TY  - JOUR
AU  - Rajković, Miloš
AU  - Stojanović, M.
AU  - Eremić-Savković, Maja
AU  - Lačnjevac, Uroš Č.
AU  - Tošković, D.V.
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3183
AB  - In this paper the content of metal in drinking water was determined in two samples, one from 2008 and other from 2010, by the indirect method based on the analysis of scale, which had originally been suggested by Rajkovic and associates. Received results confirmed that drinking water according to the metal content was of constant level (metals are lower than MAC values), but with increased content of U. By the method of fraction extraction it was proved that increased content of U regarded mainly to natural U, and less to U of anthropogenic origin. The increased content of isotope 90Sr was also noticed, probably as the effect of increased presence of alkaline earth metals. The analysis structure of scale by the usage of SEM determined that the dominant form was calcium carbonate of crystal structure of hexagonal shape which corresponded to calcite. By Röentgen diffraction analysis of dust it was determined the content of calcite which contained CaO; MgO; FeO; MnO and CO2 and it belongs to medium manganese calcites. All the analyses done in this paper, confirmed that indirect method of determination of metal content had been reliable and applicable for determination of low concentrations of metals in drinking water
PB  - University of East Sarajevo, Faculty of Technology
T2  - Journal of Engineering & Processing Management
T1  - Determination of change in content of heavy and radioactive metals in drinking water by an indirect analysis method based on scale tests
EP  - 156
IS  - 1
SP  - 127
VL  - 5
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3183
ER  - 

@article{
author = "Rajković, Miloš and Stojanović, M. and Eremić-Savković, Maja and Lačnjevac, Uroš Č. and Tošković, D.V.",
year = "2013",
abstract = "In this paper the content of metal in drinking water was determined in two samples, one from 2008 and other from 2010, by the indirect method based on the analysis of scale, which had originally been suggested by Rajkovic and associates. Received results confirmed that drinking water according to the metal content was of constant level (metals are lower than MAC values), but with increased content of U. By the method of fraction extraction it was proved that increased content of U regarded mainly to natural U, and less to U of anthropogenic origin. The increased content of isotope 90Sr was also noticed, probably as the effect of increased presence of alkaline earth metals. The analysis structure of scale by the usage of SEM determined that the dominant form was calcium carbonate of crystal structure of hexagonal shape which corresponded to calcite. By Röentgen diffraction analysis of dust it was determined the content of calcite which contained CaO; MgO; FeO; MnO and CO2 and it belongs to medium manganese calcites. All the analyses done in this paper, confirmed that indirect method of determination of metal content had been reliable and applicable for determination of low concentrations of metals in drinking water",
publisher = "University of East Sarajevo, Faculty of Technology",
journal = "Journal of Engineering & Processing Management",
title = "Determination of change in content of heavy and radioactive metals in drinking water by an indirect analysis method based on scale tests",
pages = "156-127",
number = "1",
volume = "5",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3183"
}

Rajković, M., Stojanović, M., Eremić-Savković, M., Lačnjevac, U. Č.,& Tošković, D.V.. (2013). Determination of change in content of heavy and radioactive metals in drinking water by an indirect analysis method based on scale tests. in Journal of Engineering & Processing Management
University of East Sarajevo, Faculty of Technology., 5(1), 127-156.
https://hdl.handle.net/21.15107/rcub_agrospace_3183

Rajković M, Stojanović M, Eremić-Savković M, Lačnjevac UČ, Tošković D. Determination of change in content of heavy and radioactive metals in drinking water by an indirect analysis method based on scale tests. in Journal of Engineering & Processing Management. 2013;5(1):127-156.
https://hdl.handle.net/21.15107/rcub_agrospace_3183 .

Rajković, Miloš, Stojanović, M., Eremić-Savković, Maja, Lačnjevac, Uroš Č., Tošković, D.V., "Determination of change in content of heavy and radioactive metals in drinking water by an indirect analysis method based on scale tests" in Journal of Engineering & Processing Management, 5, no. 1 (2013):127-156,
https://hdl.handle.net/21.15107/rcub_agrospace_3183 .

