Magnesium Isotopic Homogeneity of GSR-1 and RGM-2: Two Potential Standards for Mg Isotope Analysis of Low MgO Felsic Rocks
Magnesium Isotopic Homogeneity of GSR-1 and RGM-2: Two Potential Standards for Mg Isotope Analysis of Low MgO Felsic Rocks
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GSR-1 和 RGM-2 的镁同位素均质性：低 MgO 长英质岩石镁同位素分析的两种潜在标准
DOI：
10.1007/s12583-019-1261-6
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发表时间：
2020-01
影响因子：
3.3
通讯作者：
Chunlei Zong
中科院分区：
文献类型：
--
作者：
Lu Chen;Zhian Bao;Honglin Yuan;Kaiyun Chen;Chunlei Zong
在样品制备和质谱分析中，样品溶解、柱化学、浓度失配和基质效应在Mg同位素分析期间具有引入分析伪影的显著潜力。基于长英质岩石中MgO含量低和不需要的基质元素，开发表征良好的长英质标准品对于减少实验室间质量偏差、评估数据准确性和促进不同实验室化学分离程序的比较至关重要。在这项工作中，均匀性和长期稳定性的两个长英质岩石标准，GSR-1和RGM-2，由于其低MgO含量进行了评价。此外，使用具有掺杂基质元素的合成溶液，使用多收集器电感耦合等离子体质谱法来评估潜在的Mg同位素分析伪影。通过12个月的重复测量，评估了GSR-1和RGM-2中Mg同位素组成的准确度和精密度。长期试验表明，两个低MgO长英质岩石（GSR-1和RGM-2）的Mg同位素组成批次间比较均一，可以作为低MgO标准物质用于Mg同位素分析的准确性评价。GSR-1和RGM-2的Mg同位素组成（δ 26 Mg）分别为-0.223‰±0.053‰（2s，n=50）和-0.184‰±0.058‰（2s，n=50）。
In sample preparation and mass spectrometry analysis, sample dissolution, column chemistry, concentration mismatches, and matrix effects have significant potential for introducing analytical artifacts during Mg isotope analysis. Based on the low MgO content and undesirable matrix elements in felsic rocks, the development of well-characterized felsic standards is essential to reduce inter-laboratory mass bias, enable the assessment of data accuracy, and facilitate the comparison of chemical separation procedures in different laboratories. In this work, the homogeneity and long-term stability of two felsic rock standards, GSR-1 and RGM-2, were evaluated due to their low MgO contents. Furthermore, synthetic solutions with doped matrix elements were used to evaluate potential Mg isotope analytical artifacts using multi-collector inductively coupled plasma mass spectrometry. The accuracy and precision of Mg isotopic compositions in GSR-1 and RGM-2 were assessed by repeated measurements over twelve months. The long-term tests show that the Mg isotopic compositions of the two low MgO felsic rocks (GSR-1 and RGM-2) are homogenous among batches and can be used as low MgO reference materials for accuracy assessments of Mg isotopic analyses. The Mg isotopic compositions (δ26Mg) of GSR-1 and RGM-2 were marked as -0.223‰±0.053‰ (2s,n=50) and -0.184‰±0.058‰ (2s,n=50) respectively.
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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
影响因子：
3.4
作者：
Tu, Xianglin;Wang, Guiqin;Liu, Ying;Yang, Yueheng;Xie, Liewen;Liang, Xirong;Lin, Yangting
通讯作者：
Lin, Yangting
影响因子：
3.7
作者：
F. Teng;Q. Yin;C. Ullmann;R. Chakrabarti;Philip A. E. Pogge von Strandmann;Wei Yang;Wangye Li;S. Ke;F. Sedaghatpour;J. Wimpenny;A. Meixner;R. Romer;U. Wiechert;S. Jacobsen
通讯作者：
F. Teng;Q. Yin;C. Ullmann;R. Chakrabarti;Philip A. E. Pogge von Strandmann;Wei Yang;Wangye Li;S. Ke;F. Sedaghatpour;J. Wimpenny;A. Meixner;R. Romer;U. Wiechert;S. Jacobsen
影响因子：
5
作者：
Shui‐Jiong Wang;F. Teng;J. Scott
通讯作者：
Shui‐Jiong Wang;F. Teng;J. Scott
影响因子：
3.8
作者：
F. Teng;Wangye Li;S. Ke;Wei Yang;Sheng‐Ao Liu;F. Sedaghatpour;Shui‐Jiong Wang;Kang-Jun Huang-
通讯作者：
F. Teng;Wangye Li;S. Ke;Wei Yang;Sheng‐Ao Liu;F. Sedaghatpour;Shui‐Jiong Wang;Kang-Jun Huang-
影响因子：
3.3
作者：
Honglin Yuan;X. Liu;Z. Bao;Kaiyun Chen;C. Zong
通讯作者：
Honglin Yuan;X. Liu;Z. Bao;Kaiyun Chen;C. Zong