在土壤中确定选定的基于加多的对比剂:方法验证和应用
A F Roig-Navarro1, F Soria-Prieto2, E Pitarch2
1Environmental and Public Health Analytical Chemistry, Research Institute for Pesticides and Water, Universitat Jaume I, Avgda. Sos Baynat, S/N, 12071, Castelló, Spain. roig@uji.es.
Analytical and bioanalytical chemistry
|February 11, 2026
概括
由于回收水灌,对土壤中加多基对比剂 (GBCA) 的环境监测至关重要. 这项研究开发了一种用于量化土壤中的GBCA的新方法,揭示了它们在灌地区的积累.
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:
- 在农业中回收用水的使用可能会使土壤受到诸如加多基对比剂 (GBCAs) 等持久化合物的污染.
- 通过废水处理,GBCA被很差地去除,导致环境释放,并在土壤和作物中潜在积累.
- 需要可靠的分析方法来量化土壤矩阵中的GBCAs.
研究的目的:
- 开发和验证一种可靠的分析方法,用于在粘土土中确定GBCAs (gadoteric acid,gadoteridol,gadobutrol).
- 评估用回收水灌的土壤中GBCAs的环境积累情况.
- 为监测GBCAs的环境命运和潜在的食物链转移提供一个工具.
主要方法:
- 开发和验证与感应合等离子质谱法 (IC-ICP-MS) 结合的离子染色学方法.
- 优化移动相和化条件,以在7.5分钟内有效分离GBCAs.
- 提取方案的评估:轻度酸用于生物可利用分数和性氧化用于定量回收.
主要成果:
- 经过验证的IC-ICP-MS方法实现了低检测极限 (LOD < 2 ng g-1) 和量化 (LOQ < 5 ng g-1).
- 这项研究首次成功量化了农田和市政公园用回收水灌的粘土土中的GBCAs.
- 性提取证明了泥炭基板中的加多特酸的高回收率 (80%),证实了灌栽培试验中的GBCA积累.
结论:
- 建立了一种可靠和敏感的方法来确定土壤中的GBCA,从而实现了准确的环境监测.
- 这些发现证实了GBCA在用回收或强化水灌的土壤和泥炭基板中的积累.
- 强大的分析工作流程对于评估GBCA的环境影响及其潜在转移到食物链至关重要.
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