TY  - JOUR
AU  - Rajković, Miloš
AU  - Stojanović, M.
AU  - Glamočlija, Djordje
AU  - Tošković, D.V.
AU  - Miletić, V.
AU  - Stefanović, V.
AU  - Lačnjevac, Časlav
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2835
AB  - Plants have an important role in circuit of heavy metals in nature. Heavy metals are input into food chains mainly through plants. One of the ways in which heavy metals are input into food products is through contaminated plants and animals used for their production. So, if the plants are cultivated on soil with high content of heavy metals then one part of these metals will be input into their organism. The usage of such plants for domestic animals nourishment will lead to their contamination with heavy metals. Meat, milk and eggs of these animals will be of poor quality considering the high level of heavy metals in them. The other, not less significant way of contamination of food products with heavy metals is the technological process in which they have been made. Namely, due to some irregularities in technological processes it can come to input of certain metals in amounts which are higher than regulated. It can come to contamination by metal particles during its mincing in the mill, by irregular keeping and storage, and as one of the main sources of contamination is the air in the industrial zones. Plants assimilate undesired metals from the soil, and in certain conditions through leaves. These elements are accumulated largely in the root area than in organs above earth. That is the reason why the knowledge of mechanisms of accumulation, distribution and metabolism of heavy metals in plants is of high ecological, scientific and practical significance. Especially because heavy metals are among toxic matters which pollute the environment. This is the reason why wheat is selected for the analysis of the influence of heavy metals on plant culture in this paper. Wheat has dominant role in world’s diet, characteristic of strategic product and it covers significant part (almost one third) of total agricultural area of plants culture planted.
PB  - University of East Sarajevo, Faculty of Technology
T2  - Journal of Engineering & Processing Management
T1  - Wheat samples and heavy metals
EP  - 126
IS  - 1
SP  - 85
VL  - 4
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_2835
ER  - 

@article{
author = "Rajković, Miloš and Stojanović, M. and Glamočlija, Djordje and Tošković, D.V. and Miletić, V. and Stefanović, V. and Lačnjevac, Časlav",
year = "2012",
abstract = "Plants have an important role in circuit of heavy metals in nature. Heavy metals are input into food chains mainly through plants. One of the ways in which heavy metals are input into food products is through contaminated plants and animals used for their production. So, if the plants are cultivated on soil with high content of heavy metals then one part of these metals will be input into their organism. The usage of such plants for domestic animals nourishment will lead to their contamination with heavy metals. Meat, milk and eggs of these animals will be of poor quality considering the high level of heavy metals in them. The other, not less significant way of contamination of food products with heavy metals is the technological process in which they have been made. Namely, due to some irregularities in technological processes it can come to input of certain metals in amounts which are higher than regulated. It can come to contamination by metal particles during its mincing in the mill, by irregular keeping and storage, and as one of the main sources of contamination is the air in the industrial zones. Plants assimilate undesired metals from the soil, and in certain conditions through leaves. These elements are accumulated largely in the root area than in organs above earth. That is the reason why the knowledge of mechanisms of accumulation, distribution and metabolism of heavy metals in plants is of high ecological, scientific and practical significance. Especially because heavy metals are among toxic matters which pollute the environment. This is the reason why wheat is selected for the analysis of the influence of heavy metals on plant culture in this paper. Wheat has dominant role in world’s diet, characteristic of strategic product and it covers significant part (almost one third) of total agricultural area of plants culture planted.",
publisher = "University of East Sarajevo, Faculty of Technology",
journal = "Journal of Engineering & Processing Management",
title = "Wheat samples and heavy metals",
pages = "126-85",
number = "1",
volume = "4",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_2835"
}

Rajković, M., Stojanović, M., Glamočlija, D., Tošković, D.V., Miletić, V., Stefanović, V.,& Lačnjevac, Č.. (2012). Wheat samples and heavy metals. in Journal of Engineering & Processing Management
University of East Sarajevo, Faculty of Technology., 4(1), 85-126.
https://hdl.handle.net/21.15107/rcub_agrospace_2835

Rajković M, Stojanović M, Glamočlija D, Tošković D, Miletić V, Stefanović V, Lačnjevac Č. Wheat samples and heavy metals. in Journal of Engineering & Processing Management. 2012;4(1):85-126.
https://hdl.handle.net/21.15107/rcub_agrospace_2835 .

