Drljević-Đurić, Katica

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  • Drljević-Đurić, Katica (3)
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Author's Bibliography

The qualitative determination of oseltamivir phosphate in Tamiflu® capsule by cyclic voltammetry

Avramov-Ivić, Milka; Petrović, Slobodan; Mijin, Dušan; Drljević-Đurić, Katica

(Association of Chemical Engineers of Serbia, 2011)

TY  - JOUR
AU  - Avramov-Ivić, Milka
AU  - Petrović, Slobodan
AU  - Mijin, Dušan
AU  - Drljević-Đurić, Katica
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1783
AB  - A gold electrode was used in the voltammetric determination of oseltamivir phosphate standard in 0.05 M NaHCO3. Oseltamivir phosphate as a standard and as a component of Tamiflu® capsule exhibited the identical cyclic voltammogram. The peaks originating from excipients in the capsule did not appear under the applied electrochemical conditions. An electrochemical method for the qualitative determination of oseltamivir phosphate in Tamiflu® capsules by cyclic voltammetry was developed. The presence of oseltamivir phosphate as standard and as a content of Tamiflu® capsule in electrolyte as well as their concentrations were simultaneously checked by HPLC. The lack of the current/concentration dependency was established. The non-pretreated glassy carbon electrode cannot be used for the determination of oseltamivir phosphate under identical experimental conditions presented for the gold electrode.
AB  - Aktuelna ispitivanja lekova zahtevaju razvoj brzih metoda za prepoznavanje standarda lekova u komercijalnim kapsulama i tabletama. U opsegu potencijala od -1,2 V kao i od -0,8 V do 1,0 V oseltamivir-fosfat kao standard i sastojak Tamiflu® kapsule podleže oksidativno-reduktivnoj reakciji između -0,5 i -0,7 V kao i anodnoj reakciji počevši od 0.4 V, sa platoom struja uočenih u celom opsegu potencijala formiranja oksida na elektrodi od zlata. Oseltamivir-fosfat kao standard i kao komponenta Tamiflu® kapsule snižava struje redukcije oksida na zlatu. Držanje potencijala na vrednostima pojave pikova ne utiče na promenu cikličnog voltamograma, tj. na navedene reakcije. Cikliziranje potencijala u toku više časova ne dovodi do promene cikličnog voltamograma u oba opsega potencijala. Ciklični voltamogram za koncentraciju oseltamivir-fosfata kao standarda i kao sastojka Tamiflu® kapsule od 0,025 mg cm-3 bio je identičan i po dodatku naredne dve koncentracije pa se na elektrodi od zlata ne može ispitivati i koncentraciona zavisnost u 0,05 M NaHCO3. Koncentracije leka u elektrolitu su potvrđene simultanom HPLC analizom prema aktuelnoj farmakopeji. Ekscipijenti prisutni u Tamiflu® kapsuli nisu ni na koji način uticali na ponašanje oseltamivir-fosfata kao standarda, tj. neaktivni su pod primenjenim eksperimentalnim uslovima. Elektroda od staklastog ugljenika je takođe testirana u oba opsega potencijala i pod identičnim eksperimentalnim uslovima je potpuno neaktivna, za razliku od elektrode od zlata, u prisustvu oseltamivir-fosfata kao standarda i kao sastojka Tamiflu® kapsule. Elektroda od zlata se u navedenim opsezima potencijala koristeći 0,05 M NaHCO3 kao elektrolit i pod navedenim elektrohemijskim uslovima može efikasno koristiti za kvalitativno određivanje oseltamivir-fosfata u Tamiflu kapsuli.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - The qualitative determination of oseltamivir phosphate in Tamiflu® capsule by cyclic voltammetry
T1  - Kvalitativno određivanje oseltamivir-fosfata u Tamiflu® kapsulama pomoću ciklične voltametrije
EP  - 91
IS  - 1
SP  - 87
VL  - 65
DO  - 10.2298/HEMIND100908070A
ER  - 
@article{
author = "Avramov-Ivić, Milka and Petrović, Slobodan and Mijin, Dušan and Drljević-Đurić, Katica",
year = "2011",
