TY  - JOUR
AU  - Dakovic, A
AU  - Tomasevic-Canovic, M
AU  - Dondur, V
AU  - Rottinghaus, GE
AU  - Medaković, Vesna
AU  - Zarić, Snežana D.
PY  - 2005
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/741
AB  - Adsorption of zearalenone (ZEN), ochratoxin A (OCHRA) and aflatoxin B1 (AFB1) on natural zeolite, clinoptilolite, modified with different amounts of octadecyldimethylbenzyl ammonium (ODMBA) ions was investigated. Results showed that adsorption of hydrophobic ionizable ZEN on unmodified zeolite tuff was very low and that adsorption on organozeolites increased with increasing hydrophobicity of the zeolitic surface. The adsorption was independent of the form of ZEN in solution and the solution pH, indicating that hydrophobic interactions with ODMBA are responsible for ZEN adsorption. Adsorption of low polar ionizable OCHRA on organozeolites also increased with increasing hydrophobicity of the zeolitic surface, however, OCHRA showed moderate adsorption on unmodified zeolitic tuff at pH 3. OCHRA adsorption on unmodified zeolite as well as on lower surface coverage of organozeolite was dependent on the form of OCHRA in solution; there was a decrease of adsorption at high pH, where OCHRA is in the anionic form. It indicated that at acidic pH, low surface coverage allows some combination of hydrophobic interaction with ODMBA and interactions with the surface of the zeolite. At higher surface coverage, the OCHRA adsorption was higher and practically independent of pH, indicating that the hydrophobic interactions of OCHRA with ODMBA are responsible for its adsorption. Nonionizable low polar AFB1 had a high affinity for the unmodified zeolitic tuff and the adsorption of AFB1 was greatly reduced for organozeolites, indicating that AFB1 does not have high tendency for hydrophobic interactions with ODMBA. pH dependence of AFB1 adsorption, while AFB1 has the same form at all pHs, demonstrated that the surface modification of the zeolite depends on pH and that these modifications have influence on its adsorption. The calculated dipole moments of neutral mycotoxin molecules: AFB1-9.5D, OCHRA-6.9D and ZEN-2.2D are in qualitative agreement with adsorption experimental data. (c) 2005 Elsevier B.V All rights reserved.
PB  - Elsevier Science Bv, Amsterdam
T2  - Colloids and Surfaces. B: Biointerfaces
T1  - Adsorption of mycotoxins by organozeolites
VL  - 46
IS  - 1
SP  - 20
EP  - 25
DO  - 10.1016/j.colsurfb.2005.08.013
ER  - 

@article{
author = "Dakovic, A and Tomasevic-Canovic, M and Dondur, V and Rottinghaus, GE and Medaković, Vesna and Zarić, Snežana D.",
year = "2005",
abstract = "Adsorption of zearalenone (ZEN), ochratoxin A (OCHRA) and aflatoxin B1 (AFB1) on natural zeolite, clinoptilolite, modified with different amounts of octadecyldimethylbenzyl ammonium (ODMBA) ions was investigated. Results showed that adsorption of hydrophobic ionizable ZEN on unmodified zeolite tuff was very low and that adsorption on organozeolites increased with increasing hydrophobicity of the zeolitic surface. The adsorption was independent of the form of ZEN in solution and the solution pH, indicating that hydrophobic interactions with ODMBA are responsible for ZEN adsorption. Adsorption of low polar ionizable OCHRA on organozeolites also increased with increasing hydrophobicity of the zeolitic surface, however, OCHRA showed moderate adsorption on unmodified zeolitic tuff at pH 3. OCHRA adsorption on unmodified zeolite as well as on lower surface coverage of organozeolite was dependent on the form of OCHRA in solution; there was a decrease of adsorption at high pH, where OCHRA is in the anionic form. It indicated that at acidic pH, low surface coverage allows some combination of hydrophobic interaction with ODMBA and interactions with the surface of the zeolite. At higher surface coverage, the OCHRA adsorption was higher and practically independent of pH, indicating that the hydrophobic interactions of OCHRA with ODMBA are responsible for its adsorption. Nonionizable low polar AFB1 had a high affinity for the unmodified zeolitic tuff and the adsorption of AFB1 was greatly reduced for organozeolites, indicating that AFB1 does not have high tendency for hydrophobic interactions with ODMBA. pH dependence of AFB1 adsorption, while AFB1 has the same form at all pHs, demonstrated that the surface modification of the zeolite depends on pH and that these modifications have influence on its adsorption. The calculated dipole moments of neutral mycotoxin molecules: AFB1-9.5D, OCHRA-6.9D and ZEN-2.2D are in qualitative agreement with adsorption experimental data. (c) 2005 Elsevier B.V All rights reserved.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Colloids and Surfaces. B: Biointerfaces",
title = "Adsorption of mycotoxins by organozeolites",
volume = "46",
number = "1",
pages = "20-25",
doi = "10.1016/j.colsurfb.2005.08.013"
}

