TY  - CONF
AU  - Đurović, Ana
AU  - Stojanović, Zorica
AU  - Grahovac, Nada
AU  - Kravić, Snežana
AU  - Suturović, Zvonimir
AU  - Švarc-Gajić, Jaroslava
AU  - Milanović, Spasenija
PY  - 2014
UR  - http://fiver.ifvcns.rs/handle/123456789/3307
AB  - In this work deaeration methods were investigated for chronopotentiometric determination of pesticide
imidacloprid [1-(6-chloro-3-pyridyimethyl)-N-nitroimidazolidin-2-ylideneamine] on glassy carbon
electrode. As a supporting electrolyte, a Britton-Robinson buffer was used. All investigations were
carried out in model systems. Cathodic peak of imidacloprid could not be registered only in BrittonRobinson buffer, due to electrochemical reduction of dissolved oxygen. For this reason, it was
necessary to investigate different deaeration methods for removing oxygen from the solution. Within
this, deaerations by various reductants and by passing a nitrogen stream were compared. Investigated
reductants were sodium sulfite, ascorbic acid, oxalic acid, potassium bromide and sodium bromide.
Combinations of a certain reductant and nitrogen were compared as well. Addition of a saturated
solution of sodium sulfite directly in the tested solution proved as the best deaeration method. This
method provided fast deaeration step as it took less than a minute for completely removing the
oxygen. An optimal concentration of the solution of sodium sulfite was also investigated.
Concentrations of sodium sulfite were tested in the range of 0.6 g/idm* to 230 gidm?. Considering the
height of the analytical signal and its reproducibility, concentration of 8.8 gldm? showed as optimal.
This method could be applied for the determination of imidacloprid in commercial formulations and
some real samples.
PB  - Novi Sad : University of Novi Sad, Institute of Food Technology
C3  - Proceedings, 2nd International Congress, Food Technology, Quality and Safety, 28-30 October 2014, Novi Sad, Serbia
T1  - Deaeration method for imidacloprid determination on glassy carbon electrode.
EP  - 175
SP  - 171
UR  - https://hdl.handle.net/21.15107/rcub_fiver_3307
ER  - 

@conference{
author = "Đurović, Ana and Stojanović, Zorica and Grahovac, Nada and Kravić, Snežana and Suturović, Zvonimir and Švarc-Gajić, Jaroslava and Milanović, Spasenija",
year = "2014",
abstract = "In this work deaeration methods were investigated for chronopotentiometric determination of pesticide
imidacloprid [1-(6-chloro-3-pyridyimethyl)-N-nitroimidazolidin-2-ylideneamine] on glassy carbon
electrode. As a supporting electrolyte, a Britton-Robinson buffer was used. All investigations were
carried out in model systems. Cathodic peak of imidacloprid could not be registered only in BrittonRobinson buffer, due to electrochemical reduction of dissolved oxygen. For this reason, it was
necessary to investigate different deaeration methods for removing oxygen from the solution. Within
this, deaerations by various reductants and by passing a nitrogen stream were compared. Investigated
reductants were sodium sulfite, ascorbic acid, oxalic acid, potassium bromide and sodium bromide.
Combinations of a certain reductant and nitrogen were compared as well. Addition of a saturated
solution of sodium sulfite directly in the tested solution proved as the best deaeration method. This
method provided fast deaeration step as it took less than a minute for completely removing the
oxygen. An optimal concentration of the solution of sodium sulfite was also investigated.
Concentrations of sodium sulfite were tested in the range of 0.6 g/idm* to 230 gidm?. Considering the
height of the analytical signal and its reproducibility, concentration of 8.8 gldm? showed as optimal.
This method could be applied for the determination of imidacloprid in commercial formulations and
some real samples.",
publisher = "Novi Sad : University of Novi Sad, Institute of Food Technology",
journal = "Proceedings, 2nd International Congress, Food Technology, Quality and Safety, 28-30 October 2014, Novi Sad, Serbia",
title = "Deaeration method for imidacloprid determination on glassy carbon electrode.",
pages = "175-171",
url = "https://hdl.handle.net/21.15107/rcub_fiver_3307"
}

Đurović, A., Stojanović, Z., Grahovac, N., Kravić, S., Suturović, Z., Švarc-Gajić, J.,& Milanović, S.. (2014). Deaeration method for imidacloprid determination on glassy carbon electrode.. in Proceedings, 2nd International Congress, Food Technology, Quality and Safety, 28-30 October 2014, Novi Sad, Serbia
Novi Sad : University of Novi Sad, Institute of Food Technology., 171-175.
https://hdl.handle.net/21.15107/rcub_fiver_3307

Đurović A, Stojanović Z, Grahovac N, Kravić S, Suturović Z, Švarc-Gajić J, Milanović S. Deaeration method for imidacloprid determination on glassy carbon electrode.. in Proceedings, 2nd International Congress, Food Technology, Quality and Safety, 28-30 October 2014, Novi Sad, Serbia. 2014;:171-175.
https://hdl.handle.net/21.15107/rcub_fiver_3307 .

Đurović, Ana, Stojanović, Zorica, Grahovac, Nada, Kravić, Snežana, Suturović, Zvonimir, Švarc-Gajić, Jaroslava, Milanović, Spasenija, "Deaeration method for imidacloprid determination on glassy carbon electrode." in Proceedings, 2nd International Congress, Food Technology, Quality and Safety, 28-30 October 2014, Novi Sad, Serbia (2014):171-175,
https://hdl.handle.net/21.15107/rcub_fiver_3307 .