abstract = "A gold electrode was used in the voltammetric determination of oseltamivir phosphate standard in 0.05 M NaHCO3. Oseltamivir phosphate as a standard and as a component of Tamiflu® capsule exhibited the identical cyclic voltammogram. The peaks originating from excipients in the capsule did not appear under the applied electrochemical conditions. An electrochemical method for the qualitative determination of oseltamivir phosphate in Tamiflu® capsules by cyclic voltammetry was developed. The presence of oseltamivir phosphate as standard and as a content of Tamiflu® capsule in electrolyte as well as their concentrations were simultaneously checked by HPLC. The lack of the current/concentration dependency was established. The non-pretreated glassy carbon electrode cannot be used for the determination of oseltamivir phosphate under identical experimental conditions presented for the gold electrode., Aktuelna ispitivanja lekova zahtevaju razvoj brzih metoda za prepoznavanje standarda lekova u komercijalnim kapsulama i tabletama. U opsegu potencijala od -1,2 V kao i od -0,8 V do 1,0 V oseltamivir-fosfat kao standard i sastojak Tamiflu® kapsule podleže oksidativno-reduktivnoj reakciji između -0,5 i -0,7 V kao i anodnoj reakciji počevši od 0.4 V, sa platoom struja uočenih u celom opsegu potencijala formiranja oksida na elektrodi od zlata. Oseltamivir-fosfat kao standard i kao komponenta Tamiflu® kapsule snižava struje redukcije oksida na zlatu. Držanje potencijala na vrednostima pojave pikova ne utiče na promenu cikličnog voltamograma, tj. na navedene reakcije. Cikliziranje potencijala u toku više časova ne dovodi do promene cikličnog voltamograma u oba opsega potencijala. Ciklični voltamogram za koncentraciju oseltamivir-fosfata kao standarda i kao sastojka Tamiflu® kapsule od 0,025 mg cm-3 bio je identičan i po dodatku naredne dve koncentracije pa se na elektrodi od zlata ne može ispitivati i koncentraciona zavisnost u 0,05 M NaHCO3. Koncentracije leka u elektrolitu su potvrđene simultanom HPLC analizom prema aktuelnoj farmakopeji. Ekscipijenti prisutni u Tamiflu® kapsuli nisu ni na koji način uticali na ponašanje oseltamivir-fosfata kao standarda, tj. neaktivni su pod primenjenim eksperimentalnim uslovima. Elektroda od staklastog ugljenika je takođe testirana u oba opsega potencijala i pod identičnim eksperimentalnim uslovima je potpuno neaktivna, za razliku od elektrode od zlata, u prisustvu oseltamivir-fosfata kao standarda i kao sastojka Tamiflu® kapsule. Elektroda od zlata se u navedenim opsezima potencijala koristeći 0,05 M NaHCO3 kao elektrolit i pod navedenim elektrohemijskim uslovima može efikasno koristiti za kvalitativno određivanje oseltamivir-fosfata u Tamiflu kapsuli.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "The qualitative determination of oseltamivir phosphate in Tamiflu® capsule by cyclic voltammetry, Kvalitativno određivanje oseltamivir-fosfata u Tamiflu® kapsulama pomoću ciklične voltametrije",
pages = "91-87",
number = "1",
volume = "65",
doi = "10.2298/HEMIND100908070A"
}
Avramov-Ivić, M., Petrović, S., Mijin, D.,& Drljević-Đurić, K.. (2011). The qualitative determination of oseltamivir phosphate in Tamiflu® capsule by cyclic voltammetry. in Hemijska industrija
Association of Chemical Engineers of Serbia., 65(1), 87-91.
https://doi.org/10.2298/HEMIND100908070A
Avramov-Ivić M, Petrović S, Mijin D, Drljević-Đurić K. The qualitative determination of oseltamivir phosphate in Tamiflu® capsule by cyclic voltammetry. in Hemijska industrija. 2011;65(1):87-91.
doi:10.2298/HEMIND100908070A .
Avramov-Ivić, Milka, Petrović, Slobodan, Mijin, Dušan, Drljević-Đurić, Katica, "The qualitative determination of oseltamivir phosphate in Tamiflu® capsule by cyclic voltammetry" in Hemijska industrija, 65, no. 1 (2011):87-91,
https://doi.org/10.2298/HEMIND100908070A . .
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A Voltammetric Method for the Quantitative Determination of Midecamycin Compared to Its Simultaneous HPLC Determination