Rajković, Miloš, Stojanović, M., Glamočlija, Djordje, Tošković, D.V., Miletić, V., Stefanović, V., Lačnjevac, Časlav, "Wheat samples and heavy metals" in Journal of Engineering & Processing Management, 4, no. 1 (2012):85-126,
https://hdl.handle.net/21.15107/rcub_agrospace_2835 .

TY  - JOUR
AU  - Rajković, Miloš
AU  - Sredović, Ivana
AU  - Milojković, Sladjana
AU  - Tošković, D.V.
AU  - Stanojević, Dušan D.
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2452
AB  - Preparation of samples by microwave technique consists of large number of phases, from taking samples till receiving homogeneous solution for instrumental analysis. Samples preparation can include combination of drying, wetting, extraction, digestion, analytic separation and solvent removing. The analysis of content of heavy metals in potato from Braničevo Region by the usage of atomic absorption spectrophotometry (AAS) showed that certain samples of potato contain more than 1ppm of lead, and that certain samples contain amount of lead which is even 4 times higher than allowed MDK value. As for cadmium, all samples contains amount which is 7 to even 20 times higher than allowed MDK value. Chrome and nickel are not allowed by Law to be in products for human diet, and by this analysis it is determined that these samples contain chrome (total). In none of these samples was determined the presence of nickel. Received results of the analysis showed that large amounts of chemical (mineral) fertilizers were used at these soils. According to received results it can be concluded that the soil as well as increased usage of phosphate fertilizers are main cause for the presence of heavy metals in potato
PB  - University of East Sarajevo, Faculty of Technology
T2  - Journal of Engineering & Processing Management
T1  - The usage of microwave technique to destroy potato samples in order to determine heavy metals by atomic absorption spectrofotometry
EP  - 58
IS  - 1
SP  - 43
VL  - 3
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_2452
ER  - 

@article{
author = "Rajković, Miloš and Sredović, Ivana and Milojković, Sladjana and Tošković, D.V. and Stanojević, Dušan D.",
year = "2011",
abstract = "Preparation of samples by microwave technique consists of large number of phases, from taking samples till receiving homogeneous solution for instrumental analysis. Samples preparation can include combination of drying, wetting, extraction, digestion, analytic separation and solvent removing. The analysis of content of heavy metals in potato from Braničevo Region by the usage of atomic absorption spectrophotometry (AAS) showed that certain samples of potato contain more than 1ppm of lead, and that certain samples contain amount of lead which is even 4 times higher than allowed MDK value. As for cadmium, all samples contains amount which is 7 to even 20 times higher than allowed MDK value. Chrome and nickel are not allowed by Law to be in products for human diet, and by this analysis it is determined that these samples contain chrome (total). In none of these samples was determined the presence of nickel. Received results of the analysis showed that large amounts of chemical (mineral) fertilizers were used at these soils. According to received results it can be concluded that the soil as well as increased usage of phosphate fertilizers are main cause for the presence of heavy metals in potato",
publisher = "University of East Sarajevo, Faculty of Technology",
journal = "Journal of Engineering & Processing Management",
title = "The usage of microwave technique to destroy potato samples in order to determine heavy metals by atomic absorption spectrofotometry",
pages = "58-43",
number = "1",
volume = "3",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_2452"
}

