TY  - JOUR
AU  - Demajo, Miroslav A.
AU  - Cvetićanin, Jelena M.
AU  - Stoiljković, Milovan
AU  - Trpkov, Đorđe
AU  - Andrić, Velibor
AU  - Onjia, Antonije
AU  - Nešković, Olivera M.
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1903
AB  - In this study, we analysed pellets from long-eared owls (Asio otus) collected from four localities in Belgrade (Serbia). The pellets contained the remains of prey, namely voles (Arvicola terrestris) and field mice (Apodemus agrarius). The concentrations of 14 elements (Ca, P, Mg, Na, K, Fe, Zn, Sr, Ba, Mn, Ti, Cu, Si, B) were evaluated in whole pellets and in samples containing only bone tissue, which were dissected from the whole pellet. The increased levels of certain elements, including Mn, Zn, Ba, Cu and radioactive K-40, indicate contamination of the soil by various sources, such as industrial plants and agricultural practices. From the results presented in this article, we suggest that the analysis of owl pellets may indicate the quality of the local environment.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Chemistry and Ecology
T1  - Detection of elements and radioactivity in pellets from long-eared owls (Asio otus) inhabiting the city of Belgrade (Serbia)
EP  - 400
IS  - 5
SP  - 393
VL  - 27
DO  - 10.1080/02757540.2011.607440
ER  - 

@article{
author = "Demajo, Miroslav A. and Cvetićanin, Jelena M. and Stoiljković, Milovan and Trpkov, Đorđe and Andrić, Velibor and Onjia, Antonije and Nešković, Olivera M.",
year = "2011",
abstract = "In this study, we analysed pellets from long-eared owls (Asio otus) collected from four localities in Belgrade (Serbia). The pellets contained the remains of prey, namely voles (Arvicola terrestris) and field mice (Apodemus agrarius). The concentrations of 14 elements (Ca, P, Mg, Na, K, Fe, Zn, Sr, Ba, Mn, Ti, Cu, Si, B) were evaluated in whole pellets and in samples containing only bone tissue, which were dissected from the whole pellet. The increased levels of certain elements, including Mn, Zn, Ba, Cu and radioactive K-40, indicate contamination of the soil by various sources, such as industrial plants and agricultural practices. From the results presented in this article, we suggest that the analysis of owl pellets may indicate the quality of the local environment.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Chemistry and Ecology",
title = "Detection of elements and radioactivity in pellets from long-eared owls (Asio otus) inhabiting the city of Belgrade (Serbia)",
pages = "400-393",
number = "5",
volume = "27",
doi = "10.1080/02757540.2011.607440"
}

Demajo, M. A., Cvetićanin, J. M., Stoiljković, M., Trpkov, Đ., Andrić, V., Onjia, A.,& Nešković, O. M.. (2011). Detection of elements and radioactivity in pellets from long-eared owls (Asio otus) inhabiting the city of Belgrade (Serbia). in Chemistry and Ecology
Taylor & Francis Ltd, Abingdon., 27(5), 393-400.
https://doi.org/10.1080/02757540.2011.607440

Demajo MA, Cvetićanin JM, Stoiljković M, Trpkov Đ, Andrić V, Onjia A, Nešković OM. Detection of elements and radioactivity in pellets from long-eared owls (Asio otus) inhabiting the city of Belgrade (Serbia). in Chemistry and Ecology. 2011;27(5):393-400.
doi:10.1080/02757540.2011.607440 .

Demajo, Miroslav A., Cvetićanin, Jelena M., Stoiljković, Milovan, Trpkov, Đorđe, Andrić, Velibor, Onjia, Antonije, Nešković, Olivera M., "Detection of elements and radioactivity in pellets from long-eared owls (Asio otus) inhabiting the city of Belgrade (Serbia)" in Chemistry and Ecology, 27, no. 5 (2011):393-400,
https://doi.org/10.1080/02757540.2011.607440 . .

TY  - CONF
AU  - Demajo, Miroslav
AU  - Cvetićanin, Jelena
AU  - Stoiljković, Milovan
AU  - Trpkov, Đorđe
AU  - Andrić, Velibor
AU  - Onjia, Antonije
AU  - Nešković, Olivera
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7228
AB  - Pellets from Long-Eared Owls (Asio otus) were collected from four localities in the
city and in the vicinity of Belgrade. The element content in the pellets was
analyzed. The results indicate that owl pellets may be useful for monitoring
environmental conditions, specifically soil quality.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - Physical Chemistry 2010 : proceedings / 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 21-24 September 2010, Belgrade
T1  - Pellets from long-eared owls (Asio Otus) as indicators of soil quality
EP  - 551
SP  - 549
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7228
ER  - 

