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Redundance rivers in the confluence of Likorda [Serbia (Serbia and Montenegro)]
2005
Ristanovic, B. E-mail:braristan@yahoo.com | Jokic, I. | Bojanic, D.(Prirodno-matematicki fakultet, Novi Sad (Serbia and Montenegro). Departman za geografiju, turizam i hotelijerstvo)
Redudance rivers are basic hydrographic problem in area of Radjevina. Their appearance to associate for most rivers in the confluence of Likorda river and have character of season. Using method of quantity index the rivers of this region are classified in special hydrological classes. On the basis of this typology the possible models for solution of this problem are given.
Afficher plus [+] Moins [-]Determination of lead content in stream water of river Ibar [Serbia (Serbia and Montenegro)] by potentiometric stripping analysis (PSA)
2005
Babincev, Lj.M.(Fakultet tehnickih nauka, Kosovska Mitrovica (Serbia and Montenegro)) E-mail:babicev@ptt.yu | Novakovic, I.D. | Rajakovic, Lj.V.
Potentiometric stripping analysis (PSA) is highly sensitive electroanalytical method for determination of traces of heavy metals. In this paper detection limit and linearity of potentiometric stripping analysis for lead was investigated. Method was successfully used for determination of traces of lead ion (detection limit 5 microgram/cubic dm) in stream water of river Ibar, before and after joint of potential pollutant.
Afficher plus [+] Moins [-]Changes in the biocenoses composition and the Zapadna Morava midstream [Serbia (Serbia and Montenegro)] water quality trend
2005
Jurisic, I.(Osnovna skola Vozd Karadjordje, Jakovo (Serbia and Montenegro)) | Markovic, G.(Agronomski fakultet, Cacak (Serbia and Montenegro))
During several years of hydrobiological investigation of the Zapadna Morava river the Medjuvrsje and Stancici localities stood out; the most favourable water quality was registered with the Medjuvrsje reservoir (being constantly of the class 2), whilst, according to all the data obtained over the years, water quality of the Zapadna Morava at Stancici locality was the worts. The Medjuvrsje reservoir is in stable eutrophic phase. The saprobic index value points to a certain water quality improvement. Floristic diversity in the locality of Stancici increased over the years. An increase in the percental share of the oligosaprobity indicator indicates a certain organic load decrease and an improving water quality trend was recorded as indicated by lower saprobic index values.
Afficher plus [+] Moins [-]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.
Afficher plus [+] Moins [-]Protection of water on Belgrade [Serbia and Montenegro] territory through plan documents
2005
Ristic, R.(Sumarski fakultet, Beograd (Serbia and Montenegro)) | Stefanovic, M. | Gavrilovic, Z.
The diffusion of erosive processes in Serbia and frequency of torrential floods are the factors of degradation of environment. Communities in Serbia are obliged to make Plans for announcement of erosive regions and for protection by torrential floods on water courses out of regular system of defense. An example of Belgrade is presented in this paper, where the Plans for announcement of erosive regions and defense by torrential floods were carried out. These documents are the basis for water protection and usage of natural resources on the concept of sustainability.
Afficher plus [+] Moins [-]One of the problems encountered in computing low flows for water courses that sporadically dry up
2005
Petkovic, T.(Republicki hidrometeoroloski zavod, Beograd (Serbia and Montenegro)) E-mail:petkovic@hidmet.sr.gov.yu
The paper contains description of potential approaches to better defining of distribution curves parameters for low water levels on water courses that sporadically dry up, also including additional information on the length of dry period. Computed results are given for the example of minimum annual discharge on several rivers in the Velika Morava basin, Serbia (Serbia and Montenegro).
Afficher plus [+] Moins [-]Population dynamic of bacteria in the Moraca river [Montenegro (Serbia and Montenegro)]
2005
Radonjic, D. | Joksimovic, N.(Institut za javno zdravlje, Podgorica (Serbia and Montenegro))
During the 2004 research of Moraca river water quality was conducted onto six localities: Pernica, Zlatica, Gradska plaza, Kolektor, Grbavci and Vukovci. Physical, chemical and microbiological properties were analyzed. Physical and chemical analyses done were: water temperature, air temperature, pH, electro-conductivity, KMnO4 consumption, dissolved O2 and BCO5 (biological consumption of oxygen in five days). Microbiological analysis included determination of the total number of aerobic mezophyll bacteria, oligotrophic and heterotrophic bacteria, as well as the most probable number of colliform bacteria. In addition to distribution and population dynamics, identification of the bacteria was also done. Microbiological water analysis were performed using standard bacteriologic methods and identification of the bacteria using INVIC or, when needed, using API diagnostics.
Afficher plus [+] Moins [-]Water quality analysis of the rivers Tamis, Plovni [and] Stari Begej [Serbia and Montenegro] using the WQI method
2004
Dopudja-Glisic, T. | Denic, Lj.(Republicki hidrometeoroloski zavod Srbije, Beograd (Serbia and Montenegro))E-mail:kvalitet_voda@hidmet.sr.gov.yu
This paper presents the results of water quality analysis of the rivers Tamis, Plovni and Stari Begej, using the WQI method, for the time periods 1987-1991 and 1998-2002. It also show the trend of water quality of these water streams for two characteristic time periods, through trend of WQI index.
Afficher plus [+] Moins [-]State of Crnojevica river [Montenegro (Serbia and Montenegro)] water quality in specific hydrodynamic conditions
2004
Djuraskovic, P.N. | Kojovic, A.(Hidrometeoroloski zavod Crne Gore, Podgorica (Serbia and Montenegro))
The sampling of Crnojevica river has been carried out, because of estimation the correlation between main water quality parameters and precipitation impacts, as well as adequate hydrological parameters. An appropriate dynamic sampling has been applied. Continuous pollution of river water has been confirmed, as well as source of the pollution. It is estimated strong correlation of water quality parameters from precipitation quantity and water level, especially for sanitary pollution. Change of quality parameters value is discrete and accidental.
Afficher plus [+] Moins [-]Benthic algae of the river Rasina [Serbia (Serbia and Montenegro)]
2004
Rzanicanin, A.(Univerzitet u Beogradu, Beograd (Serbia and Montenegro). Bioloski fakultet, Institut za botaniku i Botanicka basta 'Jevremovac')
The paper presents the results of investigation of benthic algae of the river Rasina. During April, 2001, it was determined 110 algal taxa from the divisions Cyanophyta, Bacillariophyta and Chlorophyta, which indicate the high biodiversity of algae in this river. With 97 algal taxa, Bacillariophyta is dominant. The community of benthic algae is typical for this kind of aquatic ecosystem during the spring period. Great number of algal bioindicators of highly polluted water indicates the presence of high concentration of organic compounds in this aquatic ecosystem.
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