The Heavy Metals in City Water Supply of New Belgrade
Teški metali u vodi gradske vodovodne mreže Novog Beograda
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Author
Rajkovic, Milos
Stojanovic, Mirjana
Keywords
drinking waterscale
heavy metals
uranium
voda za piće
kamenac
teški metali
uran
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Show full item recordAbstract
In this work, the subject of research is the scale formed by heating the drinking water that
flows through the city water supply of New Belgrade. Analysis of the scale showed that its
main ingredient is CaCO3, but in the scale and in drinking water could be found alkali and
alkaline earth metals, heavy metals, semimetals and radioactive elements.
In tested drinking water elements whose presence in large quantities is not desirable (eg,
Pb) are proven to exist, as well as elements that, so far, have not been found in the water of the
Belgrade water supply (eg, Ni). Based on the results of fractional analysis, it is concluded that
the uranium found in the scale and in the drinking water is in the form of potentially accessible
and mobile fractions which indicate its anthropogenic origin.
Analysis of scale, with all the parameters of scale existing (water flow, temperature, etc..),
presents an indirect method of analyzing the quality of drinking water, especially for low levels
of pollutants which are harmful to the human body. Predmet ispitivanja u radu bio je kamenac nastao zagrevanjem vode za piće
koja protiče kroz gradsku vodovodnu mrežu Novog Beograda. Analiza kamenca
pokazala je da je njegov glavni sastojak CaCO3, ali se u kamencu, a samim tim i u vodi
za piće, nalaze i alkalni i zemnoalkalni metali, teški metali, polumetali i radioaktivni
elementi.
U ispitivanoj vodi za piće dokazani su elementi čije prisustvo u većoj količini nije
poželjno (npr. Pb), ali i elementi koji, do sada, nisu nađeni u vodi beogradskog
vodovoda (npr. Ni). Na osnovu rezultata frakcione ekstrakcije, zaključuje se da se uran
u kamencu, a samim tim i u vodi za piće, nalazi u obliku potencijalno pristupačnih i
mobilnih frakcija koje ukazuju na njegovo antropogeno poreklo.
Analiza kamenca, uz poznavanje svih parametara nastanka kamenca (protok vode,
temperatura i dr.), predstavlja posrednu metodu analize kvaliteta vode za piće, posebno
za polutante niskih sadržaja štetnih za ljudski organizam.