Proposal for an International Molybdenum Isotope Measurement Standard and Data Representation
Proposal for an International Molybdenum Isotope Measurement Standard and Data Representation
复制标题
国际钼同位素测量标准和数据表示的提案
DOI：
10.1111/j.1751-908x.2013.00275.x
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发表时间：
2014
影响因子：
3.8
通讯作者：
Nägler T
中科院分区：
文献类型：
--
作者：
Nägler T
钼同位素在地球科学中的应用日益广泛。它们主要用于研究地球海洋和大气的氧化作用。然而，越来越多的应用领域正在开发，如岩浆和热液过程，行星科学或环境污染的跟踪。在这里，我们提出了在质量依赖同位素分馏研究中统一表示Mo同位素比率的建议。我们建议将NIST SRM 3134的δ98/95Mo定义为+0.25‰。其基本原理是，绝大多数已发表的数据都是相对于相似但不相同的参考材料呈现的，并且都比NIST SRM 3134略轻。我们提出的数据表示允许将几乎所有旧数据与未来工作直接进行一阶比较，同时参考国际测量标准。特别是，典型δ98/95Mo值，如海水+2.3‰和海洋Fe-Mn沉淀- 0.7‰，可以保留以供讨论。由于近年来研究表明海洋钼同位素特征是均匀的，建议采用IAPSO海水标准或其他开放海水样品作为二次测量标准，确定δ98/95Mo值为+2.34±0.10‰（2s）。
Molybdenum isotopes are increasingly widely applied in Earth Sciences. They are primarily used to investigate the oxygenation of Earth's ocean and atmosphere. However, more and more fields of application are being developed, such as magmatic and hydrothermal processes, planetary sciences or the tracking of environmental pollution. Here, we present a proposal for a unifying presentation of Mo isotope ratios in the studies of mass‐dependent isotope fractionation. We suggest that the δ98/95Mo of the NIST SRM 3134 be defined as +0.25‰. The rationale is that the vast majority of published data are presented relative to reference materials that are similar, but not identical, and that are all slightly lighter than NIST SRM 3134. Our proposed data presentation allows a direct first‐order comparison of almost all old data with future work while referring to an international measurement standard. In particular, canonical δ98/95Mo values such as +2.3‰ for seawater and −0.7‰ for marine Fe–Mn precipitates can be kept for discussion. As recent publications show that the ocean molybdenum isotope signature is homogeneous, the IAPSO ocean water standard or any other open ocean water sample is suggested as a secondary measurement standard, with a defined δ98/95Mo value of +2.34 ± 0.10‰ (2s).
影响因子：
3.4
作者：
Goldberg, Tatiana;Gordon, Gwyneth;Rehkaemper, Mark
通讯作者：
Rehkaemper, Mark
影响因子：
5
作者：
Young, ED;Galy, A;Nagahara, H
通讯作者：
Nagahara, H