TY  - CONF
AU  - Stojanović, Z.
AU  - Đurović, A.
AU  - Kravić, S.
AU  - Suturović, Z.
AU  - Brezo, T.
AU  - Richtera, I
AU  - Bytešníková, Z
AU  - Grahovac, Nada
PY  - 2019
UR  - http://fiver.ifvcns.rs/handle/123456789/3704
AB  - Catechin is a flavonoid compound with polyphenolic structure naturally occurring in plants, fruits, tea, red
wine and cacao products. Many beneficial effects are associated with catechin consumption such as
antioxidant, anticarcinogenic, anti-inflammatory, antiatherogenic, antibacterial and antiviral activity.
Determination of catechin is typically based on the use of high-performance liquid chromatography, but also
methods such as spectrophotometry and capillary electrophoresis are reported.
In this work we investigated the use of different modifications of a carbon paste electrode (CPE) for
voltammetric determination of catechin. The reason for introducing a modifier into the carbon paste was to
increase the sensitivity of the voltammeircic techniques, due to the catalytic effect of the modifier on the
electrode processes. Multi-walled carbon nanotubes (MWCNTs), antimony(Ill) oxide and bismuth
nanoparticles are investigated as bulk modifiers for preparation of CPE with concentration of 5% (w/w).
Electroanalytical measurements are performed in 0.1 M phosphate buffer pH 7.0 using cyclic voltammetry
and square wave voltammetry, in the concentration range from 1 to 20 mg/dm* of catechin.
Two oxidation peaks of catechin are observed for all studied modified CPEs and bare CPE, with significantly
higher intensity of the first peak. The results also showed improvement of sensitivity by using the modified
CPEs in comparison to unmodified CPE. The application of MWCNTs as a modifier contributed to the
highest sensitivity for catechin determination in relation to the other modifiers. These preliminary results
show that MWCNTs modified CPE can be used as a very sensitive sensor for catechin determination in real
samples.
PB  - Novi Sad : Univerzitet u Novom Sadu, Tehnološki fakultet
C3  - Book of Proceedings, 21st Danube-Kris-Mures-Tisza (DKMT) Euroregional Conference on Environment and Health, University of Novi Sad, Faculty of Technology, Novi Sad, Serbia.
T1  - Application of the modified carbon paste electrodes for determination of catechin
EP  - 129
SP  - 126
UR  - https://hdl.handle.net/21.15107/rcub_fiver_3704
ER  - 

@conference{
author = "Stojanović, Z. and Đurović, A. and Kravić, S. and Suturović, Z. and Brezo, T. and Richtera, I and Bytešníková, Z and Grahovac, Nada",
year = "2019",
abstract = "Catechin is a flavonoid compound with polyphenolic structure naturally occurring in plants, fruits, tea, red
wine and cacao products. Many beneficial effects are associated with catechin consumption such as
antioxidant, anticarcinogenic, anti-inflammatory, antiatherogenic, antibacterial and antiviral activity.
Determination of catechin is typically based on the use of high-performance liquid chromatography, but also
methods such as spectrophotometry and capillary electrophoresis are reported.
In this work we investigated the use of different modifications of a carbon paste electrode (CPE) for
voltammetric determination of catechin. The reason for introducing a modifier into the carbon paste was to
increase the sensitivity of the voltammeircic techniques, due to the catalytic effect of the modifier on the
electrode processes. Multi-walled carbon nanotubes (MWCNTs), antimony(Ill) oxide and bismuth
nanoparticles are investigated as bulk modifiers for preparation of CPE with concentration of 5% (w/w).
Electroanalytical measurements are performed in 0.1 M phosphate buffer pH 7.0 using cyclic voltammetry
and square wave voltammetry, in the concentration range from 1 to 20 mg/dm* of catechin.
Two oxidation peaks of catechin are observed for all studied modified CPEs and bare CPE, with significantly
higher intensity of the first peak. The results also showed improvement of sensitivity by using the modified
CPEs in comparison to unmodified CPE. The application of MWCNTs as a modifier contributed to the
highest sensitivity for catechin determination in relation to the other modifiers. These preliminary results
show that MWCNTs modified CPE can be used as a very sensitive sensor for catechin determination in real
samples.",
publisher = "Novi Sad : Univerzitet u Novom Sadu, Tehnološki fakultet",
journal = "Book of Proceedings, 21st Danube-Kris-Mures-Tisza (DKMT) Euroregional Conference on Environment and Health, University of Novi Sad, Faculty of Technology, Novi Sad, Serbia.",
title = "Application of the modified carbon paste electrodes for determination of catechin",
pages = "129-126",
url = "https://hdl.handle.net/21.15107/rcub_fiver_3704"
}

