engleski

The pollution load by nitrogen and phosphorus in the Cetina River

The objective of the investigations of the Cetina River, located in southern Croatia, was to record specific characteristics and properties of the Cetina waters at nine (9) stations. In addition to measurements undertaken in the Cetina River, the water quality of its most significant springs and tributaries, such as: Kosinac, Šilovka, Studenci and Mala Ruda, Velika Ruda, Grab has also been measured. The water quality in the Cetina watershed has been evaluated in the following storage reservoirs:Peruča, Buško Blato, Prančevići.The nitrogen compounds and phosohorus concentrations have been estimated at all these sampling sites over a 3 year period (2005-2008).According to the investigations of the water quality of the Cetina springs and tributaries the bacteriological most polluted river spring is Kosinac and the bacteriologuical most polluted river tributary is Grab. With reference to the water quality in the Cetina storage reservoirs it may be concluded that the lowest quality standard has been found within the Prančevići storage reservoir regarding nitrogen compounds and phosphorus concentration levels.

total nitrogen; ammonia; nitrate; total phosphorus; Cetina River; Croatia

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