Precise determination of REE for sedimentary reference rocks issued by the Geological Survey of Japan
Precise determination of REE for sedimentary reference rocks issued by the Geological Survey of Japan
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DOI：
10.2343/geochemj.39.289
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发表时间：
2005-01-01
影响因子：
0.8
通讯作者：
Adachi, M
中科院分区：
文献类型：
--
作者：
Yamamoto, K;Yamashita, F;Adachi, M
为了获得日本地质调查局发布的沉积岩标准样品（JSd-1，-2，JSI-1，-2，JLk-1）中稀土元素的精确组成，采用酸溶（HF-HClO 4）和碳酸盐熔融（Na 2CO 3-H3 BO 3）两种方法，采用电感耦合等离子体质谱法（ICP-MS）分析了这些样品的稀土元素组成。以JB-1a和BCR-1为例，采用相同的分析方法，评价了这两种方法的分析精密度.这两个参考岩石的分析显示出良好的重现性和接近的协议，除了JB-1a和Tm在BCR-1的Ho汇编值。JB-1a和BCR-1汇编值的CI归一化REE模式分别显示Ho和Tm的偏离，从平滑模式。因此，这些元素的编译值可能有些错误。
In order to obtain precise rare earth element (REE) compositions of sedimentary reference rocks issued by the Geological Survey of Japan (JSd-1, -2, JSI-1, -2, JLk-1), we analyzed their REEs by inductively-coupled plasma mass spectrometry (ICP-MS) using methods employing both acid digestion (HF-HClO4) and carbonate fusion (Na2CO3-H3BO3). Analytical precision of these methods was estimated by analyzing JB-1 a and BCR-1 with the same procedure. Analyses of these two reference rocks show good reproducibility and close agreement with compilation values, except for Ho in JB-1 a and Tm in BCR-1. CI-normalized REE patterns of JB-1a and BCR-1 compilation values show deviations for Ho and Tm, respectively, from the smooth patterns. Therefore, the compilation values of those elements may be somewhat in error.