Publication Details |
| Category | Text Publication |
| Reference Category | Conference papers |
| Title (Primary) | Investigation of river bank infiltration using 222Rn as radiotracer |
| Title (Secondary) | Isotope techniques in water resources development and management. Book of extended synopses. International Symposium held in Vienna, Austria, 10–14 May 1999 |
| Author | Freyer, K.; Treutler, H.C.; Dehnert, J.; Kuhn, K.; Nestler, W. |
| Source Titel | IAEA-SM |
| Year | 1999 |
| Department | ANA |
| Volume | 361/6 |
| Abstract | Owing to its different concentrations in groundwater and river water, the naturally occurring isotope 222Rn can be used as a natural tracer to determine the residence time of freshly infiltrated water and the infiltration velocity. The method applied here is based on the increasing concentration of radon activity in infiltrating river water as it passes through the river bank. Radon’s low activity concentrations in Pleistocene aquifers require high measuring accuracy for radon in water. A measuring technique including standardized sampling, the optimization of flushing volume and the rapid analysis of radon by liquid scintillation spectrometry has been applied. Work was carried out at a battery of wells with an infiltration measuring profile at East Torgau Waterworks, where bank-filtered water is extracted as part of the long-distance water supply system covering the Elbe flood plains and the eastern Harz. The existence of homogeneous radon emanation on a macroscopic scale in a valley aquifer cannot be expected. The equilibrium radon activity concentration unaffected by surface water, which is required to determine residence times, was measured for each sampling point during a period of relatively low groundwater flow. The infiltration of river water into the adjacent aquifer during a flood wave was ascertained. Furthermore, the residence time of infiltrated water was determined at a sampling point installed beneath the River Elbe and the infiltration velocity was calculated. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=7957 |
| Freyer, K., Treutler, H.C., Dehnert, J., Kuhn, K., Nestler, W. (1999): Investigation of river bank infiltration using 222Rn as radiotracer Isotope techniques in water resources development and management. Book of extended synopses. International Symposium held in Vienna, Austria, 10–14 May 1999 IAEA-SM 361/6 International Atomic Energy Agency (IAEA), Vienna, |
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