@conference{
author = "Demajo, Miroslav and Cvetićanin, Jelena and Stoiljković, Milovan and Trpkov, Đorđe and Andrić, Velibor and Onjia, Antonije and Nešković, Olivera",
year = "2010",
abstract = "Pellets from Long-Eared Owls (Asio otus) were collected from four localities in the
city and in the vicinity of Belgrade. The element content in the pellets was
analyzed. The results indicate that owl pellets may be useful for monitoring
environmental conditions, specifically soil quality.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "Physical Chemistry 2010 : proceedings / 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 21-24 September 2010, Belgrade",
title = "Pellets from long-eared owls (Asio Otus) as indicators of soil quality",
pages = "551-549",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7228"
}

Demajo, M., Cvetićanin, J., Stoiljković, M., Trpkov, Đ., Andrić, V., Onjia, A.,& Nešković, O.. (2010). Pellets from long-eared owls (Asio Otus) as indicators of soil quality. in Physical Chemistry 2010 : proceedings / 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 21-24 September 2010, Belgrade
Belgrade : Society of Physical Chemists of Serbia., 1, 549-551.
https://hdl.handle.net/21.15107/rcub_technorep_7228

Demajo M, Cvetićanin J, Stoiljković M, Trpkov Đ, Andrić V, Onjia A, Nešković O. Pellets from long-eared owls (Asio Otus) as indicators of soil quality. in Physical Chemistry 2010 : proceedings / 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 21-24 September 2010, Belgrade. 2010;1:549-551.
https://hdl.handle.net/21.15107/rcub_technorep_7228 .

Demajo, Miroslav, Cvetićanin, Jelena, Stoiljković, Milovan, Trpkov, Đorđe, Andrić, Velibor, Onjia, Antonije, Nešković, Olivera, "Pellets from long-eared owls (Asio Otus) as indicators of soil quality" in Physical Chemistry 2010 : proceedings / 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 21-24 September 2010, Belgrade, 1 (2010):549-551,
https://hdl.handle.net/21.15107/rcub_technorep_7228 .

TY  - JOUR
AU  - Cvetićanin, Jelena M.
AU  - Veličković, Suzana
AU  - Đorđević, Vesna R.
AU  - Đustebek, Jasmina B.
AU  - Veljković, Miomir V.
AU  - Perić-Grujić, Aleksandra
AU  - Nešković, Olivera M.
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1322
AB  - Using the ion implantation technique (introducing negatively charged fullerene into a low temperature lithium plasma column by a strong axial magnetic field) endohedral fullerenes Li"C-70, Li-2"C-70 and Li-3"C-70 were produced. Mass spectral studies (both TIMS-thermal ionization mass spectrometry and MALDI TOF MS - matrix assisted laser desorption ionization time-of-flight mass spectrometry) of these endohedral fullerenes provided detailed structural and reactivity information about these unusual species. The fragmentation of the obtained ions is shown to be by a multiple C-2 loss (shrink-wrap mechanism). According to the fact that more atoms in the fullerene make the produced endohedral less stable, Li-3"C-70 shows a big degree of instability. The presence of Li-3"C-70 was observed on MALDI TOF MS.
PB  - Natl Inst Optoelectronics, Bucharest-Magurele
T2  - Journal of Optoelectronics and Advanced Materials
T1  - TIMS and MALDI TOF of endohedral Li-n"C-70 (n=1-3) metallofullerenes
EP  - 1507
IS  - 6
SP  - 1505
VL  - 10
UR  - https://hdl.handle.net/21.15107/rcub_vinar_3472
ER  - 

@article{
author = "Cvetićanin, Jelena M. and Veličković, Suzana and Đorđević, Vesna R. and Đustebek, Jasmina B. and Veljković, Miomir V. and Perić-Grujić, Aleksandra and Nešković, Olivera M.",
year = "2008",
abstract = "Using the ion implantation technique (introducing negatively charged fullerene into a low temperature lithium plasma column by a strong axial magnetic field) endohedral fullerenes Li"C-70, Li-2"C-70 and Li-3"C-70 were produced. Mass spectral studies (both TIMS-thermal ionization mass spectrometry and MALDI TOF MS - matrix assisted laser desorption ionization time-of-flight mass spectrometry) of these endohedral fullerenes provided detailed structural and reactivity information about these unusual species. The fragmentation of the obtained ions is shown to be by a multiple C-2 loss (shrink-wrap mechanism). According to the fact that more atoms in the fullerene make the produced endohedral less stable, Li-3"C-70 shows a big degree of instability. The presence of Li-3"C-70 was observed on MALDI TOF MS.",
publisher = "Natl Inst Optoelectronics, Bucharest-Magurele",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "TIMS and MALDI TOF of endohedral Li-n"C-70 (n=1-3) metallofullerenes",
pages = "1507-1505",
number = "6",
volume = "10",
url = "https://hdl.handle.net/21.15107/rcub_vinar_3472"
}

Cvetićanin, J. M., Veličković, S., Đorđević, V. R., Đustebek, J. B., Veljković, M. V., Perić-Grujić, A.,& Nešković, O. M.. (2008). TIMS and MALDI TOF of endohedral Li-n"C-70 (n=1-3) metallofullerenes. in Journal of Optoelectronics and Advanced Materials
Natl Inst Optoelectronics, Bucharest-Magurele., 10(6), 1505-1507.
https://hdl.handle.net/21.15107/rcub_vinar_3472

Cvetićanin JM, Veličković S, Đorđević VR, Đustebek JB, Veljković MV, Perić-Grujić A, Nešković OM. TIMS and MALDI TOF of endohedral Li-n"C-70 (n=1-3) metallofullerenes. in Journal of Optoelectronics and Advanced Materials. 2008;10(6):1505-1507.
https://hdl.handle.net/21.15107/rcub_vinar_3472 .

