hrvatski

Analiza sadržaja nutrijenata u površinskim vodama rijeke Mure

Mur River (Croatian: Mura) is a 464 km long river located in Međimurje region in Croatia, and it is Croatia’s most northern river. Originating in Austria, it flows through Slovenia and Hungary, continues its flow in Croatia where it flows into the Drava River. Mur River is one of the last significantly preserved lowland rivers, thus the aim of our study was to analyse the Mur River water quality to determine whether water quality has changed over the time and how. To that purpose, concentration of nitrogen and phosphorus compounds in the Mur River surface waters was analysed. Samples were taken at location Goričan, once to twice a month over the period of ten years (2004–2013). During analysed period concentration of total nitrogen was within the range of 0.48–3.771 mg/L, concentration of nitrites was 0.001–0.175 mg/L, while concentration of nitrates was 0.75–3.06 mg/L. Concentration of orthophosphates was within the range of 0.005–0.141 mg/L, and concentration of total phosphorus was 0.025–1.01 mg/L. The highest concentration of total nitrogen was measured in water samples collected in March of 2006, nitrates in December of 2008, while the highest concentration of nitrites was measured December of 2012. The highest concentration of total phosphorus was measured in May of 2006, and orthophosphates in January of 2007. Analysed nutrients show a decrease in value during 2013, with lowest measured value of nitrites of 0.007 mg/L, nitrates 0.97 mg/L, total nitrogen 0.48 mg/L, orthophosphates 0.015 mg/L, and total nitrogen of 0.025 mg/L.

Mura ; nitrati ; nitriti ; ukupni dušik ; ortofosfati ; ukupni fosfor

nije evidentirano

engleski

Analysis of concentration of nutrients in Mur River surface waters

Mur River (Croatian: Mura) is a 464 km long river located in Međimurje region in Croatia, and it is Croatia’s most northern river. Originating in Austria, it flows through Slovenia and Hungary, continues its flow in Croatia where it flows into the Drava River. Mur River is one of the last significantly preserved lowland rivers, thus the aim of our study was to analyse the Mur River water quality to determine whether water quality has changed over the time and how. To that purpose, concentration of nitrogen and phosphorus compounds in the Mur River surface waters was analysed. Samples were taken at location Goričan, once to twice a month over the period of ten years (2004–2013). During analysed period concentration of total nitrogen was within the range of 0.48–3.771 mg/L, concentration of nitrites was 0.001–0.175 mg/L, while concentration of nitrates was 0.75–3.06 mg/L. Concentration of orthophosphates was within the range of 0.005–0.141 mg/L, and concentration of total phosphorus was 0.025–1.01 mg/L. The highest concentration of total nitrogen was measured in water samples collected in March of 2006, nitrates in December of 2008, while the highest concentration of nitrites was measured December of 2012. The highest concentration of total phosphorus was measured in May of 2006, and orthophosphates in January of 2007. Analysed nutrients show a decrease in value during 2013, with lowest measured value of nitrites of 0.007 mg/L, nitrates 0.97 mg/L, total nitrogen 0.48 mg/L, orthophosphates 0.015 mg/L, and total nitrogen of 0.025 mg/L.

Mur River ; nitrates ; nitrites ; total nitrogen ; orthophosphates ; total phosphates

nije evidentirano