增加极地有机化学品综合样本的处理方法的化学覆盖,准确性和可重复性
Matteo Baglietto1, Henry MacKeown1, Barbara Benedetti1
1Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146, Genoa, Italy.
Analytical and bioanalytical chemistry
|February 1, 2025
概括
对于被动采样器而言,一种新的干转移方法显著改善了海水中极性有机化合物的回收. 这种标准化的方法提高了新出现的污染物的检测,使被动采样更适合监管环境监测.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 由于缺乏标准化处理协议,被动采样在监管环境研究中未得到充分利用.
- 现有的方法通常需要定制的协议,限制了跨研究的可复制性和可比性.
- 标准化对于扩大被动采样技术的监管应用至关重要.
研究的目的:
- 评估吸附剂转移方法对极性有机化合物的回收和矩阵效应的影响,使用海水中的被动采样.
- 为了比较标准的"湿转移"方法与不太常见的"干转移"方法.
- 确定一个优化的被动采样处理协议,以加强新出现的污染物的检测.
主要方法:
- 在海水中部署了六个相同的极地有机化学整合样本.
- 使用超纯水的"湿转移"与"干转移"方法进行了比较.
- 38种目标化合物 (杀虫剂,药品,紫外线过器等) 的回收和矩阵效应. 进行了评估.
主要成果:
- "干转移"方法产生了更高的回收率,特别是对于更多的极性化合物,而不会对矩阵效应产生负面影响 (40-130%).
- 对未添加的提取物进行分析,发现了可以量化的 perfluorooctanoic 酸,紫外线过器,卡巴马西平,迪克洛芬雅克和三桑.
- 仅使用"干转移"方法检测了10种分析物质,这突显了其对极地污染物的敏感性.
结论:
- "干转移"方法为处理被动样本提供了更标准化和可重复的策略.
- 这种精细的方法提高了环境样本中更广泛的新出现污染物的检测和量化.
- 改进的协议有助于在监管环境监测中更广泛地采用被动采样.
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