在使用磁性聚合物进行预处理后,ICP-MS对大气颗粒和雪茄烟中的稀土微量元素分析
Xin Zhou1, Lingyun Gui1, Ziyang Lu1
1Department of Chemistry, Wuhan University, Wuhan, 430072, China.
Analytica chimica acta
|September 1, 2024
概括
这项研究开发了一种磁性固相提取方法,与ICP-MS相结合,用于检测空气颗粒等复杂样品中的稀土微量元素. 这种新方法具有很高的灵敏度和选择性,对于评估吸入金属的健康风险至关重要.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 吸入大气颗粒和烟雾是重金属暴露的重要途径.
- 在微粒和烟雾等复杂矩阵中分析微金属存在分析挑战.
- 磁性固相提取 (MSPE) 与感应合等离子体质谱学 (ICP-MS) 结合,提供了一个有前途的分析策略.
研究的目的:
- 开发和验证一种新的MSPE方法,用于敏感地确定稀土微量元素 (REE).
- 评估该方法在具有挑战性的环境样本 (如大气颗粒和雪茄烟) 中分析可再生能源的适用性.
- 为评估吸入金属的潜在健康风险提供一种有效的方法.
主要方法:
- 使用Fe3O4纳米粒子和酸修饰剂合成磁性聚合物.
- 优化MSPE条件,以有效地提取和预先缩REEs.
- 使用ICP-MS检测REEs.
主要成果:
- 合成的磁性吸附剂对REEs具有很高的选择性,具有很好的重复使用性 (>45个周期) 和化学稳定性.
- 在MSPE-ICP-MS方法中,15个REE实现了高丰富系数 (300) 和低检测极限 (0.0010.2 ng L-1).
- 成功分析大气颗粒物 (TSP,PM2.5,PM10) 中的REEs,回收率高 (86.3107%),表明对矩阵干扰的强度. 在雪茄烟中没有检测到REEs.
结论:
- 开发的MSPE-ICP-MS方法对于复杂矩阵中的REEs的微量分析非常有效.
- 功能化磁性聚合物显示出在吸入的环境样本中监测各种重金属的巨大潜力.
- 这一策略有助于评估颗粒和烟雾中存在的金属所带来的健康风险.
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