评估LA-ICP-MS和基于消化的ICP-MS方法,用于确定页岩油及其固体废物的微量元素
Dan Yang1, Kristel Tanilas1, Alar Konist1
1Department of Energy Technology, Tallinn University of Technology, 19086, Tallinn, Estonia.
Talanta
|May 18, 2025
概括
与其他方法相比,在复杂的页岩阵列中,诱导合等离子体质谱法 (LA-ICP-MS) 为微量元素量化提供了更高的准确性. 这种技术在页岩油行业的资源回收和环境评估方面显示出前景.
科学领域:
- 分析化学 分析化学
- 地质化学 地质化学
- 环境科学 环境科学
背景情况:
- 在石油页岩及其固体废物等复杂矩阵中量化微量元素在分析上具有挑战性.
- 精确的元素分析对于资源回收和页岩油行业的环境风险评估至关重要.
研究的目的:
- 为了比较7种分析方法在页岩和固体废物中量化19种微量元素的性能.
- 确定减轻矩阵效应并实现精确的微量元素量化最有效的方法.
主要方法:
- 评估的矩阵匹配和矩阵独立的激光除感应合等离子体质谱 (LA-ICP-MS).
- 评估了传统的基于溶液的感应合血质谱法 (ICP-MS),使用了三种不同的消化协议.
- 使用经过认证的参考材料和实际的页岩样本验证的方法.
主要成果:
- 使用玻璃酸标准的矩阵匹配LA-ICP-MS显示出卓越的分析性能,有效地减轻矩阵效应.
- 这种方法在大多数元素中实现了高精度 (回收率在±15%) 和精度 (变量系数≤5%).
- 传统的ICP-MS方法在某些元素的准确性和一致性方面存在局限性,特别是在复杂的灰矩阵中.
结论:
- 矩阵匹配的LA-ICP-MS是一个有前途的工具,用于快速准确地量化页岩油及其固体废物的微量元素.
- 这些发现突出了复杂地质材料的各种分析技术的优点和局限性.
- 这项研究支持在页岩油行业改善资源回收和环境风险评估.
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