DETERMINATION OF CL-36 IN THE GROUNDWATERS AND ORES AROUND A URANIUM DEPOSIT

被引：9

作者：

JIANG, SS ^{[1
]}

JIANG, S ^{[1
]}

GUO, H ^{[1
]}

DU, SB ^{[1
]}

CHEN, ZR ^{[1
]}

GUO, OF ^{[1
]}

ZHAO, YL ^{[1
]}

机构：

[1] BEIJING RES INST GEOL,BEIJING 100029,PEOPLES R CHINA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1994年 / 92卷 / 1-4期

关键词：

D O I：

10.1016/0168-583X(94)96039-9

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We intend to use fission-induced Cl-36 as a tracer to study the transport of mobile radionuclides and the invasion of a uranium ore body by groundwater in Lianshanguan uranium deposit, which has been considered as a natural geochemical analogue for a nuclear waste repository. The ore and groundwater samples were selected around the uranium deposit. The measurement of Cl-36, was carried out using accelerator mass spectrometry at the China Institute of Atomic Energy. After correction for native Cl in the samples, the deduced Cl-36/Cl ratios range from 7000 x 10(-15) to 15000 x 10(-15) for ore samples and from 1200 x 10(-15) to 150 x 10(-15) for groundwater samples. The calculated Cl-36 contents range from 3.7 x 10(7) to 7.5 x 10(6) atoms/g in the ore samples and from 1.4 x 10(8) to 8.2 x 10(6) atoms/l in the groundwater samples. The calculated concentration of cosmogenic Cl-36 in the groundwater is 5 x 10(6) atoms. The result shows that the concentration of Cl-36 in groundwater is mainly due to in-situ production of Cl-36, leached from the ore body by the groundwater and the Cl-36 tracer can be used to investigate the invasion of the uranium ore body by groundwater and the geochemical isolation of groundwater in the uranium deposit area.

引用

页码：385 / 388

页数：4

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