INSTRUMENTAL AND RADIOCHEMICAL NEUTRON-ACTIVATION ANALYSIS OF TRACE IODINE IN GEOLOGICAL SAMPLES

被引：13

作者：

EBIHARA, M

SAITO, N

AKAIWA, H

TOMURA, K

机构：

[1] RIKKYO UNIV,INST ATOM ENERGY,YOKOSUKA 24001,JAPAN

[2] GUNMA UNIV,FAC ENGN,DEPT APPL CHEM,KIRYU,GUNMA 376,JAPAN

来源：

ANALYTICAL SCIENCES | 1992年 / 8卷 / 02期

关键词：

NEUTRON ACTIVATION ANALYSIS; IODINE; STANDARD ROCK SAMPLE; SEDIMENTARY ROCK; EPITHERMAL NEUTRON;

D O I：

10.2116/analsci.8.183

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

For determining trace amounts of iodine in geological samples (igneous and sedimentary rocks), applicabilities of instrumental and radiochemical neutron activation analyses (NAA) using a short-lived nuclide I-128 were examined. Instrumental NAA using a TRIGA-type reactor and Cd metal or boron carbide as an absorbing filter of thermal neutron could be applied for the determination of iodine in ppm level in sedimentary rocks. Further, radiochemical NAA (RNAA) could lower the detection limit down to several ppb for igneous rock samples. Even though RNAA was employed, at least 6 samples could be routinely analyzed a day (6 h in reactor operation) using the analytical procedures reported in this work.

引用

页码：183 / 187

页数：5

共 6 条

[1] 1986 VALUES FOR 15 GSJ ROCK REFERENCE SAMPLES, IGNEOUS ROCK SERIES [J].