Micro-powder collecting technique for stable isotope analysis of carbonates
Micro-powder collecting technique for stable isotope analysis of carbonates
复制标题
用于碳酸盐稳定同位素分析的微粉收集技术
DOI：
10.1002/rcm.4980
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发表时间：
2011
影响因子：
2
通讯作者：
S.
中科院分区：
文献类型：
--
作者：
Sakai;S.
微铣削技术是地质材料同位素组成分析的常用技术，它提高了样品采集分析的空间分辨率。但是，磨矿样品的回收率仍然是一个问题。我们建造了一个简单的装置，包括一个真空泵，一个烧结金属过滤器，导电橡胶塞和一根不锈钢管，用于将研磨后的粉末输送到反应瓶中。在我们对碳酸盐粉末的初步实验中，我们实现了5 ~ 100µg碳酸盐的快速回收，回收率很高（>90%）。该技术缩短了样品制备时间，提高了回收率，使样品数量均匀，从而提高了分析的再现性。版权所有©2011 John Wiley & Sons， Ltd
Micromilling is a conventional technique used in the analysis of the isotopic composition of geological materials, which improves the spatial resolution of sample collection for analysis. However, a problem still remains concerning the recovery ratio of the milled sample. We constructed a simple apparatus consisting of a vacuum pump, a sintered metal filter, electrically conductive rubber stopper and a stainless steel tube for transferring the milled powder into a reaction vial. In our preliminary experiments on carbonate powder, we achieved a rapid recovery of 5 to 100 µg of carbonate with a high recovery ratio (>90%). This technique shortens the sample preparation time, improves the recovery ratio, and homogenizes the sample quantity, which, in turn, improves the analytical reproducibility. Copyright © 2011 John Wiley & Sons, Ltd.