Lin X, Henkelmann R
Institut für Radiochemie der Technischen Universität München, 85748, Garching, Germany.
Anal Bioanal Chem. 2004 May;379(2):210-7. doi: 10.1007/s00216-004-2557-6. Epub 2004 Mar 19.
An internal comparator method is proposed which offers reliable instrumental neutron activation analysis (INAA) results for samples with an irregular geometry and/or measured at the closest position to the Ge detector. Because the selected internal comparator in the sample analyzed will receive exactly the same thermal neutron flux as the other components, this method can be applied to the INAA of materials suffering from thermal neutron self-shielding. To apply the internal comparator method, the k(0)-method must be installed and the analytes, including the internal comparator, should be homogeneously distributed in the test portion.
提出了一种内标比较法，该方法可为具有不规则几何形状和/或在最靠近锗探测器的位置测量的样品提供可靠的仪器中子活化分析（INAA）结果。由于在所分析样品中选定的内标物将与其他成分接收完全相同的热中子通量，因此该方法可应用于存在热中子自屏蔽的材料的INAA分析。为了应用内标比较法，必须安装k(0)法，并且分析物（包括内标物）应均匀分布在测试部分中。