Dakovic, A., Tomasevic-Canovic, M., Dondur, V., Rottinghaus, G., Medaković, V.,& Zarić, S. D.. (2005). Adsorption of mycotoxins by organozeolites. in Colloids and Surfaces. B: Biointerfaces
Elsevier Science Bv, Amsterdam., 46(1), 20-25.
https://doi.org/10.1016/j.colsurfb.2005.08.013

Dakovic A, Tomasevic-Canovic M, Dondur V, Rottinghaus G, Medaković V, Zarić SD. Adsorption of mycotoxins by organozeolites. in Colloids and Surfaces. B: Biointerfaces. 2005;46(1):20-25.
doi:10.1016/j.colsurfb.2005.08.013 .

Dakovic, A, Tomasevic-Canovic, M, Dondur, V, Rottinghaus, GE, Medaković, Vesna, Zarić, Snežana D., "Adsorption of mycotoxins by organozeolites" in Colloids and Surfaces. B: Biointerfaces, 46, no. 1 (2005):20-25,
https://doi.org/10.1016/j.colsurfb.2005.08.013 . .

TY  - JOUR
AU  - Sabo, Tibor
AU  - Vlajković, J.
AU  - Dondur, V.
PY  - 1997
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/46
AB  - In this paper, the solid state reaction, conducted with a mixture of pentaamminechlorocobalt(III) chloride and potassium 4-morpholinecarbodithioate was investigated under isothermal conditions. The reaction proceeds at relatively low temperatures (154-192 °C). The yield of product solid-solid reaction, tris(4-morpholinecarbodithioato-S,S')cobalt(III) complex, does not exceed 65%. The kinetic of the reaction of powdered and pressed samples were investigated. The reaction proceeded according to the diffusional mechanism. Activation energies of 200 kJ/mol and 100 kJ/mol for the powdered and pressed form, respectively, were obtained.
T2  - Journal of the Serbian Chemical Society
T1  - The mechanisms of tris(4-morpholinecarbodithioato-S,S′)cobalt(III) complex formation by solid state reaction from ammine cobalt(III) complexes
VL  - 62
IS  - 11
SP  - 1037
EP  - 1044
UR  - https://hdl.handle.net/21.15107/rcub_cherry_46
ER  - 

@article{
author = "Sabo, Tibor and Vlajković, J. and Dondur, V.",
year = "1997",
abstract = "In this paper, the solid state reaction, conducted with a mixture of pentaamminechlorocobalt(III) chloride and potassium 4-morpholinecarbodithioate was investigated under isothermal conditions. The reaction proceeds at relatively low temperatures (154-192 °C). The yield of product solid-solid reaction, tris(4-morpholinecarbodithioato-S,S')cobalt(III) complex, does not exceed 65%. The kinetic of the reaction of powdered and pressed samples were investigated. The reaction proceeded according to the diffusional mechanism. Activation energies of 200 kJ/mol and 100 kJ/mol for the powdered and pressed form, respectively, were obtained.",
journal = "Journal of the Serbian Chemical Society",
title = "The mechanisms of tris(4-morpholinecarbodithioato-S,S′)cobalt(III) complex formation by solid state reaction from ammine cobalt(III) complexes",
volume = "62",
number = "11",
pages = "1037-1044",
url = "https://hdl.handle.net/21.15107/rcub_cherry_46"
}

Sabo, T., Vlajković, J.,& Dondur, V.. (1997). The mechanisms of tris(4-morpholinecarbodithioato-S,S′)cobalt(III) complex formation by solid state reaction from ammine cobalt(III) complexes. in Journal of the Serbian Chemical Society, 62(11), 1037-1044.
https://hdl.handle.net/21.15107/rcub_cherry_46

Sabo T, Vlajković J, Dondur V. The mechanisms of tris(4-morpholinecarbodithioato-S,S′)cobalt(III) complex formation by solid state reaction from ammine cobalt(III) complexes. in Journal of the Serbian Chemical Society. 1997;62(11):1037-1044.
https://hdl.handle.net/21.15107/rcub_cherry_46 .

Sabo, Tibor, Vlajković, J., Dondur, V., "The mechanisms of tris(4-morpholinecarbodithioato-S,S′)cobalt(III) complex formation by solid state reaction from ammine cobalt(III) complexes" in Journal of the Serbian Chemical Society, 62, no. 11 (1997):1037-1044,
https://hdl.handle.net/21.15107/rcub_cherry_46 .

