Separation of magnesium from meteorites and terrestrial silicate rocks for high-precision isotopic analysis using multiple collector-inductively coupled plasma-mass spectrometry
Separation of magnesium from meteorites and terrestrial silicate rocks for high-precision isotopic analysis using multiple collector-inductively coupled plasma-mass spectrometry
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使用多收集器-电感耦合等离子体质谱法从陨石和陆地硅酸盐岩石中分离镁，进行高精度同位素分析
DOI：
10.1039/c0ja00275e
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发表时间：
2011-09
影响因子：
3.4
通讯作者：
Lin, Yangting
中科院分区：
文献类型：
--
作者：
Tu, Xianglin;Wang, Guiqin;Liu, Ying;Yang, Yueheng;Xie, Liewen;Liang, Xirong;Lin, Yangting
我们报告了一个改进的程序分离镁和铝从陨石和陆地火成岩高精度分析镁同位素多收集电感耦合等离子体质谱。分离过程在填充有AG 50 W-X12树脂的单离子交换柱中进行，并且Mg用1 M HNO 3洗脱，随后Al用4 M HNO 3洗脱。改进后的方法有效地去除了大部分基体元素（Ni、Co和Cu除外），Mg的回收率> 99%。镍，钴，铜轴承模拟解决方案的测量显示没有检测到的基质效应。然而，测试运行证明在色谱过程中存在显著的质量依赖性分馏;因此，需要较高的Mg回收率（>99%），以将偏差限制在0.05‰以下。此外，对浓度范围较宽的Mg标准溶液的分析表明，浓度为0.3-2.5 μg ml− 1 Mg的样品相对于浓度为1 μg ml− 1 Mg的Mg标准溶液的偏差可忽略不计。总程序库小于2 ng。通过对5种纯镁标准溶液的分析，仪器测量镁同位素的长期重复性δ 25 Mg为±0.05‰，δ 26 Mg为±0.10‰，δ 26 Mg为±0.06‰ *（2SD，n = 211）。对3种辉长岩和7种火成岩标准的分析表明，前者δ 26 Mg（DSM 3）的范围为0.02‰ ~ 0.30‰，后者为0.03‰ ~ 0.30‰。该方法简单易行。
We report a modified procedure for separating Mg and Al from meteorites and terrestrial igneous rocks for high-precision analysis of Mg isotopes with multiple collector-inductively coupled plasma-mass spectrometry. The separating procedure was carried out in a single ion-exchange column filled with AG50W-X12 resin, and Mg was eluted with 1 M HNO3, followed by Al eluted with 4M HNO3. The modified procedure efficiently eliminates most matrix elements (except for Ni, Co, and Cu) with a recovery yield of Mg > 99%. Measurements of Ni-, Co-, and Cu-bearing simulation solutions revealed no detectable matrix effects. However, test runs demonstrated significant mass-dependent fractionation during the chromatographic process; consequently, a high recovery yield of Mg (>99%) is required to limit the deviation to less than 0.05‰. Furthermore, analysis of Mg standard solution with a wide range of concentrations demonstrated negligible deviation for samples with concentrations of 0.3–2.5 μg ml−1Mg relative to Mg standard solution concentrations of 1 μg ml−1Mg. The total procedure bank is less than 2 ng. The long-term reproducibility of instrumental measurements of Mg isotopes is ±0.05‰ for δ25Mg, ±0.10‰ for δ26Mg, and ±0.06‰ for δ26Mg* (2 SD, n = 211), based on analyzing five pure Mg standard solutions. Analysis of three chondrites and seven igneous rock standards showed ranges of δ26Mg(DSM3) from 0.02‰ to 0.30‰ for the former and from 0.03‰ to 0.30‰ for the latter. This method is simple and actionable.
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影响因子：
5.3
作者：
P. V. Strandmann;K. Burton;R. James;P. Calsteren;S. Gíslason;B. Sigfússon
通讯作者：
P. V. Strandmann;K. Burton;R. James;P. Calsteren;S. Gíslason;B. Sigfússon
影响因子：
5.3
作者：
E. Tipper;A. Galy;J. Gaillardet;M. Bickle;H. Elderfield;E. A. Carder
通讯作者：
E. Tipper;A. Galy;J. Gaillardet;M. Bickle;H. Elderfield;E. A. Carder
影响因子：
5.3
作者：
M. Schiller;M. Handler;J. Baker
通讯作者：
M. Schiller;M. Handler;J. Baker
影响因子：
5.3
作者：
Galy, A;Bar-Matthews, M;O'Nions, RK
通讯作者：
O'Nions, RK
影响因子：
3.4
作者：
F. Wombacher;A. Eisenhauer;A. Heuser;S. Weyer
通讯作者：
F. Wombacher;A. Eisenhauer;A. Heuser;S. Weyer