DETERMINATION OF THORIUM CONCENTRATION IN SEAWATER BY NEUTRON-ACTIVATION ANALYSIS

被引：24

作者：

HUH, CA ^{[1
]}

BACON, MP ^{[1
]}

机构：

[1] WOODS HOLE OCEANOG INST,WOODS HOLE,MA 02543

来源：

ANALYTICAL CHEMISTRY | 1985年 / 57卷 / 11期

关键词：

CHEMICAL ANALYSIS - Activation - ISOTOPES - Radioactivity - THORIUM AND ALLOYS - Measurements;

D O I：

10.1021/ac00288a030

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A sensitive neutron activation analysis method has been successfully developed to determine **2**3**2Th concentration in seawater. The method involves both preirradiation and postirradiation radiochemical separations. The isotopes were separated from the samples and purified during the preirradiation chemistry. **2**3**3Pa was extracted and counted after the irradiation. Yields were monitored with **2**3**0Th and **2**3**1Pa tracers. The separation and purification schemes include ion exchange chromatography and solvent extraction. By this method we have measured **2**3**2Th concentrations in some seawater samples that are 1 order of magnitude lower than most previously reported values.

引用

页码：2138 / 2142

页数：5

共 21 条

[1] REMOVAL OF TH-230 AND PA-231 FROM THE OPEN OCEAN [J].