The preliminary results of nitrate isotopes (δ15N and δ18O of NO3–) monitoring in the Pinios River basin, under the frame of Action 1. “Monitoring of the National Network of Isotopes in Rivers in Greece”, were presented at the 16th International Symposium on Isotope Hydrology that took place in Vienna (Austria, IAEA headquarters) on 3-7 July 2023.
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