Rajković, M., Sredović, I., Milojković, S., Tošković, D.V.,& Stanojević, D. D.. (2011). The usage of microwave technique to destroy potato samples in order to determine heavy metals by atomic absorption spectrofotometry. in Journal of Engineering & Processing Management
University of East Sarajevo, Faculty of Technology., 3(1), 43-58.
https://hdl.handle.net/21.15107/rcub_agrospace_2452

Rajković M, Sredović I, Milojković S, Tošković D, Stanojević DD. The usage of microwave technique to destroy potato samples in order to determine heavy metals by atomic absorption spectrofotometry. in Journal of Engineering & Processing Management. 2011;3(1):43-58.
https://hdl.handle.net/21.15107/rcub_agrospace_2452 .

Rajković, Miloš, Sredović, Ivana, Milojković, Sladjana, Tošković, D.V., Stanojević, Dušan D., "The usage of microwave technique to destroy potato samples in order to determine heavy metals by atomic absorption spectrofotometry" in Journal of Engineering & Processing Management, 3, no. 1 (2011):43-58,
https://hdl.handle.net/21.15107/rcub_agrospace_2452 .

TY  - JOUR
AU  - Rajković, Miloš
AU  - Tošković, D.V.
AU  - Stanojević, Dušan D.
AU  - Lačnjevac, Časlav
PY  - 2009
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1861
AB  - Investigations, conducted in this study showed that waste phosphogypsum-dihydrate represents a burden which even must not be kept in deposits because of its large quantity in relation to the main product – phosphoric acid, as well as because of great impact of a phosphogypsum deposit on the environment. By the proposed procedure, calcium-sulphate dehydrate is transformed into a far purer α-hemihydrate which, with its physic-chemical characteristics, approaches natural gypsum and contains additional components which enable formation of small-grain phosphogypsum which may be utilised in construction industry. Test installation, given in this study, is highly automated and designed in such way to be operated by only one person. The obtained α-hemihydrate may be utilised for obtaining of gypsum blocks and dry hemihydrate
PB  - University of East Sarajevo, Faculty of Technology
T2  - Journal of Engineering & Processing Management
T1  - A new procedure for obtaining calcium sulphate α-hemihydrate on the basis of waste phosphogypsum
EP  - 113
IS  - 1
SP  - 99
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_1861
ER  - 

@article{
author = "Rajković, Miloš and Tošković, D.V. and Stanojević, Dušan D. and Lačnjevac, Časlav",
year = "2009",
abstract = "Investigations, conducted in this study showed that waste phosphogypsum-dihydrate represents a burden which even must not be kept in deposits because of its large quantity in relation to the main product – phosphoric acid, as well as because of great impact of a phosphogypsum deposit on the environment. By the proposed procedure, calcium-sulphate dehydrate is transformed into a far purer α-hemihydrate which, with its physic-chemical characteristics, approaches natural gypsum and contains additional components which enable formation of small-grain phosphogypsum which may be utilised in construction industry. Test installation, given in this study, is highly automated and designed in such way to be operated by only one person. The obtained α-hemihydrate may be utilised for obtaining of gypsum blocks and dry hemihydrate",
publisher = "University of East Sarajevo, Faculty of Technology",
journal = "Journal of Engineering & Processing Management",
title = "A new procedure for obtaining calcium sulphate α-hemihydrate on the basis of waste phosphogypsum",
pages = "113-99",
number = "1",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_1861"
}

Rajković, M., Tošković, D.V., Stanojević, D. D.,& Lačnjevac, Č.. (2009). A new procedure for obtaining calcium sulphate α-hemihydrate on the basis of waste phosphogypsum. in Journal of Engineering & Processing Management
University of East Sarajevo, Faculty of Technology., 1(1), 99-113.
https://hdl.handle.net/21.15107/rcub_agrospace_1861

Rajković M, Tošković D, Stanojević DD, Lačnjevac Č. A new procedure for obtaining calcium sulphate α-hemihydrate on the basis of waste phosphogypsum. in Journal of Engineering & Processing Management. 2009;1(1):99-113.
https://hdl.handle.net/21.15107/rcub_agrospace_1861 .

