Evaluation of the origin of sulphate at the groundwater source Ključ, Serbia.

The dual-isotope method of measuring both the δ(34)S and δ(18)O values of dissolved sulphate to assess the origin and fate of groundwater sulphate at the Ključ groundwater source, Serbia is applied. A sampling campaign was conducted in September 2007 during low-flow conditions, obtaining river water and groundwater from observation wells completed in a shallow aquifer formed in alluvial sandy-gravelly sediments. In the shallow groundwater, sulphate concentrations ranged from 56.

Evaluation of the origin of nitrate influencing the Ključ groundwater source, Serbia.

This paper describes the use of the dual isotope method involving δ(15)N and δ(18)O measurements of dissolved nitrates to assess the origin and fate of groundwater nitrate at the Ključ groundwater source, Serbia. A sampling campaign was conducted in September 2007 during flow conditions obtaining groundwater from observation wells and river water fed by a shallow aquifer hosted in alluvial (sandy-gravel) sediments. Nitrate isotope ratios ranged from +5.

Spatial and temporal variability of stable isotopes and biological parameters for the Danube River in Serbia.

This paper presents the results of hydrological, physicochemical, biological, and isotopic investigations of the Danube River along the stretch through Serbian territory conducted during four campaigns in September and November 2007, September 2008 and April 2009. The stable isotope values exhibited significant changes both in the Danube (-10.7 to-9.

Distribution of stable isotopes in surface water along the Danube River in Serbia.

Stable hydrogen and oxygen isotopes were analysed in water samples from the River Danube and its tributaries during a longitudinal survey performed in August 2005 on Serbian territory. Danube river water data ranged from-80 per thousand to-66 per thousand for delta2H, and from-11.2 per thousand to-9.

Isotopic characteristics of meteoric waters in the Belgrade region.

The stable isotope composition of hydrogen (delta(2)H) and oxygen (delta(18)O) in monthly precipitation and river water (Sava River and Danube) samples in the Belgrade area gathered between 1992 and 2005 are determined. The local meteoric water line delta(2)H=7.8 (+/-0.

Potential use of environmental isotopes in pollutant migration studies.

This article presents the use of natural abundance stable isotope (hydrogen, carbon, nitrogen, oxygen, chlorine) analysis data as a tool for providing important information about the origin of contaminants, the contribution of different sources to a multi-source plume, characterisation of their complex transport (rate and mechanisms) and for evaluating the success of contaminated site remediation. Isotopic signatures of contaminants are useful tracers of their sources, while isotopic fractionation can be used to quantitatively assess the progress of an environmental process such as biodegradation. This new isotopic approach is reliable and can offer more information than traditional techniques in pollutant migration studies, particularly after waste disposal.

Mobility of heavy metals originating from bombing of industrial sites.

Surface soil samples from the "NIS Jugopetrol" fuel storage sites has been studied. The aim of this work has been the detection of heavy and inorganic metals including As, Pb, Cd, Ni, Zn, Cr, and Cu in soils after bombing present due to outflow, burning or leaking of crude oil and oil products at five chosen locations: Belgrade-Cukarica, Smederevo, Nis, Bor and Prahovo. In order to get information of the future environmental and health risks, sampling was repeated after several months at the same locations.