QUALITY-CONTROL OF PIXE AND PIGE NUCLEAR ANALYTICAL TECHNIQUES IN GEOLOGICAL AND ENVIRONMENTAL APPLICATIONS

被引：21
|
作者：
VALKOVIC, O
JAKSIC, M
FAZINIC, S
VALKOVIC, V
MOSCHINI, G
MENAPACE, E
机构：
[1] IAEA,AGCY LABS,SEIBERSDORF,AUSTRIA
[2] IST NAZL FIS NUCL,LAB NAZL LEGNARO,PADUA,ITALY
[3] ENEA,BOLOGNA,ITALY
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1995年 / 99卷 / 1-4期
关键词：
D O I：
10.1016/0168-583X(95)00230-8
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Several powder standard reference materials (SRM) used mainly in geological and environmental applications have been tested for reliability on miligram scale. Specific experimental conditions such as beam energy and diameter, as well as the matrix composition of the analysed samples, determine a lower limit on the necessary mass for which the SRM must be homogeneous. These mass limits have been determined for specific elements and are compared to the minimal mass required for analysis as specified by the certifying body. Since the accuracy of PIGE analysis is often hindered by the presence of interfering nuclear reactions, this narrows down the useful number of elements for which the SRM is certified.
引用
收藏
页码：372 / 375
页数：4
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