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在LA-MC-ICP-MS中准备矩阵匹配的参考材料的快速烧结方法 - - 哈夫的一个例子

Nan Lv¹, Zhian Bao¹, Kaiyun Chen¹

¹State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an 710069, China.

Analytical chemistry

|December 26, 2024

概括

一种新的快速热压 (FHP) 方法有效地创建了同质的Hf同位素参考材料,用于激光切除 (LA-) MC-ICP-MS分析. 这种技术可以确保在矿物质中,如石和石中,准确地进行Hf同位素测量.

科学领域:

地质化学地质化学
分析化学分析化学
材料科学材料科学材料科学

背景情况:

激光除多采集器感应合等离子体质谱学 (LA-MC-ICP-MS) 分析中的矩阵效应可能导致不准确的Hf同位素比率.
准确的现场微分析需要矩阵匹配的参考材料来纠正这些偏差.
准备参考材料的传统方法往往耗时且昂贵.

研究的目的:

引入和验证一种新的快速热压 (FHP) 烧结方法,用于生产Hf同位素参考材料.
为了证明FHP技术的效率和有效性,在创建密集,均的参考材料进行实地分析.
评估FHP烧结的卡西泰铁和鲁作为Hf同位素测定参考材料的适用性.

主要方法:

开发快速热压 (FHP) 烧结技术,以制备参考材料.
烧结温度的优化,以获得密集的结构和均的Hf同位素组成.
使用秒激光除多采集器感应联等离子体质谱法 (LA-MC-ICP-MS) 分析FHP烧结的石和鲁中的Hf同位素组成.

主要成果:

在FHP方法快速生产密集和均的Hf同位素参考材料.
在FHP烧结样本上,用Femtosecond LA-MC-ICP-MS确定的Hf同位素组成与传统的MC-ICP-MS结果一致.
同质性测试证实了烧结样品片之间的最小变化,表明它们作为参考材料的可靠性.

结论:

FHP烧结方法是一种高效,具有成本效益和快速的方法,用于合成用于Hf同位素分析的矩阵匹配参考材料.
用FHP烧结的铁石和鲁具有很大的潜力,可以作为LA-MC-ICP-MS的可靠参考材料.
这种技术对合成广泛的同位素矩阵匹配参考材料具有前景.

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