Simultaneous use of geochemical and geophysical methods to characterise abandoned landfills
| Autor: | José F. Noguera, Francisco Linares Martínez, Andrés Navarro, Lluís Rivero, Xavier Font |
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| Rok vydání: | 2002 |
| Předmět: |
Total organic carbon
Pollution geography geography.geographical_feature_category media_common.quotation_subject General Engineering Aquifer Geophysics Contamination Plume Earth and Planetary Sciences (miscellaneous) General Earth and Planetary Sciences Environmental Chemistry Environmental science Prospecting Leachate Groundwater General Environmental Science Water Science and Technology media_common |
| Zdroj: | Environmental Geology. 41:898-905 |
| ISSN: | 1432-0495 0943-0105 |
| DOI: | 10.1007/s00254-001-0467-x |
| Popis: | Groundwater sampling and geophysical methods determined a serious contamination problem associated with refilled exploitation sites at the Cal Dimoni area, Llobregat delta, Barcelona, Spain. To characterise this process, hydrogeochemical analyses were performed and showed the following modifications to groundwater chemical composition: increasing pH values, changing redox conditions, significant increases in total organic carbon (TOC) and certain trace elements, and high groundwater conductivity values. Major ion content accumulations were found under the refilled area. In contrast, elements involved in the oxidation–reduction processes, such as iron, manganese and nitrates, clearly diminished. Electromagnetic prospecting methods were also performed and delineated the contamination plume extent. These methods also showed separate sources of contamination, one clearly related to the groundwater–refilled zone leachate interaction, another as a consequence of the manure–accumulation surface site. Geochemical and geophysical methods have shown similar results for locating groundwater contamination sources, and for determining leachate generation mechanisms and flow paths. |
| Databáze: | OpenAIRE |
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