TY  - JOUR
AU  - Popović, Daniela Ž.
AU  - Ivanović, Tijana G.
AU  - Miladinović, Jelena
AU  - Miladinović, Zoran P.
AU  - Pastor, Ferenc T.
AU  - Zlatić, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6994
AB  - The mean ionic activity coefficients of NaCl in a ternary system {yNaCl + (1 – y)Na2HPO4}(aq) were determined from measurements of the electromotive force (EMF) where the NaCl ionic strength fraction was y = (0.3012; 0.4015; 0.5011; 0.5988; 0.7706; 0.8997) in the range of total ionic strength of the solution Im = 0.0701–1.0161 mol kg–1 at temperature T = 298.15 K. A cell of the Na–ISE| (Formula presented.) |AgCl|Ag, type was employed for the EMF measurements. The experimental results from this work and the model of Pitzer’s were used to determine the mixing parameters. Good agreement was found between the experimental and calculated values of the mean ionic activity coefficients of NaCl with a standard deviation of fit 1.5 × 10–3. The values of the osmotic coefficients of the system {yNaCl + (1 – y)Na2HPO4}(aq) were estimated on the basis of the determined parameters and compared with literature data. The differences in the osmotic coefficients between the estimated and experimental values were negligible.
PB  - Pleiades Publishing
T2  - Russian Journal of Physical Chemistry A
T1  - Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq) at T = 298.15 K Determined by Electromotive Force Measurements
EP  - 2702
IS  - 12
SP  - 2693
VL  - 97
DO  - 10.1134/S0036024423120063
ER  - 

@article{
author = "Popović, Daniela Ž. and Ivanović, Tijana G. and Miladinović, Jelena and Miladinović, Zoran P. and Pastor, Ferenc T. and Zlatić, Aleksandra",
year = "2023",
abstract = "The mean ionic activity coefficients of NaCl in a ternary system {yNaCl + (1 – y)Na2HPO4}(aq) were determined from measurements of the electromotive force (EMF) where the NaCl ionic strength fraction was y = (0.3012; 0.4015; 0.5011; 0.5988; 0.7706; 0.8997) in the range of total ionic strength of the solution Im = 0.0701–1.0161 mol kg–1 at temperature T = 298.15 K. A cell of the Na–ISE| (Formula presented.) |AgCl|Ag, type was employed for the EMF measurements. The experimental results from this work and the model of Pitzer’s were used to determine the mixing parameters. Good agreement was found between the experimental and calculated values of the mean ionic activity coefficients of NaCl with a standard deviation of fit 1.5 × 10–3. The values of the osmotic coefficients of the system {yNaCl + (1 – y)Na2HPO4}(aq) were estimated on the basis of the determined parameters and compared with literature data. The differences in the osmotic coefficients between the estimated and experimental values were negligible.",
publisher = "Pleiades Publishing",
journal = "Russian Journal of Physical Chemistry A",
title = "Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq) at T = 298.15 K Determined by Electromotive Force Measurements",
pages = "2702-2693",
number = "12",
volume = "97",
doi = "10.1134/S0036024423120063"
}

Popović, D. Ž., Ivanović, T. G., Miladinović, J., Miladinović, Z. P., Pastor, F. T.,& Zlatić, A.. (2023). Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq) at T = 298.15 K Determined by Electromotive Force Measurements. in Russian Journal of Physical Chemistry A
Pleiades Publishing., 97(12), 2693-2702.
https://doi.org/10.1134/S0036024423120063

Popović DŽ, Ivanović TG, Miladinović J, Miladinović ZP, Pastor FT, Zlatić A. Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq) at T = 298.15 K Determined by Electromotive Force Measurements. in Russian Journal of Physical Chemistry A. 2023;97(12):2693-2702.
doi:10.1134/S0036024423120063 .

Popović, Daniela Ž., Ivanović, Tijana G., Miladinović, Jelena, Miladinović, Zoran P., Pastor, Ferenc T., Zlatić, Aleksandra, "Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq) at T = 298.15 K Determined by Electromotive Force Measurements" in Russian Journal of Physical Chemistry A, 97, no. 12 (2023):2693-2702,
https://doi.org/10.1134/S0036024423120063 . .