Cvetićanin, Jelena M., Veličković, Suzana, Đorđević, Vesna R., Đustebek, Jasmina B., Veljković, Miomir V., Perić-Grujić, Aleksandra, Nešković, Olivera M., "TIMS and MALDI TOF of endohedral Li-n"C-70 (n=1-3) metallofullerenes" in Journal of Optoelectronics and Advanced Materials, 10, no. 6 (2008):1505-1507,
https://hdl.handle.net/21.15107/rcub_vinar_3472 .

TY  - JOUR
AU  - Perić-Grujić, Aleksandra
AU  - Nešković, Olivera M.
AU  - Veljković, Miomir V.
AU  - Laušević, Zoran
AU  - Laušević, Mila
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1150
AB  - In this work, the influence of silver and palladium on the surface of undoped, boron doped and phosphorus doped glassy carbon has been studied. The silver and palladium concentrations in solution, after metal deposition, were measured by atomic absorption spectrophotometer. The morphology of metal coatings was characterized by scanning electron microscopy. In order to investigate the nature and thermal stability of surface oxygen groups, temperature-programmed desorption method combined with mass spectrometric analyses, was performed. The results obtained have shown that silver and palladium spontaneously deposit from their salt solutions at the surface of glassy carbon samples. Silver deposits have dendrite structure, whilst palladium forms separate clusters. The highest amount of both silver and palladium deposits at the surface of sample containing the highest quantity of surface oxide complexes. It has been concluded that carboxyl groups and structure defects are responsible for metal reduction. Calculated desorption energies have shown that the surface modification by metal deposition leads to the formation of more stable surface of undoped and doped glassy carbon samples.
PB  - Indian Acad Sciences, Bangalore
T2  - Bulletin of Materials Science
T1  - Surface characterization of silver and palladium modified glassy carbon
EP  - 593
IS  - 6
SP  - 587
VL  - 30
DO  - 10.1007/s12034-007-0093-7
ER  - 

@article{
author = "Perić-Grujić, Aleksandra and Nešković, Olivera M. and Veljković, Miomir V. and Laušević, Zoran and Laušević, Mila",
year = "2007",
abstract = "In this work, the influence of silver and palladium on the surface of undoped, boron doped and phosphorus doped glassy carbon has been studied. The silver and palladium concentrations in solution, after metal deposition, were measured by atomic absorption spectrophotometer. The morphology of metal coatings was characterized by scanning electron microscopy. In order to investigate the nature and thermal stability of surface oxygen groups, temperature-programmed desorption method combined with mass spectrometric analyses, was performed. The results obtained have shown that silver and palladium spontaneously deposit from their salt solutions at the surface of glassy carbon samples. Silver deposits have dendrite structure, whilst palladium forms separate clusters. The highest amount of both silver and palladium deposits at the surface of sample containing the highest quantity of surface oxide complexes. It has been concluded that carboxyl groups and structure defects are responsible for metal reduction. Calculated desorption energies have shown that the surface modification by metal deposition leads to the formation of more stable surface of undoped and doped glassy carbon samples.",
publisher = "Indian Acad Sciences, Bangalore",
journal = "Bulletin of Materials Science",
title = "Surface characterization of silver and palladium modified glassy carbon",
pages = "593-587",
number = "6",
volume = "30",
doi = "10.1007/s12034-007-0093-7"
}

Perić-Grujić, A., Nešković, O. M., Veljković, M. V., Laušević, Z.,& Laušević, M.. (2007). Surface characterization of silver and palladium modified glassy carbon. in Bulletin of Materials Science
Indian Acad Sciences, Bangalore., 30(6), 587-593.
https://doi.org/10.1007/s12034-007-0093-7

Perić-Grujić A, Nešković OM, Veljković MV, Laušević Z, Laušević M. Surface characterization of silver and palladium modified glassy carbon. in Bulletin of Materials Science. 2007;30(6):587-593.
doi:10.1007/s12034-007-0093-7 .

Perić-Grujić, Aleksandra, Nešković, Olivera M., Veljković, Miomir V., Laušević, Zoran, Laušević, Mila, "Surface characterization of silver and palladium modified glassy carbon" in Bulletin of Materials Science, 30, no. 6 (2007):587-593,
https://doi.org/10.1007/s12034-007-0093-7 . .