Stojanović, Z., Đurović, A., Kravić, S., Suturović, Z., Brezo, T., Richtera, I., Bytešníková, Z.,& Grahovac, N.. (2019). Application of the modified carbon paste electrodes for determination of catechin. in Book of Proceedings, 21st Danube-Kris-Mures-Tisza (DKMT) Euroregional Conference on Environment and Health, University of Novi Sad, Faculty of Technology, Novi Sad, Serbia.
Novi Sad : Univerzitet u Novom Sadu, Tehnološki fakultet., 126-129.
https://hdl.handle.net/21.15107/rcub_fiver_3704

Stojanović Z, Đurović A, Kravić S, Suturović Z, Brezo T, Richtera I, Bytešníková Z, Grahovac N. Application of the modified carbon paste electrodes for determination of catechin. in Book of Proceedings, 21st Danube-Kris-Mures-Tisza (DKMT) Euroregional Conference on Environment and Health, University of Novi Sad, Faculty of Technology, Novi Sad, Serbia.. 2019;:126-129.
https://hdl.handle.net/21.15107/rcub_fiver_3704 .

Stojanović, Z., Đurović, A., Kravić, S., Suturović, Z., Brezo, T., Richtera, I, Bytešníková, Z, Grahovac, Nada, "Application of the modified carbon paste electrodes for determination of catechin" in Book of Proceedings, 21st Danube-Kris-Mures-Tisza (DKMT) Euroregional Conference on Environment and Health, University of Novi Sad, Faculty of Technology, Novi Sad, Serbia. (2019):126-129,
https://hdl.handle.net/21.15107/rcub_fiver_3704 .

TY  - CONF
AU  - Đurović, A.
AU  - Stojanović, Z.
AU  - Kravić, S.
AU  - Suturović, Z.
AU  - Brezo, T.
AU  - Grahovac, Nada
PY  - 2017
UR  - http://fiver.ifvcns.rs/handle/123456789/3701
AB  - This paper describes chronopotentiontetrit method for determination of herbicide metamitron tising thin film  mercury electrode and glassy carbon electrode as working electrodes. At both e working electrodes one well defined reductive peak appeared im Britton-Robinson butler.
C3  - The International Conference on Electrochemical Sensors “Mátrafüred'17”, Hungary
T1  - Simple and rapid method for chronopotentiometric determination of metamitron in water samples and pesticide formulations
EP  - 16
SP  - 11
UR  - https://hdl.handle.net/21.15107/rcub_fiver_3701
ER  - 

@conference{
author = "Đurović, A. and Stojanović, Z. and Kravić, S. and Suturović, Z. and Brezo, T. and Grahovac, Nada",
year = "2017",
abstract = "This paper describes chronopotentiontetrit method for determination of herbicide metamitron tising thin film  mercury electrode and glassy carbon electrode as working electrodes. At both e working electrodes one well defined reductive peak appeared im Britton-Robinson butler.",
journal = "The International Conference on Electrochemical Sensors “Mátrafüred'17”, Hungary",
title = "Simple and rapid method for chronopotentiometric determination of metamitron in water samples and pesticide formulations",
pages = "16-11",
url = "https://hdl.handle.net/21.15107/rcub_fiver_3701"
}

Đurović, A., Stojanović, Z., Kravić, S., Suturović, Z., Brezo, T.,& Grahovac, N.. (2017). Simple and rapid method for chronopotentiometric determination of metamitron in water samples and pesticide formulations. in The International Conference on Electrochemical Sensors “Mátrafüred'17”, Hungary, 11-16.
https://hdl.handle.net/21.15107/rcub_fiver_3701

Đurović A, Stojanović Z, Kravić S, Suturović Z, Brezo T, Grahovac N. Simple and rapid method for chronopotentiometric determination of metamitron in water samples and pesticide formulations. in The International Conference on Electrochemical Sensors “Mátrafüred'17”, Hungary. 2017;:11-16.
https://hdl.handle.net/21.15107/rcub_fiver_3701 .

Đurović, A., Stojanović, Z., Kravić, S., Suturović, Z., Brezo, T., Grahovac, Nada, "Simple and rapid method for chronopotentiometric determination of metamitron in water samples and pesticide formulations" in The International Conference on Electrochemical Sensors “Mátrafüred'17”, Hungary (2017):11-16,
https://hdl.handle.net/21.15107/rcub_fiver_3701 .