TY  - JOUR
AU  - Pastor, Ferenc T.
AU  - Dojčinović, Biljana P.
AU  - Kodranov, Igor D.
AU  - Gorjanović, Stanislava Ž.
AU  - Ivanović, Tijana
AU  - Popović, Daniela Ž.
AU  - Miladinović, Jelena
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6928
AB  - Due to the similar chemical properties of Ni2+ and Co2+, several dozens of adsorptive stripping voltammetric (AdSV) methods have been developed for their simultaneous determination. The question was would there be some benefits if a stripping method made for simultaneous determination of Ni2+ and Co2+ will be optimized for the determination of only one of them (Ni2+). It was found that the optimized method has for an order of magnitude lower LOQ (1.89×10−10 M), an order of magnitude lower influence of Co2+, and the applicability of one calibration line for four orders of magnitude of Ni2+ concentration. The influence of some common anions and cations has been examined. The developed method was successfully applied for nickel content determination in real samples. The suitability of the developed method for the determination of Co2+ from the same solution in the second run, upon optimizations of deposition potential and time, was also explored. The LOQ obtained for Co2+ (3.61×10−11 M) is almost two orders of magnitude lower than LOQ of the method for simultaneous determination of both cations and, its LOD and LOQ are among few lowest obtained by AdSV methods for Co2+ determination. The developed method for Ni2+ and Co2+ determination from the same solution in two successive runs has significantly better analytical performances than the starting method for their simultaneous determination in one run.
PB  - John Wiley and Sons Inc.
T2  - Electroanalysis
T1  - 2 in 1 versus 1 plus 1 – Outcomes of the transformation of adsorptive stripping method for the Ni2+ and Co2+ determination
SP  - e202300259
DO  - 10.1002/elan.202300259
ER  - 

@article{
author = "Pastor, Ferenc T. and Dojčinović, Biljana P. and Kodranov, Igor D. and Gorjanović, Stanislava Ž. and Ivanović, Tijana and Popović, Daniela Ž. and Miladinović, Jelena",
year = "2023",
abstract = "Due to the similar chemical properties of Ni2+ and Co2+, several dozens of adsorptive stripping voltammetric (AdSV) methods have been developed for their simultaneous determination. The question was would there be some benefits if a stripping method made for simultaneous determination of Ni2+ and Co2+ will be optimized for the determination of only one of them (Ni2+). It was found that the optimized method has for an order of magnitude lower LOQ (1.89×10−10 M), an order of magnitude lower influence of Co2+, and the applicability of one calibration line for four orders of magnitude of Ni2+ concentration. The influence of some common anions and cations has been examined. The developed method was successfully applied for nickel content determination in real samples. The suitability of the developed method for the determination of Co2+ from the same solution in the second run, upon optimizations of deposition potential and time, was also explored. The LOQ obtained for Co2+ (3.61×10−11 M) is almost two orders of magnitude lower than LOQ of the method for simultaneous determination of both cations and, its LOD and LOQ are among few lowest obtained by AdSV methods for Co2+ determination. The developed method for Ni2+ and Co2+ determination from the same solution in two successive runs has significantly better analytical performances than the starting method for their simultaneous determination in one run.",
publisher = "John Wiley and Sons Inc.",
journal = "Electroanalysis",
title = "2 in 1 versus 1 plus 1 – Outcomes of the transformation of adsorptive stripping method for the Ni2+ and Co2+ determination",
pages = "e202300259",
doi = "10.1002/elan.202300259"
}

Pastor, F. T., Dojčinović, B. P., Kodranov, I. D., Gorjanović, S. Ž., Ivanović, T., Popović, D. Ž.,& Miladinović, J.. (2023). 2 in 1 versus 1 plus 1 – Outcomes of the transformation of adsorptive stripping method for the Ni2+ and Co2+ determination. in Electroanalysis
John Wiley and Sons Inc.., e202300259.
https://doi.org/10.1002/elan.202300259

Pastor FT, Dojčinović BP, Kodranov ID, Gorjanović SŽ, Ivanović T, Popović DŽ, Miladinović J. 2 in 1 versus 1 plus 1 – Outcomes of the transformation of adsorptive stripping method for the Ni2+ and Co2+ determination. in Electroanalysis. 2023;:e202300259.
doi:10.1002/elan.202300259 .

Pastor, Ferenc T., Dojčinović, Biljana P., Kodranov, Igor D., Gorjanović, Stanislava Ž., Ivanović, Tijana, Popović, Daniela Ž., Miladinović, Jelena, "2 in 1 versus 1 plus 1 – Outcomes of the transformation of adsorptive stripping method for the Ni2+ and Co2+ determination" in Electroanalysis (2023):e202300259,
https://doi.org/10.1002/elan.202300259 . .