TY  - JOUR
AU  - Perić-Grujić, Aleksandra
AU  - Vasiljević, Tatjana
AU  - Nešković, Olivera M.
AU  - Veljković, Miomir V.
AU  - Laušević, Zoran
AU  - Laušević, Mila
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/958
AB  - The effects of boron and phosphorus incorporation in phenolic resin precursor to the oxidation resistance of glassy carbon have been studied. In order to reveal the nature and composition of the oxygen complexes formed at the surface of doped glassy carbon, under controlled atmosphere, the surface of the samples was cleaned under vacuum up to 1273 K. Specific functional groups, subsequently formed under dry CO2 or O-2 atmosphere on the surface of boron-doped and phosphorus-doped glassy carbon samples, were examined using the temperature-programmed desorption method combined with mass spectrometric analysis. Characterization of surface properties of undoped and doped samples has shown that in the presence of either boron or phosphorus heteroatoms, a lower amount of oxygen complexes formed after CO2 exposure, while, typically, higher amount of oxygen complexes formed after O-2 exposure. It has been concluded that the surface of undoped glassy carbon has a greater affinity towards CO2, while in the presence of either boron or phosphorus heteroatoms, the glassy carbon surface affinity becomes greater towards O-2, under experimental conditions.
PB  - Indian Acad Sciences, Bangalore
T2  - Bulletin of Materials Science
T1  - Formation of oxygen complexes in controlled atmosphere at surface of doped glassy carbon
EP  - 473
IS  - 5
SP  - 467
VL  - 29
DO  - 10.1007/BF02914077
ER  - 

@article{
author = "Perić-Grujić, Aleksandra and Vasiljević, Tatjana and Nešković, Olivera M. and Veljković, Miomir V. and Laušević, Zoran and Laušević, Mila",
year = "2006",
abstract = "The effects of boron and phosphorus incorporation in phenolic resin precursor to the oxidation resistance of glassy carbon have been studied. In order to reveal the nature and composition of the oxygen complexes formed at the surface of doped glassy carbon, under controlled atmosphere, the surface of the samples was cleaned under vacuum up to 1273 K. Specific functional groups, subsequently formed under dry CO2 or O-2 atmosphere on the surface of boron-doped and phosphorus-doped glassy carbon samples, were examined using the temperature-programmed desorption method combined with mass spectrometric analysis. Characterization of surface properties of undoped and doped samples has shown that in the presence of either boron or phosphorus heteroatoms, a lower amount of oxygen complexes formed after CO2 exposure, while, typically, higher amount of oxygen complexes formed after O-2 exposure. It has been concluded that the surface of undoped glassy carbon has a greater affinity towards CO2, while in the presence of either boron or phosphorus heteroatoms, the glassy carbon surface affinity becomes greater towards O-2, under experimental conditions.",
publisher = "Indian Acad Sciences, Bangalore",
journal = "Bulletin of Materials Science",
title = "Formation of oxygen complexes in controlled atmosphere at surface of doped glassy carbon",
pages = "473-467",
number = "5",
volume = "29",
doi = "10.1007/BF02914077"
}

Perić-Grujić, A., Vasiljević, T., Nešković, O. M., Veljković, M. V., Laušević, Z.,& Laušević, M.. (2006). Formation of oxygen complexes in controlled atmosphere at surface of doped glassy carbon. in Bulletin of Materials Science
Indian Acad Sciences, Bangalore., 29(5), 467-473.
https://doi.org/10.1007/BF02914077

Perić-Grujić A, Vasiljević T, Nešković OM, Veljković MV, Laušević Z, Laušević M. Formation of oxygen complexes in controlled atmosphere at surface of doped glassy carbon. in Bulletin of Materials Science. 2006;29(5):467-473.
doi:10.1007/BF02914077 .

Perić-Grujić, Aleksandra, Vasiljević, Tatjana, Nešković, Olivera M., Veljković, Miomir V., Laušević, Zoran, Laušević, Mila, "Formation of oxygen complexes in controlled atmosphere at surface of doped glassy carbon" in Bulletin of Materials Science, 29, no. 5 (2006):467-473,
https://doi.org/10.1007/BF02914077 . .

