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The heavy metals determination in water
2005
Stankovic, S.(Univerzitet u Beogradu, Beograd (Serbia and Montenegro). Tehnolosko-metalurski fakultet) E-mail:slavka@tmf.bg.ac.yu | Markovic, J. | Rajkovic, M. | Rajakovic, Lj.
The aim of this study was to determine the content of heavy metals, cadmium and lead, in drinking water, spring and well water from rural part of south Serbia, as in water of river Jablanica and in the top water. The content of cadmium and lead, a very toxic metals, were studied simulataneously by potentiometric stripping analysis (PSA) in water samples using thin mercury film electrode, as a working electrode, by standard addition method in the presence of supporting electrolyte. The results of content of examined heavy metals obtained in examined water samples by PSA method, are compared with results obtained by using AAS and GF-AAS spectrometry.
Show more [+] Less [-]Formation of ozonation byproducts in the groundwater subjected to preozonation and coagulation
2005
Agbaba, J.(Prirodno-matematicki fakultet, Novi Sad (Serbia and Montenegro)) E-mail:agbabaj@ih.ns.ac.yu | Dalmacija, B. | Klasnja, M. | Ivancev-Tumbas, I.
The work considers the effect of the ozonization process on the change of contents of natural organic matter (NOM) and formation of byproducts in the groundwater pretreated by preozonation (2.0 g O3/cubic m) and coagulation with polyaluminium-chlorosulfate (5 and 10 g Al/cubuc m). Experiments were carried out on a semi-industrial plant of capacity of 2 cubic m/h, using groundwater with a high content of NOM (5.1 mg/l TOC). It was found that in the course of ozonization NOM content shows a decrease (18-64%), as well as the potential of formation of trihalomethanes, PFTHM (12-59%), whereas content of aldehydes increases by 3.0-7.7 microgram/l, depending on the water pretreatment and applied ozone dose. It was found correlation between specific aldehyde content and decrease of the specific PFTHM (r=0.815-0.998).
Show more [+] Less [-]The total alpha and beta activity of drinking water in [the] Republic of Serbia [Serbia and Montenegro] 2004
2005
Tanaskovic, I. | Pantelic, G. | Vuletic, V. | Javorina, Lj. | Eremic-Savkovic, M.(Institut za medicinu rada i radiolosku zastitu Dr Dragomir Karajovic, Beograd (Serbia and Montenegro). Laboratorija za toksoplazmozu) E-mail:VTAN@EUNET.YU
The results of the evaluation of the radiological safety of the drinking waters originating from the territory of Serbia were studied during 2004. The total of 121 samples were examined for the total alpha and beta specific activity. Radiologically correct were 92% of drinking water samples.
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