An isotope study of the sources of nitrate in Malta’s groundwater

@inproceedings{Heaton2012AnIS,
  title={An isotope study of the sources of nitrate in Malta’s groundwater},
  author={Tim H. E. Heaton and Marianne E. Stuart and Manuel Sapiano and Miriam Micallef Sultana},
  year={2012}
}
Levels of nitrate in Malta’s groundwater are high. Median concentrations in the main sea-level aquifers of Malta and Gozo are 14 and 10 mg NO3–N L−1, respectively, and even higher in the younger groundwaters of the perched aquifers on Malta (37 mg NO3–N L−1). The wide variations in groundwater nitrate concentration are not due to denitrification, as 15N/14N and 18O/16O analyses of 47 samples from the three aquifer types found clear evidence for this process in only one sample. 90% of the… CONTINUE READING

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