TY  - JOUR
AU  - Nešković, Olivera M.
AU  - Veljković, Miomir V.
AU  - Veličković, Suzana
AU  - Petkovska, LT
AU  - Perić-Grujić, Aleksandra
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/559
AB  - Ionization energies of hypervalent Li2F, Li2Cl and Na2Cl molecules detected by surface ionization electron impact neutralization mass spectrometry are reported. The ionization energies were 3.78 +/- 0.2 eV for Li2F, 4.93 +/- 0.2 eV for Li2Cl, and 4.21 +/- 0.2 eV for Na2Cl. The ionization energies (IE) agree with theoretical ionization energies calculated by ab initio methods,(1) supporting the theoretical prediction that Li2F has a hyperlithiated configuration in which the odd electron delocalizes over the two lithiums and with photoionization measurement.(2) The first ionization energy of Na2Cl was experimentally confirmed earlier(3-7) and for Li2Cl as well.(8) We have developed and used this new approach for the problem-in the present work ions were first formed by surface ionization, followed by electron attachment (neutralization).
PB  - John Wiley & Sons Ltd, W Sussex
T2  - Rapid Communications in Mass Spectrometry
T1  - Ionization energies of hypervalent Li2F, Li2Cl and Na2Cl molecules obtained by surface ionization electron impact neutralization mass spectrometry
EP  - 214
IS  - 3
SP  - 212
VL  - 17
DO  - 10.1002/rcm.896
ER  - 

@article{
author = "Nešković, Olivera M. and Veljković, Miomir V. and Veličković, Suzana and Petkovska, LT and Perić-Grujić, Aleksandra",
year = "2003",
abstract = "Ionization energies of hypervalent Li2F, Li2Cl and Na2Cl molecules detected by surface ionization electron impact neutralization mass spectrometry are reported. The ionization energies were 3.78 +/- 0.2 eV for Li2F, 4.93 +/- 0.2 eV for Li2Cl, and 4.21 +/- 0.2 eV for Na2Cl. The ionization energies (IE) agree with theoretical ionization energies calculated by ab initio methods,(1) supporting the theoretical prediction that Li2F has a hyperlithiated configuration in which the odd electron delocalizes over the two lithiums and with photoionization measurement.(2) The first ionization energy of Na2Cl was experimentally confirmed earlier(3-7) and for Li2Cl as well.(8) We have developed and used this new approach for the problem-in the present work ions were first formed by surface ionization, followed by electron attachment (neutralization).",
publisher = "John Wiley & Sons Ltd, W Sussex",
journal = "Rapid Communications in Mass Spectrometry",
title = "Ionization energies of hypervalent Li2F, Li2Cl and Na2Cl molecules obtained by surface ionization electron impact neutralization mass spectrometry",
pages = "214-212",
number = "3",
volume = "17",
doi = "10.1002/rcm.896"
}

Nešković, O. M., Veljković, M. V., Veličković, S., Petkovska, L.,& Perić-Grujić, A.. (2003). Ionization energies of hypervalent Li2F, Li2Cl and Na2Cl molecules obtained by surface ionization electron impact neutralization mass spectrometry. in Rapid Communications in Mass Spectrometry
John Wiley & Sons Ltd, W Sussex., 17(3), 212-214.
https://doi.org/10.1002/rcm.896

Nešković OM, Veljković MV, Veličković S, Petkovska L, Perić-Grujić A. Ionization energies of hypervalent Li2F, Li2Cl and Na2Cl molecules obtained by surface ionization electron impact neutralization mass spectrometry. in Rapid Communications in Mass Spectrometry. 2003;17(3):212-214.
doi:10.1002/rcm.896 .

Nešković, Olivera M., Veljković, Miomir V., Veličković, Suzana, Petkovska, LT, Perić-Grujić, Aleksandra, "Ionization energies of hypervalent Li2F, Li2Cl and Na2Cl molecules obtained by surface ionization electron impact neutralization mass spectrometry" in Rapid Communications in Mass Spectrometry, 17, no. 3 (2003):212-214,
https://doi.org/10.1002/rcm.896 . .

TY  - JOUR
AU  - Perić-Grujić, Aleksandra
AU  - Nešković, Olivera M.
AU  - Veljković, Miomir V.
AU  - Laušević, Mila
AU  - Laušević, Zoran
PY  - 2002
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/428
AB  - The temperature-programmed desorption (TPD) method combined with mass spectrometric (MS) analysis has been applied to investigate the surface properties of carbon materials. The apparatus consisting of a temperature-programmed furnace and a quadrupole mass spectrometer was constructed in order to characterize the surface of differently treated glassy carbon samples. In this work, samples of glassy carbon exposed to air, CO2 and O2 were examined. The desorption of H2O,CO and CO2, as major products, indicated the presence of different oxide groups. The amount of these groups for all samples was calculated. It is concluded that oxidation affects the nature and the amount of the surface oxide groups and contributes to their increased stability.
AB  - Za ispitivanja površinskih karakteristika ugljeničnih materijala, konstruisan je uređaj za temperaturski programiranu desorpciju sa masenospektrometrijskim detektorom pomoću koga se prate desorpcioni produkti razlaganja površinskih oksidnih kompleksa. Pri tome je moguće vršiti njihovu kvalitativnu i kvantitativnu analizu. U okviru ovog rada ispitan je uticaj oksidacije ugljen-dioksidom, odnosno kiseonikom, na površinske osobine staklastog karbona, jer je on sintetički ugljenični materijal čija primena u velikoj meri zavisi od njegovih površinskih osobina. Desorpcija vode ugljen-monoksida i ugljen-dioksida, kao glavnih desorpcionih produkata ukazala je na prisustvo različitih količina, različitih oksidnih grupa na površini ispitanih uzoraka. Rezultati su pokazali da oksidacija ugljen-dioksidom, odnosno kiseonikom dovodi do smanjenja broja oksidnih grupa koje se razlažu na temperaturama ispod 1000 K, kao i do formiranja stabilnijih grupa koje se razlažu na višim temperaturama.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - TPD-MS study of glassy carbon surfaces oxidized by CO2 and O2
T1  - Maseno spektrometrijsko ispitivanje stabilnosti površine staklastog karbona oksidovanog ugljen-dioksidom ili kiseonikom
EP  - 768
IS  - 11
SP  - 761
VL  - 67
UR  - https://hdl.handle.net/21.15107/rcub_technorep_428
ER  - 

