Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Buchkapitel |
| Titel (primär) | Do variable hydrologic and redox conditions influence organic pollutants in the streambed? |
| Titel (sekundär) | GQ10: Groundwater quality management in a rapidly changing world. Proceedings 7th International Groundwater Quality Conference held in Zurich, Switzerland, 13-18 June 2010 |
| Autor | Schmidt, C.; Kalbus, E. |
| Herausgeber | Schirmer, M.; Hoehn, E.; Vogt, T. |
| Quelle | IAHS Publication |
| Erscheinungsjahr | 2011 |
| Department | HDG |
| Band/Volume | 342 |
| Seite von | 397 |
| Seite bis | 400 |
| Sprache | englisch |
| Keywords | streambed; temperature; streambed contamination |
| Abstract | Significant natural attenuation of organic pollutants may occur in streambed sediments because of the transition from anaerobic to aerobic conditions and an increased microbial activity. Alternating directions and magnitudes of water flow in the streambed may enhance or inhibit the supply of oxygen to the streambed and thus influence the redox zonation. In a field study at a small stream, we observed the variability of hydraulic gradients, streambed temperatures, redox conditions and monochlorobenzene (MCB) concentrations in the streambed over the course of five months. During the observation period the hydrologic conditions changed from losing to gaining. Redox conditions were highly variable in the shallow streambed at a depth of 0.1 m below the streambed surface. At depths of 0.3 m and 0.5 m, the redox conditions were stable and comparable to those typically found in the aquifer. The concentrations of MCB in the streambed were not systematically influenced by varying hydrologic or redox conditions. |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=11698 |
| Schmidt, C., Kalbus, E. (2011): Do variable hydrologic and redox conditions influence organic pollutants in the streambed? In: Schirmer, M., Hoehn, E., Vogt, T. (eds.) GQ10: Groundwater quality management in a rapidly changing world. Proceedings 7th International Groundwater Quality Conference held in Zurich, Switzerland, 13-18 June 2010 IAHS Publ. 342 International Association of Hydrological Sciences (IAHS), Wallingford, Oxfordshire, p. 397 - 400 |
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