Scholarlink

<p>Given the significant isotopic information in nature, magnesium (Mg) isotopes have played a pivotal role in elucidating the underlying mechanisms of environmental and geological processes. Along with the advancement of multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS), the application of the standard-sample-bracketing (SSB) method, especially the recently developed double-spike (DS) method in Mg isotopes, has significantly enhanced precision to levels as low as ±0.03‰ (2SD). This review primarily focuses on the comparative analysis of the above two methods, with special attention given to the DS method and its application in investigating intricate lithospheric processes with subtle Mg isotope fractionations. We first introduce the development of Mg isotopic analysis, followed by a detailed description of the basic principles of the SSB and DS methods. Subsequently, a comparative discussion of these two approaches is presented to assist researchers in choosing the preferred strategy for specific natural samples. Furthermore, we carefully discuss the more precise scales of equilibrium inter-mineral Mg isotopic fractionations through the DS method, emphasizing that with improved precision, a broader range of applications may emerge. This review ends with our insights and perspectives on this compelling topic, aiming to provide guidelines for advancing Mg isotopic analysis and inspiring researchers to explore various geo-environmental phenomena.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A comparative review of magnesium isotope analysis methods for emerging geological applications: Double-spike vs. standard-sample-bracketing

  • 期刊论文

  • 发表日期：

    2025年3月10日

查看全文
  • Yi-Bo Zhao,
  • Wen-Ning Lu,
  • Jian-Bing Xu,
  • Ming-Xing Ling

摘要

Given the significant isotopic information in nature, magnesium (Mg) isotopes have played a pivotal role in elucidating the underlying mechanisms of environmental and geological processes. Along with the advancement of multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS), the application of the standard-sample-bracketing (SSB) method, especially the recently developed double-spike (DS) method in Mg isotopes, has significantly enhanced precision to levels as low as ±0.03‰ (2SD). This review primarily focuses on the comparative analysis of the above two methods, with special attention given to the DS method and its application in investigating intricate lithospheric processes with subtle Mg isotope fractionations. We first introduce the development of Mg isotopic analysis, followed by a detailed description of the basic principles of the SSB and DS methods. Subsequently, a comparative discussion of these two approaches is presented to assist researchers in choosing the preferred strategy for specific natural samples. Furthermore, we carefully discuss the more precise scales of equilibrium inter-mineral Mg isotopic fractionations through the DS method, emphasizing that with improved precision, a broader range of applications may emerge. This review ends with our insights and perspectives on this compelling topic, aiming to provide guidelines for advancing Mg isotopic analysis and inspiring researchers to explore various geo-environmental phenomena.