@article{
author = "Perić-Grujić, Aleksandra and Nešković, Olivera M. and Veljković, Miomir V. and Laušević, Mila and Laušević, Zoran",
year = "2002",
abstract = "The temperature-programmed desorption (TPD) method combined with mass spectrometric (MS) analysis has been applied to investigate the surface properties of carbon materials. The apparatus consisting of a temperature-programmed furnace and a quadrupole mass spectrometer was constructed in order to characterize the surface of differently treated glassy carbon samples. In this work, samples of glassy carbon exposed to air, CO2 and O2 were examined. The desorption of H2O,CO and CO2, as major products, indicated the presence of different oxide groups. The amount of these groups for all samples was calculated. It is concluded that oxidation affects the nature and the amount of the surface oxide groups and contributes to their increased stability., Za ispitivanja površinskih karakteristika ugljeničnih materijala, konstruisan je uređaj za temperaturski programiranu desorpciju sa masenospektrometrijskim detektorom pomoću koga se prate desorpcioni produkti razlaganja površinskih oksidnih kompleksa. Pri tome je moguće vršiti njihovu kvalitativnu i kvantitativnu analizu. U okviru ovog rada ispitan je uticaj oksidacije ugljen-dioksidom, odnosno kiseonikom, na površinske osobine staklastog karbona, jer je on sintetički ugljenični materijal čija primena u velikoj meri zavisi od njegovih površinskih osobina. Desorpcija vode ugljen-monoksida i ugljen-dioksida, kao glavnih desorpcionih produkata ukazala je na prisustvo različitih količina, različitih oksidnih grupa na površini ispitanih uzoraka. Rezultati su pokazali da oksidacija ugljen-dioksidom, odnosno kiseonikom dovodi do smanjenja broja oksidnih grupa koje se razlažu na temperaturama ispod 1000 K, kao i do formiranja stabilnijih grupa koje se razlažu na višim temperaturama.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "TPD-MS study of glassy carbon surfaces oxidized by CO2 and O2, Maseno spektrometrijsko ispitivanje stabilnosti površine staklastog karbona oksidovanog ugljen-dioksidom ili kiseonikom",
pages = "768-761",
number = "11",
volume = "67",
url = "https://hdl.handle.net/21.15107/rcub_technorep_428"
}

Perić-Grujić, A., Nešković, O. M., Veljković, M. V., Laušević, M.,& Laušević, Z.. (2002). TPD-MS study of glassy carbon surfaces oxidized by CO2 and O2. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 67(11), 761-768.
https://hdl.handle.net/21.15107/rcub_technorep_428

Perić-Grujić A, Nešković OM, Veljković MV, Laušević M, Laušević Z. TPD-MS study of glassy carbon surfaces oxidized by CO2 and O2. in Journal of the Serbian Chemical Society. 2002;67(11):761-768.
https://hdl.handle.net/21.15107/rcub_technorep_428 .

Perić-Grujić, Aleksandra, Nešković, Olivera M., Veljković, Miomir V., Laušević, Mila, Laušević, Zoran, "TPD-MS study of glassy carbon surfaces oxidized by CO2 and O2" in Journal of the Serbian Chemical Society, 67, no. 11 (2002):761-768,
https://hdl.handle.net/21.15107/rcub_technorep_428 .

TY  - JOUR
AU  - Đurkić, Tatjana
AU  - Perić, Aleksandra
AU  - Laušević, Mila
AU  - Dekanski, Aleksandar
AU  - Nešković, Olivera M.
AU  - Veljković, Miomir V.
AU  - Laušević, Zoran
PY  - 1997
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/153
AB  - The effects of boron and phosphorus incorporation in phenolic resin precursor on the surface properties of glassy carbon (GC) have been studied. Characterization of the surface properties using X-ray photoelectron spectroscopy and mass spectrometry analysis of desorption products showed that boron and phosphorus doped GC contained more carbon-oxygen complexes on the surface than undoped GC. The thermal decomposition of the surface oxide species, resulting in desorption of CO and CO2 as major gas products, showed that the presence of heteroatoms affects the nature of the surface oxide species and contributes to their increased stability. The presence of stable surface oxide species promotes the increased oxidation resistance of doped GC samples.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Carbon
T1  - Boron and phosphorus doped glassy carbon: I. Surface properties
EP  - 1572
IS  - 10-11
SP  - 1567
VL  - 35
DO  - 10.1016/S0008-6223(97)00113-9
ER  - 

