TY  - JOUR
AU  - Marinović, Vedrana
AU  - Marinović, Sanja
AU  - Jovanović, M.
AU  - Našić, G.
AU  - Stojanović, M.
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/364
AB  - The study of the electrochemical reduction on acetonitrile modified platinum electrode and determination of trinitrotoluene (TNT) in neutral solution by simple galvanostatic technique is presented here. The obtained potential-time responses on the applied constant cathodic current pulses showed two potential transitions before achieving the steady-states, referring to the multi-step reduction process of nitro groups in TNT molecule. The calibration curves of the dependence of the square root of the first transition time (τ 0.5) on the TNT concentration were linear in the ranges 4.4 – 303.8 μM and 0.09 – 4.40 μM for applied constant current of 0.1 mA. The detection limit was 0.09 μM. The method was tested in the river water. The results indicated the sensitivity of the galvanostatic method for TNT determination in the environmental samples. From the first transition on the E-t curves the characteristics important for the understanding the mechanism of the reduction process were obtained. It was found that four electrons are involved in the reduction process of the first nitro group, indicating that the reduction product in a neutral electrolyte is hydroxylamine.
Keywords:
PB  - ESG
T2  - International Journal of Electrochemical Science
T1  - The galvanostatic reduction on modified platinum electrode and determination of trinitrotoluene in neutral solution
SP  - 1986
EP  - 1998
VL  - 8
IS  - 2
UR  - https://hdl.handle.net/21.15107/rcub_dais_364
ER  - 

@article{
author = "Marinović, Vedrana and Marinović, Sanja and Jovanović, M. and Našić, G. and Stojanović, M.",
year = "2013",
abstract = "The study of the electrochemical reduction on acetonitrile modified platinum electrode and determination of trinitrotoluene (TNT) in neutral solution by simple galvanostatic technique is presented here. The obtained potential-time responses on the applied constant cathodic current pulses showed two potential transitions before achieving the steady-states, referring to the multi-step reduction process of nitro groups in TNT molecule. The calibration curves of the dependence of the square root of the first transition time (τ 0.5) on the TNT concentration were linear in the ranges 4.4 – 303.8 μM and 0.09 – 4.40 μM for applied constant current of 0.1 mA. The detection limit was 0.09 μM. The method was tested in the river water. The results indicated the sensitivity of the galvanostatic method for TNT determination in the environmental samples. From the first transition on the E-t curves the characteristics important for the understanding the mechanism of the reduction process were obtained. It was found that four electrons are involved in the reduction process of the first nitro group, indicating that the reduction product in a neutral electrolyte is hydroxylamine.
Keywords:",
publisher = "ESG",
journal = "International Journal of Electrochemical Science",
title = "The galvanostatic reduction on modified platinum electrode and determination of trinitrotoluene in neutral solution",
pages = "1986-1998",
volume = "8",
number = "2",
url = "https://hdl.handle.net/21.15107/rcub_dais_364"
}

Marinović, V., Marinović, S., Jovanović, M., Našić, G.,& Stojanović, M.. (2013). The galvanostatic reduction on modified platinum electrode and determination of trinitrotoluene in neutral solution. in International Journal of Electrochemical Science
ESG., 8(2), 1986-1998.
https://hdl.handle.net/21.15107/rcub_dais_364

Marinović V, Marinović S, Jovanović M, Našić G, Stojanović M. The galvanostatic reduction on modified platinum electrode and determination of trinitrotoluene in neutral solution. in International Journal of Electrochemical Science. 2013;8(2):1986-1998.
https://hdl.handle.net/21.15107/rcub_dais_364 .

Marinović, Vedrana, Marinović, Sanja, Jovanović, M., Našić, G., Stojanović, M., "The galvanostatic reduction on modified platinum electrode and determination of trinitrotoluene in neutral solution" in International Journal of Electrochemical Science, 8, no. 2 (2013):1986-1998,
https://hdl.handle.net/21.15107/rcub_dais_364 .

