大的方法.
- 该方法适用于复杂的环境和食品矩阵中的精确量化.
- 这些发现有助于在食品安全和环境研究中改善对这些有毒化合物的监测.
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