在酸消化后,在积聚的中精确地确定银的银降雨限制因子
Iva Synková1,2, Jan Borovička3,4
1Institute of Geochemistry, Mineralogy and Mineral Resources, Faculty of Science, Charles University in Prague, Albertov 6, 12843, Prague 2, Czech Republic.
Biological trace element research
|April 14, 2025
概括
由于AgCl沉,在中准确地确定银是具有挑战性的. 这项研究比较了中子激活分析和ICP-MS方法,以可靠地量化生物质中的银.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 生物地质化学生物地质化学
背景情况:
- 野生积累了大量的微量元素,包括像银 (Ag) 这样的贵金属.
- 准确量化生物质中的Ag对于了解金属积累和环境监测至关重要.
- 标准分析方法可能受到样本矩阵复杂性的阻碍.
研究的目的:
- 评估不同分析技术的准确性,以确定中的银 (Ag) 质量分数.
- 调查样品消化程序对生物质Ag测定的影响.
- 确定挑战,并提出解决方案,可靠的Ag量化在宏观真菌.
主要方法:
- 非破坏性中子激活分析 (INAA) 和高分辨率感应合等离子体质谱 (HR-ICP-MS) 的比较.
- 使用酸 (HNO3) 的不同消化方法 (热板和微波) 的评估.
- 对多种物种进行了Ag-spiking实验和分析,包括Ag-hyperaccumulator Amanita strobiliformis.
- 使用NIST标准参考材料 (SRM) 进行质量控制.
主要成果:
- 标准的消化程序往往导致不准确的Ag测定,由于不溶性化银 (AgCl) 的沉.
- 扫描电子显微镜 (SEM) 和X射线衍射 (XRD) 证实了AgCl沉.
- 在避免降雨的情况下,INAA和HR-ICP-MS的结果相似.
- 样本中的高化物含量加剧了AgCl沉问题.
结论:
- 在中准确的Ag测定需要仔细考虑潜在的AgCl沉.
- 修改或替代的分析方法可能是必要的可靠的Ag量化在高化物样本.
- 这项研究凸显了复杂生物矩阵中微量元素分析方法验证的重要性.
关键词:
菌的真菌是一种人权高官-ICP-MSMS-MS是什么意思过度积累是一种过度积累.在ICP-OESES中.在INAAAA中,它是最重要的.微波消化是微波消化的一种方式.标准参考材料是标准的参考材料.更多相关视频
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