TY  - CONF
AU  - Marković, Smilja
AU  - Stanković, Ana
AU  - Lopičić, Zorica
AU  - Stojanović, M.
AU  - Uskoković, Dragan
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/398
AB  - Increased industrial, agricultural and domestic activities resulted in the production of large amount of wastewater containing a number of toxic materials which continuously polluting the available fresh water. Sorption is an effective method for water decontamination. Various types of pollutants such as metal ions, dyes, and a number of other organic and inorganic compounds and bio-organisms could be removed by different types of sorbents. Important properties of good sorbent material are high specific surface area and fast kinetics for the removal of pollutants. Natural materials such as oil palm fibers and shells, waste apricot and pitch, olive-seeds waste, peach stones, almond shells, walnut shells, hazelnut shells, kaolin, bentonite, zeolites, coal, etc., possess large capacities for removing of the water pollutants. The main advantages of these materials are wide availability, low cost and environmental safety. The peach shells (PS) were used as the raw material for removing of non-degradable toxic dyes from water solutions. Methylene blue (MB) and brilliant green (BG) were used as representatives of dyes which commonly are pollutant from the textile industry. The peach shells were milled in vibromill and sieved to desired sizes: (1) 100-500 μm, and (2) < 100 μm. The phase composition of the prepared particles fractions was identified by XRD. The BET specific surface area was determined from N2 adsorption/desorption experiments. The particles morphology was characterized by SEM, while the particle size distribution was measured by laser light-scattering particle size analyzer. In a typical experiment, 50 mg of PS particles as the sorbent was mixed on a magnetic stirrer with 50 ml of dye aqueous solution with the initial concentration of 5, 10 and 20 ppm, at room temperature. At time intervals of 5 to 120 minutes aliquots was withdrawn, centrifuged, and pollutant concentration was measured. The concentration of MB and BG in the solution before and after sorption by PS was calculated according to the absorbance value at 665 nm (for MB) and 624 nm (for BG) determined by UV measurements performed on a UV–Vis spectrophotometer in the wavelength range of 300–800 nm. Capacity of MB and BG sorption by prepared PS particles was found to be above 86 % after 120 minutes.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
T1  - Application of peach shells for the removal of methylene blue and brilliant green
SP  - 111
EP  - 111
UR  - https://hdl.handle.net/21.15107/rcub_dais_398
ER  - 

@conference{
author = "Marković, Smilja and Stanković, Ana and Lopičić, Zorica and Stojanović, M. and Uskoković, Dragan",
year = "2013",
abstract = "Increased industrial, agricultural and domestic activities resulted in the production of large amount of wastewater containing a number of toxic materials which continuously polluting the available fresh water. Sorption is an effective method for water decontamination. Various types of pollutants such as metal ions, dyes, and a number of other organic and inorganic compounds and bio-organisms could be removed by different types of sorbents. Important properties of good sorbent material are high specific surface area and fast kinetics for the removal of pollutants. Natural materials such as oil palm fibers and shells, waste apricot and pitch, olive-seeds waste, peach stones, almond shells, walnut shells, hazelnut shells, kaolin, bentonite, zeolites, coal, etc., possess large capacities for removing of the water pollutants. The main advantages of these materials are wide availability, low cost and environmental safety. The peach shells (PS) were used as the raw material for removing of non-degradable toxic dyes from water solutions. Methylene blue (MB) and brilliant green (BG) were used as representatives of dyes which commonly are pollutant from the textile industry. The peach shells were milled in vibromill and sieved to desired sizes: (1) 100-500 μm, and (2) < 100 μm. The phase composition of the prepared particles fractions was identified by XRD. The BET specific surface area was determined from N2 adsorption/desorption experiments. The particles morphology was characterized by SEM, while the particle size distribution was measured by laser light-scattering particle size analyzer. In a typical experiment, 50 mg of PS particles as the sorbent was mixed on a magnetic stirrer with 50 ml of dye aqueous solution with the initial concentration of 5, 10 and 20 ppm, at room temperature. At time intervals of 5 to 120 minutes aliquots was withdrawn, centrifuged, and pollutant concentration was measured. The concentration of MB and BG in the solution before and after sorption by PS was calculated according to the absorbance value at 665 nm (for MB) and 624 nm (for BG) determined by UV measurements performed on a UV–Vis spectrophotometer in the wavelength range of 300–800 nm. Capacity of MB and BG sorption by prepared PS particles was found to be above 86 % after 120 minutes.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts",
title = "Application of peach shells for the removal of methylene blue and brilliant green",
pages = "111-111",
url = "https://hdl.handle.net/21.15107/rcub_dais_398"
}

Marković, S., Stanković, A., Lopičić, Z., Stojanović, M.,& Uskoković, D.. (2013). Application of peach shells for the removal of methylene blue and brilliant green. in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 111-111.
https://hdl.handle.net/21.15107/rcub_dais_398

Marković S, Stanković A, Lopičić Z, Stojanović M, Uskoković D. Application of peach shells for the removal of methylene blue and brilliant green. in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts. 2013;:111-111.
https://hdl.handle.net/21.15107/rcub_dais_398 .

Marković, Smilja, Stanković, Ana, Lopičić, Zorica, Stojanović, M., Uskoković, Dragan, "Application of peach shells for the removal of methylene blue and brilliant green" in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts (2013):111-111,
https://hdl.handle.net/21.15107/rcub_dais_398 .