Determination of Chlorine in Nine Rock Reference Materials by Isotope Dilution Mass Spectrometry
Determination of Chlorine in Nine Rock Reference Materials by Isotope Dilution Mass Spectrometry
复制标题
同位素稀释质谱法测定九种岩石标准物质中的氯
DOI：
10.1111/j.1751-908x.2006.tb00918.x
复制
发表时间：
2006
影响因子：
3.8
通讯作者：
N. Nakamura
中科院分区：
文献类型：
--
作者：
T. Fujitani;N. Nakamura
介绍了采用负热电离质谱（N-TIMS）同位素稀释技术（ID）测定氯的方法。加入约10 mg硅酸盐样品，用氢氟酸分解，用Ca（OH）2中和后，通过氯化银沉淀分离氯。然后对AgCl的氨溶液进行N-TIMS。岩石参考材料的重复分析，通常是JB-1和JR-1，证明了分析的高质量（Cl的精度为± 1 - 2%）。我们在这里提供了九种火成岩标准物质中最精确的氯浓度数据集，三种玄武岩（JB-1，JB-2，JB-3），两种安山岩（JA-3，AGV-1），两种流纹岩（JR-1，JR-2）和两种花岗闪长岩（JG-3，GSP-1）。测得的氯浓度范围从AGV-1的152 μg g-1到JR-1的1008 μg g-1。我们在这里提出的结果是部分（但不完全）与推荐值，他们是可用的协议。因此，N-TIMS ID技术可用作高精度测定硅酸盐材料中低氯含量的方法。
A procedure for the determination of chlorine by the isotope dilution technique (ID) using negative thermal ionisation mass spectrometry (N‐TIMS) is described. Silicate samples of about 10 mg were spiked and decomposed with hydrofluoric acid, and chlorine was isolated by precipitation of silver chloride after neutralisation with Ca(OH)2. The ammonical solution of AgCl was then subjected to N‐TIMS. Replicate analyses of rock reference materials, typically of JB‐1 and JR‐1, demonstrated the high quality of the analyses (precision for Cl was ± 1‐2%). We present here the most precise data sets of chlorine concentrations in nine igneous rock reference materials, three basalts (JB‐1, JB‐2, JB‐3), two andesites (JA‐3, AGV‐1), two rhyolites (JR‐1, JR‐2) and two granodiorites (JG‐3, GSP‐1). The chlorine concentrations found ranged from 152 μg g‐1 in AGV‐1 to 1008 μg g‐1 in JR‐1. Our results presented here are partly (but not completely) in agreement with recommended values, where they are available. The N‐TIMS ID technique can thus be used as a means of determining low chlorine contents in silicate materials to high precision.
影响因子：
5.3
作者：
Schmidt, MW;Poli, S
通讯作者：
Poli, S