Makarewicz M, Zeisler R
IAEA Laboratories Seibersdorf, International Atomic Energy Agency, Vienna, Austria.
Biol Trace Elem Res. 1994 Fall;43-45:95-102. doi: 10.1007/BF02917304.
A working analytical procedure for selenium determinations by INAA, using gamma spectrometry with a germanium well-type detector, is presented. The spectral line at 400.7 keV is employed, enhanced with the effect of energy summing in true coincidence of cascade photons. The main advantage of the method is high efficiency and reliable, interference-free results; potential drawbacks are increases in input count rate and pile-up losses, decrease in resolution, and sensitivity to errors in sample-to-detector geometry. The procedure is applied to certification analysis of reference materials, large-area biomonitoring by oak leave samples, and determination of separated proteins.
本文介绍了一种采用锗阱型探测器进行伽马能谱分析的中子活化分析法测定硒的实用分析程序。使用400.7 keV的谱线，并利用级联光子真符合时的能量叠加效应进行增强。该方法的主要优点是效率高、结果可靠且无干扰；潜在缺点是输入计数率增加和堆积损失、分辨率降低以及对样品与探测器几何形状误差敏感。该程序应用于参考物质的认证分析、通过橡树叶片样品进行的大面积生物监测以及分离蛋白质的测定。