Drljević-Đurić, Katica; Avramov-Ivić, Milka; Petrović, Slobodan; Mijin, Dušan; Jadranin, Milka

(Pleiades Publishing Inc, Moscow, 2011)

TY  - JOUR
AU  - Drljević-Đurić, Katica
AU  - Avramov-Ivić, Milka
AU  - Petrović, Slobodan
AU  - Mijin, Dušan
AU  - Jadranin, Milka
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1871
AB  - The aim of this study was to present the quantitative determination of midecamycin at a gold electrode in 0.05 M NaHCO3 using cyclic linear sweep voltammetry. It was found that the value of the oxidative peak of pure midecamycin at 0.85 V vs. SCE at a scan rate of 50 mV s(-1) is a linear function of the concentration in the range 0.1693-0.3289 mg cm(-3). The value of its reductive peak at 0.3 V vs. SCE is a linear function of the concentration in the range 0.11396-0.3802 mg cm(-3). HPLC analysis of the bulk of electrolyte confirmed the data obtained by analysis of the current peak values concerning the correlation with each investigated concentration of midecamycin. By MS spectrometry no degradation products were found in electrolyte during its quantitative determination.
PB  - Pleiades Publishing Inc, Moscow
T2  - Russian Journal of Electrochemistry
T1  - A Voltammetric Method for the Quantitative Determination of Midecamycin Compared to Its Simultaneous HPLC Determination
EP  - 786
IS  - 7
SP  - 781
VL  - 47
DO  - 10.1134/S1023193511070056
ER  - 
@article{
author = "Drljević-Đurić, Katica and Avramov-Ivić, Milka and Petrović, Slobodan and Mijin, Dušan and Jadranin, Milka",
year = "2011",
abstract = "The aim of this study was to present the quantitative determination of midecamycin at a gold electrode in 0.05 M NaHCO3 using cyclic linear sweep voltammetry. It was found that the value of the oxidative peak of pure midecamycin at 0.85 V vs. SCE at a scan rate of 50 mV s(-1) is a linear function of the concentration in the range 0.1693-0.3289 mg cm(-3). The value of its reductive peak at 0.3 V vs. SCE is a linear function of the concentration in the range 0.11396-0.3802 mg cm(-3). HPLC analysis of the bulk of electrolyte confirmed the data obtained by analysis of the current peak values concerning the correlation with each investigated concentration of midecamycin. By MS spectrometry no degradation products were found in electrolyte during its quantitative determination.",
publisher = "Pleiades Publishing Inc, Moscow",
journal = "Russian Journal of Electrochemistry",
title = "A Voltammetric Method for the Quantitative Determination of Midecamycin Compared to Its Simultaneous HPLC Determination",
pages = "786-781",
number = "7",
volume = "47",
doi = "10.1134/S1023193511070056"
}
Drljević-Đurić, K., Avramov-Ivić, M., Petrović, S., Mijin, D.,& Jadranin, M.. (2011). A Voltammetric Method for the Quantitative Determination of Midecamycin Compared to Its Simultaneous HPLC Determination. in Russian Journal of Electrochemistry
Pleiades Publishing Inc, Moscow., 47(7), 781-786.
https://doi.org/10.1134/S1023193511070056
Drljević-Đurić K, Avramov-Ivić M, Petrović S, Mijin D, Jadranin M. A Voltammetric Method for the Quantitative Determination of Midecamycin Compared to Its Simultaneous HPLC Determination. in Russian Journal of Electrochemistry. 2011;47(7):781-786.
doi:10.1134/S1023193511070056 .
Drljević-Đurić, Katica, Avramov-Ivić, Milka, Petrović, Slobodan, Mijin, Dušan, Jadranin, Milka, "A Voltammetric Method for the Quantitative Determination of Midecamycin Compared to Its Simultaneous HPLC Determination" in Russian Journal of Electrochemistry, 47, no. 7 (2011):781-786,
https://doi.org/10.1134/S1023193511070056 . .
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Voltammetric and differential pulse determination of roxithromycin

Drljević-Đurić, Katica; Jović, Vladimir D.; Lačnjevac, Uroš; Avramov-Ivić, Milka; Petrović, Slobodan; Mijin, Dušan; Đorđević, S. B.

