INSTRUMENTAL NEUTRON ACTIVATION ANALYSIS
INSTRUMENTAL NEUTRON ACTIVATION ANALYSIS
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DOI：
10.1021/ac60159a005
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发表时间：
1960-01-01
影响因子：
7.4
通讯作者：
WAGNER, CD
中科院分区：
文献类型：
--
作者：
GUINN, VP;WAGNER, CD
描述了一种不采用化学操作的纯仪器中子活化分析系统。它仅由中子活化和射线光谱法组成。即使范德格拉夫加速器光中子源提供的热中子通量相对较低（10s中子秒-1厘米-2），对超过25种元素进行了有用的分析，在许多情况下，灵敏度在百万分之一的范围内。一般来说，这种方法比同样灵敏度和准确度的化学或光谱学方法快得多；它是非破坏性的，相对来说没有严重的干扰。不涉及样品制备。它不仅用于痕量浓度的测量，而且由于速度快，也被用来分析许多宏观浓度的元素。每个样品的激活加上计数总共只有大约10分钟。
A system of purely instrumental neutron activation analysis in which no chemical operations are employed Is described. It consists solely of neutron activation followed by-ray spectrom-etry. Even with the relatively low thermal neutron flux available from the Van de GraafF accelerator photo-neutron source(10s neutrons sec.-1 cm.-2), useful analyses have been carried out for more than 25 elements, in many cases with sensitivities in the parts-per-million range. In general, the method is much faster than chemical or spectroscopic methods of equal sensitivity and accuracy; it is non-destructive and is relatively free of serious interferences. No sample preparation is involved. It is useful not only for measurement of trace concentrations, but, because of its great speed, is also chosen for analyses of many elements at macro concen-trations. Activation plus counting total only about 1 0 minutes per sample.