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Water resources, particularly the phreatic ones, are exposed to a high risk of nitrates pollution. This pollution appears mostly in rural areas, due to improper use of fertilizers, improper waste storage or local sources of infestation, like animal sheds, and so on. Recent researches have indicated that clay can be used for groundwater decontamination. Mass transport between the unsaturated and saturated zones greatly influences subsurface processes. The transition zone between the vadose zone and the saturated zo...

Assessment of selected (trace) elements and nitrate along the 26.7 km long Radonja River (Croatia) was examined with the purpose of testing the ability for small rivers to serve as a model for identification of sources and dispersion of common environmental contaminants. The Radonja River rises and flows through specific geological region of the Petrova Gora Mt. (507 m a.s.l.). It is located in the middle part of Croatia, with the Vojni? town (~5,000 inhabit.) as the largest settlement along the whole river course...