In situ production of Cl-36 in uranium ore: A hydrogeological assessment tool

被引：9
作者：
Cornett, RJ
Cramer, J
Andrews, HR
Chant, LA
Davies, W
Greiner, BF
Imahori, Y
Koslowsky, V
McKay, J
Milton, GM
Milton, JCD
机构：
[1] AECL RES,CHALK RIVER LABS,NUCL PHYS BRANCH,CHALK RIVER,ON K0J 1J0,CANADA
[2] WHITESHELL LABS,GEOCHEM RES BRANCH,PINAWA,MB R0E 1L0,CANADA
[3] AECL RES,CHALK RIVER LABS,TANDEM & SUPER CONDUCT CYCLOTRON ACCELERATORS & D,CHALK RIVER,ON K0J 1J0,CANADA
来源：
WATER RESOURCES RESEARCH | 1996年 / 32卷 / 06期
关键词：
D O I：
10.1029/95WR03821
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In situ neutron activation of Cl-35 within the rock and groundwater of geologic deposits that have elevated concentrations of uranium provides a hydrogeological tracer. We determine the production rate and mobility of Cl-36 in the 1.3-billion-year-old Cigar Lake uranium ore deposit. Accelerator mass spectrometry was used to map the concentrations of Cl-36 in the ore and in the groundwater that were up to 100 times greater than those encountered in unmineralized portions of the host sandstone aquifer. The residence time of this mobile anion in groundwater within the mineralized zone ranged from 14 to 280 kyr. These residence times are consistent with the hydraulic and geochemical data, suggesting significant control of Cl- and groundwater movement by the clay-rich matrix of the mineralized zone.
引用
收藏
页码：1511 / 1518
页数：8
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