Determination of In and Sn Mass Fractions in Sixteen Geological Reference Materials by Isotope Dilution MC‐ICP‐MS
Determination of In and Sn Mass Fractions in Sixteen Geological Reference Materials by Isotope Dilution MC‐ICP‐MS
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DOI：
10.1111/ggr.12211
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发表时间：
2018-09
影响因子：
3.8
通讯作者：
M. Kirchenbaur;A. Heuser;A. Bragagni;F. Wombacher
中科院分区：
文献类型：
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作者：
M. Kirchenbaur;A. Heuser;A. Bragagni;F. Wombacher
测定了玄武岩/镁铁质(BCR-2、Be-N、BHVO-1、BHVO-2、BIR-1、Okum、W-2、WS-E)、超镁铁质(DTS-2b、MUH-1、PCC-1、UB-N)和长英质/沉积标准物质(AGV-2、JA-1、SdAR-M2、SdAR-H1)中锡和铟的质量分数。进行了广泛的消解和离子交换分离试验，以提供高的产率(锡的产率为90%，铟的产率为85%)，低的程序空白总量(锡为~1 ng，In的为3pg)，以及各种硅酸盐样品中感兴趣的元素的低分析不确定度。对锡铟质量分数的重复分析(n=2-13)给出的综合测量不确定度(2U)一般为<；3%，并与文献数据(如果有)一致。我们提供了第一个高精度的参考物质OKUM(32.1±1.5 ng g−1)，DTS-2b(2.0 3±0.2 5 ng g−1)，MUH-1(6.44±0.30 ng g−1)和PCC-1(3.5 5±0.35 ng g−1)以及第一个锡数据MUH-1(0.057±0.010μg−1)和DTS-2b(0.623±0.018μg−1)。
Mass fractions of Sn and In were determined in sixteen geological reference materials including basaltic/mafic (BCR‐2, BE‐N, BHVO‐1, BHVO‐2, BIR‐1, OKUM, W‐2, WS‐E), ultramafic (DTS‐2b, MUH‐1, PCC‐1, UB‐N) and felsic/sedimentary reference materials (AGV‐2, JA‐1, SdAR‐M2, SdAR‐H1). Extensive digestion and ion exchange separation tests were carried out in order to provide high yields (> 90% for Sn, > 85% for In), low total procedural blanks (~ 1 ng for Sn, < 3 pg for In) and low analytical uncertainties for the elements of interest in a variety of silicate sample matrices. Replicate analyses (n = 2–13) of Sn–In mass fractions gave combined measurement uncertainties (2u) that were generally < 3% and in agreement with literature data, where available. We present the first high‐precision In data for reference materials OKUM (32.1 ± 1.5 ng g−1), DTS‐2b (2.03 ± 0.25 ng g−1), MUH‐1 (6.44 ± 0.30 ng g−1) and PCC‐1 (3.55 ± 0.35 ng g−1) as well as the first Sn data for MUH‐1 (0.057 ± 0.010 μg g−1) and DTS‐2b (0.623 ± 0.018 μg g−1).