TY  - JOUR
AU  - Ilijević, Konstantin
AU  - Gržetić, Ivan
AU  - Zivadinovic, Ivan
AU  - Popović, Aleksandar R.
PY  - 2012
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5757
AB  - Seasonal spatial and temporal changes of selected eco-chemical parameters in section of the Danube River flowing through Serbia were analyzed. Data for electrical conductivity (EC), dry and suspended matter, residue on ignition, chemical oxygen demand (COD), biochemical oxygen demand (BOD-5), ultraviolet extinction, dissolved oxygen (DO), oxygen saturation, pH, nitrates, total phosphorus, and nitrogen were collected between 1992 and 2006. The use of monthly medians combined with linear regression and two-sided t test has been proven to be the best approach for resolving trends from natural variability of investigated parameters and for determining trend significance. Patterns of temporal changes between different months were examined. It was also determined that spatial trends of some parameters oscillate in predictable manner, increasing in one part of the year and declining in the other. Regression slope coefficients, an excellent indicator for determining when the water quality is changing the most along the course of the Danube, reach their maximum during summer for temperature (t), electric conductivity, nitrates, and total N, while in the same season suspended matter, COD, BOD-5, DO, and oxygen saturation coefficients reach their minimum. Correlations for used data sets of selected parameters were analyzed for better understanding of their behavior and mutual relations. It was observed that as Danube flows through Serbia, its general eco-chemical status either stagnates or improves, but the rate of river self-purification often depends on the season of the year.
PB  - Springer, Dordrecht
T2  - Environmental Monitoring and Assessment
T1  - Long-term seasonal changes of the Danube River eco-chemical status in the region of Serbia
VL  - 184
IS  - 5
SP  - 2805
EP  - 2828
DO  - 10.1007/s10661-011-2153-0
ER  - 

@article{
author = "Ilijević, Konstantin and Gržetić, Ivan and Zivadinovic, Ivan and Popović, Aleksandar R.",
year = "2012",
abstract = "Seasonal spatial and temporal changes of selected eco-chemical parameters in section of the Danube River flowing through Serbia were analyzed. Data for electrical conductivity (EC), dry and suspended matter, residue on ignition, chemical oxygen demand (COD), biochemical oxygen demand (BOD-5), ultraviolet extinction, dissolved oxygen (DO), oxygen saturation, pH, nitrates, total phosphorus, and nitrogen were collected between 1992 and 2006. The use of monthly medians combined with linear regression and two-sided t test has been proven to be the best approach for resolving trends from natural variability of investigated parameters and for determining trend significance. Patterns of temporal changes between different months were examined. It was also determined that spatial trends of some parameters oscillate in predictable manner, increasing in one part of the year and declining in the other. Regression slope coefficients, an excellent indicator for determining when the water quality is changing the most along the course of the Danube, reach their maximum during summer for temperature (t), electric conductivity, nitrates, and total N, while in the same season suspended matter, COD, BOD-5, DO, and oxygen saturation coefficients reach their minimum. Correlations for used data sets of selected parameters were analyzed for better understanding of their behavior and mutual relations. It was observed that as Danube flows through Serbia, its general eco-chemical status either stagnates or improves, but the rate of river self-purification often depends on the season of the year.",
publisher = "Springer, Dordrecht",
journal = "Environmental Monitoring and Assessment",
title = "Long-term seasonal changes of the Danube River eco-chemical status in the region of Serbia",
volume = "184",
number = "5",
pages = "2805-2828",
doi = "10.1007/s10661-011-2153-0"
}

Ilijević, K., Gržetić, I., Zivadinovic, I.,& Popović, A. R.. (2012). Long-term seasonal changes of the Danube River eco-chemical status in the region of Serbia. in Environmental Monitoring and Assessment
Springer, Dordrecht., 184(5), 2805-2828.
https://doi.org/10.1007/s10661-011-2153-0

Ilijević K, Gržetić I, Zivadinovic I, Popović AR. Long-term seasonal changes of the Danube River eco-chemical status in the region of Serbia. in Environmental Monitoring and Assessment. 2012;184(5):2805-2828.
doi:10.1007/s10661-011-2153-0 .

Ilijević, Konstantin, Gržetić, Ivan, Zivadinovic, Ivan, Popović, Aleksandar R., "Long-term seasonal changes of the Danube River eco-chemical status in the region of Serbia" in Environmental Monitoring and Assessment, 184, no. 5 (2012):2805-2828,
https://doi.org/10.1007/s10661-011-2153-0 . .