(Pergamon-Elsevier Science Ltd, Oxford, 2010)

TY  - JOUR
AU  - Drljević-Đurić, Katica
AU  - Jović, Vladimir D.
AU  - Lačnjevac, Uroš
AU  - Avramov-Ivić, Milka
AU  - Petrović, Slobodan
AU  - Mijin, Dušan
AU  - Đorđević, S. B.
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1718
AB  - The oxidative behavior of antibiotic roxithromycin standard was studied at a gold electrode in 0.05 M NaHCO3 using cyclic linear sweep voltammetry and differential pulse voltammetry. It was found that the value of the oxidative peak of pure roxithromycin at 0.81 V vs. SCE in 0.05 M NaHCO3 at a scan rate of 50 mV s(-1) is a linear function of the concentration in a range 0.10006-0.654 mg cm(-3). It was also found that peak current density at 0.75 V vs. SCE at a scan rate of 2 mVs(-1), pulse amplitude of 25 mV and pulse time of 0.1 s exhibits linear dependence on the concentration of roxithromycin from 0.1006 to 0.476 mg cm(-3). Roxithromycin as a content of solid dosage form and urine was quantitatively determined and the obtained results were checked by HPLC.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Voltammetric and differential pulse determination of roxithromycin
EP  - 52
IS  - 1
SP  - 47
VL  - 56
DO  - 10.1016/j.electacta.2010.09.067
ER  - 
@article{
author = "Drljević-Đurić, Katica and Jović, Vladimir D. and Lačnjevac, Uroš and Avramov-Ivić, Milka and Petrović, Slobodan and Mijin, Dušan and Đorđević, S. B.",
year = "2010",
abstract = "The oxidative behavior of antibiotic roxithromycin standard was studied at a gold electrode in 0.05 M NaHCO3 using cyclic linear sweep voltammetry and differential pulse voltammetry. It was found that the value of the oxidative peak of pure roxithromycin at 0.81 V vs. SCE in 0.05 M NaHCO3 at a scan rate of 50 mV s(-1) is a linear function of the concentration in a range 0.10006-0.654 mg cm(-3). It was also found that peak current density at 0.75 V vs. SCE at a scan rate of 2 mVs(-1), pulse amplitude of 25 mV and pulse time of 0.1 s exhibits linear dependence on the concentration of roxithromycin from 0.1006 to 0.476 mg cm(-3). Roxithromycin as a content of solid dosage form and urine was quantitatively determined and the obtained results were checked by HPLC.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Voltammetric and differential pulse determination of roxithromycin",
pages = "52-47",
number = "1",
volume = "56",
doi = "10.1016/j.electacta.2010.09.067"
}
Drljević-Đurić, K., Jović, V. D., Lačnjevac, U., Avramov-Ivić, M., Petrović, S., Mijin, D.,& Đorđević, S. B.. (2010). Voltammetric and differential pulse determination of roxithromycin. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 56(1), 47-52.
https://doi.org/10.1016/j.electacta.2010.09.067
Drljević-Đurić K, Jović VD, Lačnjevac U, Avramov-Ivić M, Petrović S, Mijin D, Đorđević SB. Voltammetric and differential pulse determination of roxithromycin. in Electrochimica Acta. 2010;56(1):47-52.
doi:10.1016/j.electacta.2010.09.067 .
Drljević-Đurić, Katica, Jović, Vladimir D., Lačnjevac, Uroš, Avramov-Ivić, Milka, Petrović, Slobodan, Mijin, Dušan, Đorđević, S. B., "Voltammetric and differential pulse determination of roxithromycin" in Electrochimica Acta, 56, no. 1 (2010):47-52,
https://doi.org/10.1016/j.electacta.2010.09.067 . .
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