TY  - JOUR
AU  - Sabo, Tibor
AU  - Juranić, N.
AU  - Dondur, V.
AU  - Ćelap, M.B.
PY  - 1993
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/96
AB  - The kinetics of tris-(4-morpholinecarbodithionato-S,S) cobalt(III) formation by the intralattice and interlattice reactions of hexaaminecobalt(III) cation with dithiocarbamato anion was investigated under isothermal conditions. The intralattice reaction, conducted in the solid hexaaminecobalt(III) 4-morpholinecarbodithionate salt, proceeded well at temperatures of 50-80°C, conforming to the phase boundary Rn reaction mechanism (Ea = 92.6 kJ mol-1, A = 5.28 × 109 s-1). The interlattice reaction, conducted in the mixture of hexaaminecobalt(III) chloride and potassium 4-morpholinecarbodithionate powders, proceeded well at temperatures of 140-200° C. The effect of the particle size of the powders and of the powder packing pressure on the kinetic parameters were also investigated. In the first half of the reaction, the random nucleation F1 mechanism seems to operate (Ea = 200-265 kJ mol-1, A = 8.6 × 1018-3.6 × 1027s-1); later the diffusional mechanism prevails. In addition, a fast initial process in the interlattice reaction has been discovered and investigated at lower temperatures (80-115° C). It conforms to the random nucleation F1 reaction mechanism (Ea = 63 kJ mol-1, A = 1.6 × 105 s-1). © 1993.
T2  - Thermochimica Acta
T1  - A kinetic investigation of the tris(4-morpholinecarbodithionato-S,S') cobalt(III) complex formation by the intralattice and interlattice reactions
VL  - 213
IS  - C
SP  - 293
EP  - 304
DO  - 10.1016/0040-6031(93)80023-4
ER  - 

@article{
author = "Sabo, Tibor and Juranić, N. and Dondur, V. and Ćelap, M.B.",
year = "1993",
abstract = "The kinetics of tris-(4-morpholinecarbodithionato-S,S) cobalt(III) formation by the intralattice and interlattice reactions of hexaaminecobalt(III) cation with dithiocarbamato anion was investigated under isothermal conditions. The intralattice reaction, conducted in the solid hexaaminecobalt(III) 4-morpholinecarbodithionate salt, proceeded well at temperatures of 50-80°C, conforming to the phase boundary Rn reaction mechanism (Ea = 92.6 kJ mol-1, A = 5.28 × 109 s-1). The interlattice reaction, conducted in the mixture of hexaaminecobalt(III) chloride and potassium 4-morpholinecarbodithionate powders, proceeded well at temperatures of 140-200° C. The effect of the particle size of the powders and of the powder packing pressure on the kinetic parameters were also investigated. In the first half of the reaction, the random nucleation F1 mechanism seems to operate (Ea = 200-265 kJ mol-1, A = 8.6 × 1018-3.6 × 1027s-1); later the diffusional mechanism prevails. In addition, a fast initial process in the interlattice reaction has been discovered and investigated at lower temperatures (80-115° C). It conforms to the random nucleation F1 reaction mechanism (Ea = 63 kJ mol-1, A = 1.6 × 105 s-1). © 1993.",
journal = "Thermochimica Acta",
title = "A kinetic investigation of the tris(4-morpholinecarbodithionato-S,S') cobalt(III) complex formation by the intralattice and interlattice reactions",
volume = "213",
number = "C",
pages = "293-304",
doi = "10.1016/0040-6031(93)80023-4"
}

Sabo, T., Juranić, N., Dondur, V.,& Ćelap, M.B.. (1993). A kinetic investigation of the tris(4-morpholinecarbodithionato-S,S') cobalt(III) complex formation by the intralattice and interlattice reactions. in Thermochimica Acta, 213(C), 293-304.
https://doi.org/10.1016/0040-6031(93)80023-4

Sabo T, Juranić N, Dondur V, Ćelap M. A kinetic investigation of the tris(4-morpholinecarbodithionato-S,S') cobalt(III) complex formation by the intralattice and interlattice reactions. in Thermochimica Acta. 1993;213(C):293-304.
doi:10.1016/0040-6031(93)80023-4 .

Sabo, Tibor, Juranić, N., Dondur, V., Ćelap, M.B., "A kinetic investigation of the tris(4-morpholinecarbodithionato-S,S') cobalt(III) complex formation by the intralattice and interlattice reactions" in Thermochimica Acta, 213, no. C (1993):293-304,
https://doi.org/10.1016/0040-6031(93)80023-4 . .