TY  - JOUR
AU  - Ivanovic, Tijana
AU  - Popović, Daniela
AU  - Miladinović, Jelena
AU  - Rard, Joseph A.
AU  - Miladinovic, Zoran P.
AU  - Pastor, Ferenc T.
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4748
AB  - Isopiestic measurements have been made for aqueous solutions of the common sodium cation mixtures of NaH2PO4 and Na2HPO4 at T = 298.15 +/- 0.01 K, at NaH2PO4 ionic strength fractions y = (0, 0.24851, 0.49862, 0.74544, and 1), where the ionic strength fractions were calculated by assuming complete electrolytic dissociation of NaH2PO4 as 1:1 and Na2HPO4 as 2:1 electrolytes; CaCl2(aq) was used as the reference standard solution. Model parameters for an extended form of Pitzer's ion-interaction model and also for the Clegg-Pitzer-Brimblecombe equations based on the mole-fraction-composition scale were evaluated at T = 298.15 K for both NaH2PO4(aq) and Na2HPO4(aq) using the isopiestic results from this study (17 values each) together with numerous critically assessed osmotic coefficients for both electrolytes taken from the published literature. The thermodynamic models for NaH2PO4(aq) extend to m = 7.5 mol.kg(-1), whereas those for Na2HPO4(aq) extend to m = 2.6050 mol.kg(-1), which is well above the solubility limit for the thermodynamically stable phase Na2HPO4 center dot 12H(2)O(cr). The 51 osmotic coefficients for the ternary mixtures were treated with these two models together with Scatchard's neutral-electrolyte model; one previous set of osmotic coefficient values for {yNaH(2)PO(4) + (1 - y)Na2HPO4}(aq) mixtures was found in the literature [Scharge, T.; et al. J. Chem. Thermodyn. 2015, 80, 172-183], and hence an analysis and comparison were made of our results with theirs.
T2  - Journal of Chemical and Engineering Data
T1  - Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K
EP  - 5153
IS  - 11
SP  - 5137
VL  - 65
DO  - 10.1021/acs.jced.0c00281
ER  - 

@article{
author = "Ivanovic, Tijana and Popović, Daniela and Miladinović, Jelena and Rard, Joseph A. and Miladinovic, Zoran P. and Pastor, Ferenc T.",
year = "2020",
abstract = "Isopiestic measurements have been made for aqueous solutions of the common sodium cation mixtures of NaH2PO4 and Na2HPO4 at T = 298.15 +/- 0.01 K, at NaH2PO4 ionic strength fractions y = (0, 0.24851, 0.49862, 0.74544, and 1), where the ionic strength fractions were calculated by assuming complete electrolytic dissociation of NaH2PO4 as 1:1 and Na2HPO4 as 2:1 electrolytes; CaCl2(aq) was used as the reference standard solution. Model parameters for an extended form of Pitzer's ion-interaction model and also for the Clegg-Pitzer-Brimblecombe equations based on the mole-fraction-composition scale were evaluated at T = 298.15 K for both NaH2PO4(aq) and Na2HPO4(aq) using the isopiestic results from this study (17 values each) together with numerous critically assessed osmotic coefficients for both electrolytes taken from the published literature. The thermodynamic models for NaH2PO4(aq) extend to m = 7.5 mol.kg(-1), whereas those for Na2HPO4(aq) extend to m = 2.6050 mol.kg(-1), which is well above the solubility limit for the thermodynamically stable phase Na2HPO4 center dot 12H(2)O(cr). The 51 osmotic coefficients for the ternary mixtures were treated with these two models together with Scatchard's neutral-electrolyte model; one previous set of osmotic coefficient values for {yNaH(2)PO(4) + (1 - y)Na2HPO4}(aq) mixtures was found in the literature [Scharge, T.; et al. J. Chem. Thermodyn. 2015, 80, 172-183], and hence an analysis and comparison were made of our results with theirs.",
journal = "Journal of Chemical and Engineering Data",
title = "Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K",
pages = "5153-5137",
number = "11",
volume = "65",
doi = "10.1021/acs.jced.0c00281"
}

Ivanovic, T., Popović, D., Miladinović, J., Rard, J. A., Miladinovic, Z. P.,& Pastor, F. T.. (2020). Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K. in Journal of Chemical and Engineering Data, 65(11), 5137-5153.
https://doi.org/10.1021/acs.jced.0c00281

Ivanovic T, Popović D, Miladinović J, Rard JA, Miladinovic ZP, Pastor FT. Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K. in Journal of Chemical and Engineering Data. 2020;65(11):5137-5153.
doi:10.1021/acs.jced.0c00281 .

Ivanovic, Tijana, Popović, Daniela, Miladinović, Jelena, Rard, Joseph A., Miladinovic, Zoran P., Pastor, Ferenc T., "Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K" in Journal of Chemical and Engineering Data, 65, no. 11 (2020):5137-5153,
https://doi.org/10.1021/acs.jced.0c00281 . .