Determination of trace halogens in rock samples by radiochemical neutron activation analysis coupled with the k0-standardization method.
Determination of trace halogens in rock samples by radiochemical neutron activation analysis coupled with the k0-standardization method.
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DOI：
10.1016/j.aca.2006.10.032
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发表时间：
2007-02
影响因子：
6.2
通讯作者：
H. Ozaki;M. Ebihara
中科院分区：
文献类型：
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作者：
H. Ozaki;M. Ebihara
将放射化学中子活化分析与 k0 标准化方法（k0-RNAA 方法）结合应用于硅酸盐岩石样品中，同时测定痕量卤素（Cl、Br 和 I）。采用k0-RNAA方法对地质标准岩石和陨石样品进行的分析结果与同组实验中常规对比方法的分析结果一致，表明k0-RNAA方法与常规方法一样可靠。除极少数情况外，我们对这些样本的数据与其文献值非常一致。对于典型的地质和陨石样品，在当前实验条件下计算出的 Cl 和 Br 的检测限足够低，但 I 的检测限则不够低。 k0-RNAA 方法与更长的中子照射相结合，预计会对这些样品中包括 I 在内的卤素产生令人满意的低检测限。
Radiochemical neutron activation analysis coupled with the k0-standardization method (k0-RNAA method) was applied to silicate rock samples for the simultaneous determination of trace halogens (Cl, Br and I). Analytical results obtained by the k0-RNAA method for geological standard rocks and meteorite samples agreed with those determined by the conventional comparison method conducted in the same set of experiments, suggesting that the k0-RNAA method is as reliable as the conventional method. Our data for these samples are in good agreement with their literature values except for rare cases. Detection limits calculated under the present experimental condition are sufficiently low for Cl and Br but not for I for typical geologic and meteoritic samples. The k0-RNAA method coupled with longer neutron-irradiation is expected to yield satisfactorily low detection limits for halogens including I in these samples.