Investigation of Groundwater Flow in a Deep Aquifer by the Activable Tracer Method
In order to select most suitable activable tracers for investigation of groundwater flow (70°C) in an aquifer, loss of indium and dysprosium compounds (nitrate and chelate) by adsorption on rock, sampled from an underground aquifer at a depth of about 1000 m, was first examined by both batch and col...
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Published in | RADIOISOTOPES Vol. 34; no. 9; pp. 473 - 479 |
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Main Authors | , , , , |
Format | Journal Article |
Language | Japanese English |
Published |
Japan Radioisotope Association
1985
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Subjects | |
Online Access | Get full text |
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Summary: | In order to select most suitable activable tracers for investigation of groundwater flow (70°C) in an aquifer, loss of indium and dysprosium compounds (nitrate and chelate) by adsorption on rock, sampled from an underground aquifer at a depth of about 1000 m, was first examined by both batch and column methods. Next, the groundwater flow in an aquifer was investigated by injecting 1 kg of Dy-chelating complex salt (Dy-DTPA) and In-DTPA as activable tracers into a reducing well at a distance of 112 m from a producing well. Dy-DTPA and In-DTPA of 0.9μg/l and 0.4μg/l at maximum concentrations, respectively, were detected in the groundwater when 11000m3 and 21000m3 waters were pumped up from the producing well. Dy-DTPA has proved to be a useful tracer for the investigation because of relatively small loss whereas a considerable fraction of In-DTPA appears to be lost by adsorption or chemical decomposition. |
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ISSN: | 0033-8303 1884-4111 |
DOI: | 10.3769/radioisotopes.34.9_473 |