Geochemical and isotopic study to determine sources and processes affecting nitrate and sulphate in groundwater influenced by intensive human activity - carbonate aquifer Gliwice (southern Poland)
CFCs helped to identify municipal and industrial sources of NO3− in groundwater. δ18O and δ34S suggested domination of SO42- from agriculture and sulphide oxidation. Sulphate reduction was confirmed using geochemical modelling for SO42--free water.