Abstract
Water quality is defined by numerous physical, chemical and biological parameters, the content of organic and inorganic substances, and its monitoring has become a global health, economic and legal interest in recent decades. In this paper, some of the most important indicators of chemical surface water quality were determined in samples from the river Sava (Ada i Ušće), Danube (Pristanište i Kej) and Topčiderka (Rakovica). Water samples from selected locations were collected in November 2014 and chemical parameters were determined using standard analytical procedures. The results were obtained in the following range: pH (5.71-6.40), content of dissolved oxygen (11.04-11.99 mg/dm3), chloride (20.89-32.82 mg/dm3), alkalinity (207.9-300.9 mg CaCO3/dm3), acidity (31.79-54.90 mg CaCO3/dm3), calcium (37.23-54.90 mg/dm3), magnesium (6.90-23.65 mg/dm3), total water hardness (137.6-235.8 mg CaCO3/dm3), chemical oxygen demand - COD (4.08-9.12 mg O2 /dm3). Tested parameters indicate no significant pollution of the surface water, but in order to perform the correct categorization of water in these rivers, it would be necessary to do further testing of physical, chemical and biological indicators of the water quality.
Highlights
Trajković F. et al Determination of chemical quality parametars in surface water samples from rivers Sava, Danube, and Topčiderka
Svi uzorci vode ispitivani u ovom radu pokazuju kiselu reakciju nižu od granične vrednosti od 6,5 pH jedinica, što može da ukaže na opterećenje voda organskim materijama, čijim se razlaganjem stvara ugljen-dioksid (CO2) koji, rastvaranjem u vodi, dovodi do sniženja njene pH
U svim ispitivanim uzorcima sadržaj hlorida je u okviru dozvoljene granice za prvu klasu rečnih voda do 50 mg/dm3 (tabela 1) i u korelaciji je sa rezultatima Agencije za zaštitu životne sredine iz 2013
Summary
Trajković F. et al Determination of chemical quality parametars in surface water samples from rivers Sava, Danube, and Topčiderka. U ovom radu su određivani neki od najvažnijih pokazatelja hemijskog kvaliteta površinskih voda u uzorcima iz reke Save (Ada i Ušće), Dunava (Pristanište i Kej) i Topčiderke (Rakovica). U ovom radu su određivani neki od pokazatelja hemijskog kvaliteta površinskih voda (kiselost, alkalitet, aciditet, sadržaj kalcijuma i magnezijuma, sadržaj hlorida, rastvorenog kiseonika i hemijska potrošnja kiseonika) u uzorcima iz reke Save (Ada i Ušće), Dunava (Pristanište i Kej) i Topčiderke (Rakovica).
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