TY  - JOUR
AU  - Ilijević, Konstantin
AU  - Gržetić, Ivan
AU  - Zivadinovic, Ivan
AU  - Popović, Aleksandar R.
PY  - 2012
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1288
AB  - Seasonal spatial and temporal changes of selected eco-chemical parameters in section of the Danube River flowing through Serbia were analyzed. Data for electrical conductivity (EC), dry and suspended matter, residue on ignition, chemical oxygen demand (COD), biochemical oxygen demand (BOD-5), ultraviolet extinction, dissolved oxygen (DO), oxygen saturation, pH, nitrates, total phosphorus, and nitrogen were collected between 1992 and 2006. The use of monthly medians combined with linear regression and two-sided t test has been proven to be the best approach for resolving trends from natural variability of investigated parameters and for determining trend significance. Patterns of temporal changes between different months were examined. It was also determined that spatial trends of some parameters oscillate in predictable manner, increasing in one part of the year and declining in the other. Regression slope coefficients, an excellent indicator for determining when the water quality is changing the most along the course of the Danube, reach their maximum during summer for temperature (t), electric conductivity, nitrates, and total N, while in the same season suspended matter, COD, BOD-5, DO, and oxygen saturation coefficients reach their minimum. Correlations for used data sets of selected parameters were analyzed for better understanding of their behavior and mutual relations. It was observed that as Danube flows through Serbia, its general eco-chemical status either stagnates or improves, but the rate of river self-purification often depends on the season of the year.
PB  - Springer, Dordrecht
T2  - Environmental Monitoring and Assessment
T1  - Long-term seasonal changes of the Danube River eco-chemical status in the region of Serbia
VL  - 184
IS  - 5
SP  - 2805
EP  - 2828
DO  - 10.1007/s10661-011-2153-0
ER  - 

@article{
author = "Ilijević, Konstantin and Gržetić, Ivan and Zivadinovic, Ivan and Popović, Aleksandar R.",
year = "2012",
abstract = "Seasonal spatial and temporal changes of selected eco-chemical parameters in section of the Danube River flowing through Serbia were analyzed. Data for electrical conductivity (EC), dry and suspended matter, residue on ignition, chemical oxygen demand (COD), biochemical oxygen demand (BOD-5), ultraviolet extinction, dissolved oxygen (DO), oxygen saturation, pH, nitrates, total phosphorus, and nitrogen were collected between 1992 and 2006. The use of monthly medians combined with linear regression and two-sided t test has been proven to be the best approach for resolving trends from natural variability of investigated parameters and for determining trend significance. Patterns of temporal changes between different months were examined. It was also determined that spatial trends of some parameters oscillate in predictable manner, increasing in one part of the year and declining in the other. Regression slope coefficients, an excellent indicator for determining when the water quality is changing the most along the course of the Danube, reach their maximum during summer for temperature (t), electric conductivity, nitrates, and total N, while in the same season suspended matter, COD, BOD-5, DO, and oxygen saturation coefficients reach their minimum. Correlations for used data sets of selected parameters were analyzed for better understanding of their behavior and mutual relations. It was observed that as Danube flows through Serbia, its general eco-chemical status either stagnates or improves, but the rate of river self-purification often depends on the season of the year.",
publisher = "Springer, Dordrecht",
journal = "Environmental Monitoring and Assessment",
title = "Long-term seasonal changes of the Danube River eco-chemical status in the region of Serbia",
volume = "184",
number = "5",
pages = "2805-2828",
doi = "10.1007/s10661-011-2153-0"
}

Ilijević, K., Gržetić, I., Zivadinovic, I.,& Popović, A. R.. (2012). Long-term seasonal changes of the Danube River eco-chemical status in the region of Serbia. in Environmental Monitoring and Assessment
Springer, Dordrecht., 184(5), 2805-2828.
https://doi.org/10.1007/s10661-011-2153-0

Ilijević K, Gržetić I, Zivadinovic I, Popović AR. Long-term seasonal changes of the Danube River eco-chemical status in the region of Serbia. in Environmental Monitoring and Assessment. 2012;184(5):2805-2828.
doi:10.1007/s10661-011-2153-0 .

Ilijević, Konstantin, Gržetić, Ivan, Zivadinovic, Ivan, Popović, Aleksandar R., "Long-term seasonal changes of the Danube River eco-chemical status in the region of Serbia" in Environmental Monitoring and Assessment, 184, no. 5 (2012):2805-2828,
https://doi.org/10.1007/s10661-011-2153-0 . .