@article{
author = "Đurkić, Tatjana and Perić, Aleksandra and Laušević, Mila and Dekanski, Aleksandar and Nešković, Olivera M. and Veljković, Miomir V. and Laušević, Zoran",
year = "1997",
abstract = "The effects of boron and phosphorus incorporation in phenolic resin precursor on the surface properties of glassy carbon (GC) have been studied. Characterization of the surface properties using X-ray photoelectron spectroscopy and mass spectrometry analysis of desorption products showed that boron and phosphorus doped GC contained more carbon-oxygen complexes on the surface than undoped GC. The thermal decomposition of the surface oxide species, resulting in desorption of CO and CO2 as major gas products, showed that the presence of heteroatoms affects the nature of the surface oxide species and contributes to their increased stability. The presence of stable surface oxide species promotes the increased oxidation resistance of doped GC samples.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Carbon",
title = "Boron and phosphorus doped glassy carbon: I. Surface properties",
pages = "1572-1567",
number = "10-11",
volume = "35",
doi = "10.1016/S0008-6223(97)00113-9"
}

Đurkić, T., Perić, A., Laušević, M., Dekanski, A., Nešković, O. M., Veljković, M. V.,& Laušević, Z.. (1997). Boron and phosphorus doped glassy carbon: I. Surface properties. in Carbon
Pergamon-Elsevier Science Ltd, Oxford., 35(10-11), 1567-1572.
https://doi.org/10.1016/S0008-6223(97)00113-9

Đurkić T, Perić A, Laušević M, Dekanski A, Nešković OM, Veljković MV, Laušević Z. Boron and phosphorus doped glassy carbon: I. Surface properties. in Carbon. 1997;35(10-11):1567-1572.
doi:10.1016/S0008-6223(97)00113-9 .

Đurkić, Tatjana, Perić, Aleksandra, Laušević, Mila, Dekanski, Aleksandar, Nešković, Olivera M., Veljković, Miomir V., Laušević, Zoran, "Boron and phosphorus doped glassy carbon: I. Surface properties" in Carbon, 35, no. 10-11 (1997):1567-1572,
https://doi.org/10.1016/S0008-6223(97)00113-9 . .

TY  - JOUR
AU  - Perić, Aleksandra
AU  - Nešković, Olivera M.
AU  - Veljković, Miomir V.
AU  - Miletić, Marjan
AU  - Zmbov, K
AU  - Petrović, S.
AU  - Laušević, Mila
AU  - Laušević, Zoran
PY  - 1996
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/91
AB  - The temperature-programmed desorption (TPD) method combined with mass spectrometric analysis has been applied to the characterization of glassy carbon (GC) and modified glassy carbon surfaces. Five different samples of GC were obtained from a commercial resol type of phenol formaldehyde resin that bad undergone several treatments: the samples were either pure GC, GC treated with boron and phosphorus, or GC modified by metal (silver and palladium). Mass spectrometric analysis has shown that the thermal decomposition of surface oxide species results in desorption of H2O, CO and CO2, these being the major gas products. On the basis of the TPD spectra obtained, desorption energies have been calculated using a peak position method. The influence of CO2 oxidation on the surface properties of the samples was also investigated. It was concluded that metal deposition on a glassy carbon surface contributes to increased stability of surface oxide species, the most stable surface being one that has been modified by palladium deposition.
PB  - Wiley, Hoboken
T2  - Rapid Communications in Mass Spectrometry
T1  - Temperature-programmed desorption mass spectrometric study of the surface properties of glassy carbon
EP  - 1236
IS  - 10
SP  - 1233
VL  - 10
UR  - https://hdl.handle.net/21.15107/rcub_vinar_2004
ER  - 

@article{
author = "Perić, Aleksandra and Nešković, Olivera M. and Veljković, Miomir V. and Miletić, Marjan and Zmbov, K and Petrović, S. and Laušević, Mila and Laušević, Zoran",
year = "1996",
abstract = "The temperature-programmed desorption (TPD) method combined with mass spectrometric analysis has been applied to the characterization of glassy carbon (GC) and modified glassy carbon surfaces. Five different samples of GC were obtained from a commercial resol type of phenol formaldehyde resin that bad undergone several treatments: the samples were either pure GC, GC treated with boron and phosphorus, or GC modified by metal (silver and palladium). Mass spectrometric analysis has shown that the thermal decomposition of surface oxide species results in desorption of H2O, CO and CO2, these being the major gas products. On the basis of the TPD spectra obtained, desorption energies have been calculated using a peak position method. The influence of CO2 oxidation on the surface properties of the samples was also investigated. It was concluded that metal deposition on a glassy carbon surface contributes to increased stability of surface oxide species, the most stable surface being one that has been modified by palladium deposition.",
publisher = "Wiley, Hoboken",
journal = "Rapid Communications in Mass Spectrometry",
title = "Temperature-programmed desorption mass spectrometric study of the surface properties of glassy carbon",
pages = "1236-1233",
number = "10",
volume = "10",
url = "https://hdl.handle.net/21.15107/rcub_vinar_2004"
}

