在海鲜参考材料中确定技术关键元素,采用感应合的等离子体-双重质谱法
Dominik Wippermann1,2, Alexa Zonderman1,3, Tristan Zimmermann1
1Department Inorganic Environmental Chemistry, Helmholtz-Zentrum Hereon, Institute of Coastal Environmental Chemistry, Max-Planck-Str. 1, 21502, Geesthacht, Germany.
Analytical and bioanalytical chemistry
|December 23, 2023
概括
本研究量化了23种元素,包括稀土元素 (REE) 和技术关键元素 (TCE),在使用ICP-MS/MS的海产品认证参考材料中. 结果为新出现的污染物提供质量分数,有助于对TCE确定方法的验证.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 认证的参考材料 (CRM) 对于精确的生物样本元素分析至关重要.
- 技术关键元素 (TCEs),包括稀土元素 (REEs), (Ga), (Ge), (Nb), (In) 和 (Ta),在各种技术中越来越重要.
- 在海鲜等环境矩阵中精确量化这些元素对于监测和风险评估至关重要.
研究的目的:
- 量化23个元素的质量分数,重点关注四个海鲜CRM中选定的TCE (REEs,Ga,Ge,Nb,In,Ta).
- 评估感应合等离子体双重质谱法 (ICP-MS/MS) 的性能,以准确确定这些元素.
- 为未经认证的元素提供建议的质量分数,包括Ga和In,并提供相关的不确定性.
主要方法:
- 使用ICP-MS/MS.使用四个CRM (BCR-668,NCS ZC73034,NIST SRM 1566a,NIST SRM 2976) 的分析.
- 微波辅助的封闭容器消化,使用HNO3,HCl和H2O2.2的混合物.
- 优化样品质量和微波系统参数以实现最佳性能.
主要成果:
- 成功量化了REEs的回收率在76%至129%之间,以及研究较少的TCE的回收率在83%至127%之间.
- 获得了Ga (1167 μg kg-1) 和In (0.40.8 μg kg-1) 的质量分数,并结合了不确定性.
- 证明了ICP-MS/MS在复杂的生物矩阵中用于确定TCE的适用性.
结论:
- 该研究成功确定了海鲜CRM中选定的TCE的质量分数,有助于了解新出现的污染物.
- 经过验证的ICP-MS/MS方法允许准确确定TCE,支持在海鲜分析中方法验证.
- 提供的数据和方法增强了现有的CRM在涉及生物中的TCE的研究中的实用性.
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