Abstract
Agriculture and the chemical industry are the most important activities in the Estarreja municipality and have put at risk the quality of surface water and groundwater, leading to a great vulnerability of the Estarreja shallow aquifer. In this respect, the main goal of the present study is the identification of contamination sources through the application of nitrogen and oxygen isotopes, beside the deuterium and oxygen isotopes in the Estarreja shallow aquifer. Results of δ15N and δ18O indicate isotopic signatures for ammoniacal fertilizers, wastewater and animal manure, clearly showing the influence of industrial and agricultural activities. The δ2H and δ18O enrichment of some samples could suggest a salinization phenomenon.
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Marques, A.C.P., do Rosário Carvalho, M., da Silva, E.A.F. (2022). Identification of Contamination Sources Through the Application of Nitrogen, Oxygen and Deuterium Isotopes in Estarreja Shallow Aquifer, Aveiro (Portugal). In: Chenchouni, H., et al. New Prospects in Environmental Geosciences and Hydrogeosciences. CAJG 2019. Advances in Science, Technology & Innovation. Springer, Cham. https://doi.org/10.1007/978-3-030-72543-3_132
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