Perić, A., Nešković, O. M., Veljković, M. V., Miletić, M., Zmbov, K., Petrović, S., Laušević, M.,& Laušević, Z.. (1996). Temperature-programmed desorption mass spectrometric study of the surface properties of glassy carbon. in Rapid Communications in Mass Spectrometry
Wiley, Hoboken., 10(10), 1233-1236.
https://hdl.handle.net/21.15107/rcub_vinar_2004

Perić A, Nešković OM, Veljković MV, Miletić M, Zmbov K, Petrović S, Laušević M, Laušević Z. Temperature-programmed desorption mass spectrometric study of the surface properties of glassy carbon. in Rapid Communications in Mass Spectrometry. 1996;10(10):1233-1236.
https://hdl.handle.net/21.15107/rcub_vinar_2004 .

Perić, Aleksandra, Nešković, Olivera M., Veljković, Miomir V., Miletić, Marjan, Zmbov, K, Petrović, S., Laušević, Mila, Laušević, Zoran, "Temperature-programmed desorption mass spectrometric study of the surface properties of glassy carbon" in Rapid Communications in Mass Spectrometry, 10, no. 10 (1996):1233-1236,
https://hdl.handle.net/21.15107/rcub_vinar_2004 .

TY  - JOUR
AU  - Perić, Aleksandra
AU  - Nešković, Olivera M.
AU  - Veljković, M.
AU  - Zmbov, K.
AU  - Miletić, M.
AU  - Laušević, Mila
AU  - Laušević, Zoran
PY  - 1996
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/82
AB  - The combinaton of temperature-programmed desorption (TPD) and quadrupole mass spectrometry was used to investigate glassy carbon surface stability. TPD experiments provide valuable information about the nature and the stability of the surface oxide groups. Samples of pure glassy carbon, and glassy carbon modified by metal (silver, palladium) deposition were analysed. Mass spectrometric analysis showed that the thermal decomposition of surface oxide species results in desorption of H 2 O, CO and CO 2 , these being the major gas products. Desorption energies were calculated using the peak-position method. On the basis of the TPD spectra obtained and the desorption energies, it was concluded that the metal deposition stabilizes the glassy carbon surface.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Mass spectrometric study of glassy carbon surface stability
EP  - 808
IS  - 9
SP  - 803
VL  - 61
UR  - https://hdl.handle.net/21.15107/rcub_technorep_82
ER  - 

@article{
author = "Perić, Aleksandra and Nešković, Olivera M. and Veljković, M. and Zmbov, K. and Miletić, M. and Laušević, Mila and Laušević, Zoran",
year = "1996",
abstract = "The combinaton of temperature-programmed desorption (TPD) and quadrupole mass spectrometry was used to investigate glassy carbon surface stability. TPD experiments provide valuable information about the nature and the stability of the surface oxide groups. Samples of pure glassy carbon, and glassy carbon modified by metal (silver, palladium) deposition were analysed. Mass spectrometric analysis showed that the thermal decomposition of surface oxide species results in desorption of H 2 O, CO and CO 2 , these being the major gas products. Desorption energies were calculated using the peak-position method. On the basis of the TPD spectra obtained and the desorption energies, it was concluded that the metal deposition stabilizes the glassy carbon surface.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Mass spectrometric study of glassy carbon surface stability",
pages = "808-803",
number = "9",
volume = "61",
url = "https://hdl.handle.net/21.15107/rcub_technorep_82"
}

Perić, A., Nešković, O. M., Veljković, M., Zmbov, K., Miletić, M., Laušević, M.,& Laušević, Z.. (1996). Mass spectrometric study of glassy carbon surface stability. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 61(9), 803-808.
https://hdl.handle.net/21.15107/rcub_technorep_82

Perić A, Nešković OM, Veljković M, Zmbov K, Miletić M, Laušević M, Laušević Z. Mass spectrometric study of glassy carbon surface stability. in Journal of the Serbian Chemical Society. 1996;61(9):803-808.
https://hdl.handle.net/21.15107/rcub_technorep_82 .

Perić, Aleksandra, Nešković, Olivera M., Veljković, M., Zmbov, K., Miletić, M., Laušević, Mila, Laušević, Zoran, "Mass spectrometric study of glassy carbon surface stability" in Journal of the Serbian Chemical Society, 61, no. 9 (1996):803-808,
https://hdl.handle.net/21.15107/rcub_technorep_82 .