Rajković, Miloš, Tošković, D.V., Stanojević, Dušan D., Lačnjevac, Časlav, "A new procedure for obtaining calcium sulphate α-hemihydrate on the basis of waste phosphogypsum" in Journal of Engineering & Processing Management, 1, no. 1 (2009):99-113,
https://hdl.handle.net/21.15107/rcub_agrospace_1861 .

TY  - JOUR
AU  - Stanojević, Dušan D.
AU  - Rajković, Miloš
AU  - Tošković, D.V.
AU  - Tomić, M.V.
PY  - 2009
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1860
AB  - Nowadays, due to using many rare metals in the most advanced technologies, the demand for these metals is increasing. Rare metals, however, mostly don’t show the property of creating their own mineral deposits, making their production more complicated. Some rare metals, e.g. gallium, germanium, indium and thallium usually accompany zinc ore. In the procedure of hydrometallurgical zinc production, the concentrating of these metals occurs in some interproduct processes, out of which they can be extracted. The possibility of obtaining rare metals from these sources is directly caused by the contents and quantities in specific interproducts. This paper deals with controlling the distribution of rare metals Ga, Ge, In and Tl in hydrometallurgical zinc production, in zinc plant Chemical Industry „Zorka„ in Šabac, in order to determine the places and concentration level of controlled rare metals. It is determined that In and Ga are significantly concentrated in specific output mud and precipitates from the process, and that they exist in commercially significant quantities on existing depots of these materials, while it is not the case for Ga and Tl.
PB  - University of East Sarajevo, Faculty of Technology
T2  - Journal of Engineering & Processing Management
T1  - Determination of germanium, gallium, indium and thallium distribution in interproducts of hydrometallurgical zinc production
EP  - 97
IS  - 1
SP  - 85
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_1860
ER  - 

@article{
author = "Stanojević, Dušan D. and Rajković, Miloš and Tošković, D.V. and Tomić, M.V.",
year = "2009",
abstract = "Nowadays, due to using many rare metals in the most advanced technologies, the demand for these metals is increasing. Rare metals, however, mostly don’t show the property of creating their own mineral deposits, making their production more complicated. Some rare metals, e.g. gallium, germanium, indium and thallium usually accompany zinc ore. In the procedure of hydrometallurgical zinc production, the concentrating of these metals occurs in some interproduct processes, out of which they can be extracted. The possibility of obtaining rare metals from these sources is directly caused by the contents and quantities in specific interproducts. This paper deals with controlling the distribution of rare metals Ga, Ge, In and Tl in hydrometallurgical zinc production, in zinc plant Chemical Industry „Zorka„ in Šabac, in order to determine the places and concentration level of controlled rare metals. It is determined that In and Ga are significantly concentrated in specific output mud and precipitates from the process, and that they exist in commercially significant quantities on existing depots of these materials, while it is not the case for Ga and Tl.",
publisher = "University of East Sarajevo, Faculty of Technology",
journal = "Journal of Engineering & Processing Management",
title = "Determination of germanium, gallium, indium and thallium distribution in interproducts of hydrometallurgical zinc production",
pages = "97-85",
number = "1",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_1860"
}

Stanojević, D. D., Rajković, M., Tošković, D.V.,& Tomić, M.V.. (2009). Determination of germanium, gallium, indium and thallium distribution in interproducts of hydrometallurgical zinc production. in Journal of Engineering & Processing Management
University of East Sarajevo, Faculty of Technology., 1(1), 85-97.
https://hdl.handle.net/21.15107/rcub_agrospace_1860

Stanojević DD, Rajković M, Tošković D, Tomić M. Determination of germanium, gallium, indium and thallium distribution in interproducts of hydrometallurgical zinc production. in Journal of Engineering & Processing Management. 2009;1(1):85-97.
https://hdl.handle.net/21.15107/rcub_agrospace_1860 .

