Precise determination of iridium by neutron activation analysis coupled with internal standard method
Precise determination of iridium by neutron activation analysis coupled with internal standard method
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DOI：
10.1007/s10967-020-07152-2
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发表时间：
2020-06-01
影响因子：
1.6
通讯作者：
Sekimoto, Shun
中科院分区：
文献类型：
--
作者：
Miura, Tsutomu;Iinuma, Yuto;Sekimoto, Shun
采用内标校正的仪器中子活化分析法对高纯溴化铱中微量铱进行了精确测定。使用已知量的Au标准溶液作为内标，以补偿通过辐照舱的中子通量的不均匀性和中子自屏蔽。采用内标法改善了铱标准曲线的线性。与测定值相关的相对扩展不确定度（k = 2）为0.86%，可精确测定铱的mg量。
Instrumental neutron activation analysis with internal standard correction was applied for precise determine of mg quantities of Ir in high-purity IrBr4. A known amount of Au standard solution was used as an internal standard to compensate for inhomogeneity of the neutron flux through an irradiation capsule and for neutron self-shielding. The linearity of the calibration curves of Ir was improved by using an internal standard. The relative expanded uncertainty (k = 2) associated with the determined value was 0.86%, which allowed the mg quantities of iridium to be precisely determined.