使用合树脂和ICP-MS确定海水REEs的揭示方法衍生元件分化:提高精度用于更细的水混合
Michael Julian Haryanto1, Jing Zhang2, Zaskia Alifia3
1Graduate School of Science and Engineering, University of Toyama 930-8555, Toyama, Japan.
Talanta
|January 28, 2025
概括
在海水中溶解的稀土元素 (REEs) 的分析方法可以引入分化. 这项研究使用Lu方法发现光REEs (LREEs) 的偏差,影响地质化学解释.
科学领域:
- 地质化学 地质化学
- 海洋化学 海洋化学
- 分析化学 分析化学
背景情况:
- 溶解稀土元素 (REEs) 是由于它们对环境的敏感性而在地化学研究中至关重要的标记物.
- 使用合树脂和ICP-MS进行海水REE分析可能会引入分析分化,可能导致误解.
- 了解方法衍生的分化对于准确的海洋REE研究至关重要.
研究的目的:
- 为了比较海水REE分析的括号标准和Lu方法.
- 在REE测量中识别和量化方法衍生的分析分数.
- 通过使用认证的参考材料来评估这些方法的准确性.
主要方法:
- 分析了110多个海水样本,其前度时间和ICP-MS运行时间各不相同.
- 为稀土元素量化进行括号标准和Lu方法的比较.
- 使用三个自然参考材料 (NASS-7,SLEW-3,NMIJ7204 A) 进行验证.
主要成果:
- 使用Lu方法观察到轻型REE (LREE) 的偏差超过5%,重型REE (HREE) 的偏差低于5%.
- 这两种方法都与分析的参考材料的认证值有很好的一致性.
- 通过这两种方法量化HREE的短期时间序列是可比的和可靠的.
结论:
- 卢法为LREEs引入了显著的分化,需要在地化学研究中仔细考虑.
- 这两种分析方法对HREEs都准确,使得沿海研究可靠的短期时间序列分析.
- 需要进一步进行高分辨率的空间和时间海洋观测,以提高对海洋生物地球化学循环的理解.
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