Stanojević, Dušan D., Rajković, Miloš, Tošković, D.V., Tomić, M.V., "Determination of germanium, gallium, indium and thallium distribution in interproducts of hydrometallurgical zinc production" in Journal of Engineering & Processing Management, 1, no. 1 (2009):85-97,
https://hdl.handle.net/21.15107/rcub_agrospace_1860 .

TY  - JOUR
AU  - Rajković, Miloš
AU  - Stanojević, Dušan D.
AU  - Novaković, I.D.
AU  - Tošković, D.V.
AU  - Sudar, M.M.
PY  - 2009
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1859
AB  - The amount of total acids in must is in most number of cases between 5 and 8 g/dm3 . Wines in general possess a little fewer acids than must, by Regulation the least acidity, expressed as tartaric acid is for all kinds of wine 4.5 g/dm3 , because a part of tartaric acids sediments as salt (tartar) in the process of the alcohol fermentation. For wines that possess less than 4 g/dm3 of total acids there is a doubt are they of natural BACKGROUND: . Because of that the aim of this work was determination of total acids in diferent sorts of red wines and to determinate their BACKGROUND:  using gained data. For determinating total acids in white wine neutralization method was used. As potentiometric titration for pH 7.00 is precise and accurate method and values of content of total acids in wine, exppressed by tartaric acid, are given by these results. The analisys of differential potentiometric curves indicates that these curves can give the answer to the questions: are there inorganic supstances, amino groups and phenols present in analised samples.
PB  - University of East Sarajevo, Faculty of Technology
T2  - Journal of Engineering & Processing Management
T1  - The determinations of total acids in red wine
EP  - 153
IS  - 2
SP  - 140
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_1859
ER  - 

@article{
author = "Rajković, Miloš and Stanojević, Dušan D. and Novaković, I.D. and Tošković, D.V. and Sudar, M.M.",
year = "2009",
abstract = "The amount of total acids in must is in most number of cases between 5 and 8 g/dm3 . Wines in general possess a little fewer acids than must, by Regulation the least acidity, expressed as tartaric acid is for all kinds of wine 4.5 g/dm3 , because a part of tartaric acids sediments as salt (tartar) in the process of the alcohol fermentation. For wines that possess less than 4 g/dm3 of total acids there is a doubt are they of natural BACKGROUND: . Because of that the aim of this work was determination of total acids in diferent sorts of red wines and to determinate their BACKGROUND:  using gained data. For determinating total acids in white wine neutralization method was used. As potentiometric titration for pH 7.00 is precise and accurate method and values of content of total acids in wine, exppressed by tartaric acid, are given by these results. The analisys of differential potentiometric curves indicates that these curves can give the answer to the questions: are there inorganic supstances, amino groups and phenols present in analised samples.",
publisher = "University of East Sarajevo, Faculty of Technology",
journal = "Journal of Engineering & Processing Management",
title = "The determinations of total acids in red wine",
pages = "153-140",
number = "2",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_1859"
}

Rajković, M., Stanojević, D. D., Novaković, I.D., Tošković, D.V.,& Sudar, M.M.. (2009). The determinations of total acids in red wine. in Journal of Engineering & Processing Management
University of East Sarajevo, Faculty of Technology., 1(2), 140-153.
https://hdl.handle.net/21.15107/rcub_agrospace_1859

Rajković M, Stanojević DD, Novaković I, Tošković D, Sudar M. The determinations of total acids in red wine. in Journal of Engineering & Processing Management. 2009;1(2):140-153.
https://hdl.handle.net/21.15107/rcub_agrospace_1859 .

Rajković, Miloš, Stanojević, Dušan D., Novaković, I.D., Tošković, D.V., Sudar, M.M., "The determinations of total acids in red wine" in Journal of Engineering & Processing Management, 1, no. 2 (2009):140-153,
https://hdl.handle.net/21.15107/rcub_agrospace_1859 .