Marina Ćuk Đurović

• PhD
• Research Associate at University of Belgrade

Various multivariate statistical techniques (MST) can provide valuable insights into water quality variability. Despite numerous studies in which these methods have been used, their potential has not been fully exploited. This paper presents an improved approach to better understand the hydrodynamics of karst systems. The integrated application of...

Combining the results obtained by hydraulic (hysteresis) and hydrochemical (multivariate statistical analysis) approaches gives a better understanding of karst aquifer behavior, functioning of the hydraulic barrier and hydrogeochemical processes. The hydraulic approach is based on the principle that the relation of the groundwater levels in piezome...

The objective of this paper was to determine background values (BV) and anomalous values (AV) of U and Th in groundwater and to establish hydrogeochemical conditions which lead to the elevated concentrations of these elements in groundwater. The methodology included planning and collecting of water samples, laboratory work, and assessment of BV and...

Based on the results of 15 years of research on the physical and chemical parameters of 11 occurrences of thermal and mineral water in the extended area of the spa town of Vrnjačka Banja, diverse hydrochemical types of water have been identified, originating from different lithological formations (serpentinite, schist, marble, etc.). Currently, the...

The systematically varying properties and generally coherent and predictable behavior of rare earth elements (REE) make them potential tracers for studying water/rock interaction and weathering processes. In this work, a compilation and analysis of REE data in mineral and thermal waters were performed, focusing on their content and distributions in...

This hydrogeochemical research was conducted to improve the understanding of (1) groundwater flow and its hydrochemical evolution in a complex karst-fissured aquifer system, and (2) the interaction between groundwater and water transported via hydraulic tunnel of the hydropower plant (Pirot, Serbia). The tunnel traverses the main fault zones betwee...

The establishment of detailed monitoring of quantitative and qualitative parameters of groundwater in the zone of possible interactions between a water-conveyance tunnel and the geologic/hydrogeologic environment is of the utmost importance for assessing the risk of adverse effects and of tunnel performance. The water-conveyance tunnel of the Pirot...

A new approach using hydrochemical characterization of mineral water in Serbia was applied in this paper. After field research and groundwater sampling, laboratory measurements were conducted. Trace and ultratrace elements in 174 samples of mineral water were analyzed using HR ICP–MS and methods to determine gross alpha/beta activities were applied...

This paper research the newly-discovered U, Th-REE mineralization in Jurassic sediments in Eastern Serbia, Carpatho-Balkanides geotectonic unit - Plavna granitoid. During 2009-2013 research was conducted using a range of geological and hydrogeological methods for geochemical and petrographical analyses of rocks. It was found that uranium mineraliza...

For the present study, 172 groundwater samples (collected from wells and natural springs in Serbia) were analyzed for different chemical parameters including uranium. For each groundwater sample, information was compiled about the basic parameters of its chemical composition. Most of the samples were found to be of the Na – HCO3 and Ca, Mg − HCO3 w...

Bottled waters were analyzed for different chemical parameters and activity concentrations of radionuclides. The hydrocarbonate ion was dominant in all samples, while the major cation composition was a combination of Ca-Mg-Na ions. Physicochemical properties of bottled water samples are influenced by underlying geology. The sum of trace element con...

The Zasavica River has an extraordinary richness of Euglenophyta algae. In general, those algae are cosmopolitan and very common. They usually inhabit stagnant and slow-flowing waters with high content of organic matter during the summer months. Euglenophyta of the Zasavica River in Serbia were studied at two localities ("Molo" and "Mostić") from D...

Long-term monitoring of groundwater regimes has been conducted to study the impact of prolonged groundwater abstraction from an aquifer in northern Serbia (Bačka District). This aquifer within the Pannonian Basin represents the principal source of drinking water supply. In general, the quality of the groundwater used as the drinking water supply in...

Activity concentrations of radionuclides 40K, 228Ra, 226Ra, 238U and Th232 and gross alpha and beta activities were analyzed in more than 100 samples of groundwater in Serbia. The highest gross alpha activity was recorded at 1.33 Bq/L (average 0.12 Bq/L), while the highest beta activity was 5.43 Bq/L (average 0.68 Bq/L). The potassium isotope 40K e...

An estimate of deep groundwater temperature is necessary for the research and utilization of this geothermal resource. Geothermometers are based on the temperature relation of some chemical reactions or the solubility of some minerals. Researchers mostly use silicon-based (quartz, chalcedony, amorphous silica) and cation-based (Na-K, Na-K-Ca, Na-K-...

Multivariate statistical analyses are used for reducing large datasets to a smaller number of variables, which explain main hydrogeochemical processes that control water geochemistry. Factor analysis (FA) allows discovering intercorrelations inside the data matrix and grouping of similar variables, i.e. chemical parameters. In this way new variable...

Twenty-one bottled mineral and spring waters from Serbia were analyzed for 16 inorganic chemical parameters, including lanthanides and yttrium which belong to the group of so-called rare earth elements (REE). REE concentrations in the bottled water samples varied over a broad range, from 5.39 to 1585.82 ng/L. Total concentrations in the bottled wat...

The population of Serbia's South Pannonian Basin obtains its drinking water supply from groundwater. High alkalinity; the presence of iron, manganese, and the ammonium ion; low hardness; and high concentrations of organic substances and arsenic are general characteristics of these groundwaters. One of the major drinking water supply issues in the S...