Dinuclear copper(II) octaazamacrocyclic complex in a PVC coated GCE and graphite as a voltammetric sensor for determination of gallic acid and antioxidant capacity of wine samples
Samo za registrovane korisnike
2015
Autori
Petković, Branka B.Stanković, Dalibor
Milčić, Miloš K.
Sovilj, Sofija P.
Manojlović, Dragan D.
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
A novel efficient differential pulse voltammetric (DPV) method for determination gallic acid (GA) was developed by using an electrochemical sensor based on [Cu(2)tpmc](ClO4)(4) immobilized in PVC matrix and coated on graphite (CGE) or classy carbon rod (CGCE). The proposed method is based on the gallic acid oxidation process at formed [Cu(2)tpmcGA](3+) complex at the electrode surface. The complexation was explored by molecular modeling and DFT calculations. Voltammograms for both sensors, recorded in a HNO3 as a supporting electrolyte at pH 2 and measured in 2.5 x 10(-7) to 1.0 x 10(-4) M of GA, resulted with two linear calibration curves (for higher and lower GA concentration range). The detection limit at CGE was 1.48 x 10(-7) M, while at CGCE was 4.6 x 10(-6) M. CGE was successfully applied for the determination of the antioxidant capacity based on GA equivalents for white, rose and red wine samples.
Ključne reči:
Gallic acid / Dinuclear copper(II) octaazamacrocyclic complex / PVC matrix / Voltammetric sensorIzvor:
Talanta, 2015, 132, 513-519Izdavač:
- Elsevier Science Bv, Amsterdam
Finansiranje / projekti:
- Višeskalno strukturiranje polimernih nanokompozita i funkcionalnih materijala primenom različitih prekursora (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45022)
- Primena unapređenih oksidacionih procesa i nanostrukturisanih oksidnih materijala za uklanjanje zagađivača iz životne sredine, razvoj i optimizacija instrumentalnih tehnika za praćenje efikasnosti (RS-MESTD-Basic Research (BR or ON)-172030)
Napomena:
- Peer-reviewed manuscript: http://cherry.chem.bg.ac.rs/handle/123456789/3363
- Supplementary material: http://cherry.chem.bg.ac.rs/handle/123456789/3364
DOI: 10.1016/j.talanta.2014.09.025
ISSN: 0039-9140
PubMed: 25476338
WoS: 000349278900068
Scopus: 2-s2.0-84908408933
Institucija/grupa
Hemijski fakultet / Faculty of ChemistryTY - JOUR AU - Petković, Branka B. AU - Stanković, Dalibor AU - Milčić, Miloš K. AU - Sovilj, Sofija P. AU - Manojlović, Dragan D. PY - 2015 UR - https://cherry.chem.bg.ac.rs/handle/123456789/1654 AB - A novel efficient differential pulse voltammetric (DPV) method for determination gallic acid (GA) was developed by using an electrochemical sensor based on [Cu(2)tpmc](ClO4)(4) immobilized in PVC matrix and coated on graphite (CGE) or classy carbon rod (CGCE). The proposed method is based on the gallic acid oxidation process at formed [Cu(2)tpmcGA](3+) complex at the electrode surface. The complexation was explored by molecular modeling and DFT calculations. Voltammograms for both sensors, recorded in a HNO3 as a supporting electrolyte at pH 2 and measured in 2.5 x 10(-7) to 1.0 x 10(-4) M of GA, resulted with two linear calibration curves (for higher and lower GA concentration range). The detection limit at CGE was 1.48 x 10(-7) M, while at CGCE was 4.6 x 10(-6) M. CGE was successfully applied for the determination of the antioxidant capacity based on GA equivalents for white, rose and red wine samples. PB - Elsevier Science Bv, Amsterdam T2 - Talanta T1 - Dinuclear copper(II) octaazamacrocyclic complex in a PVC coated GCE and graphite as a voltammetric sensor for determination of gallic acid and antioxidant capacity of wine samples VL - 132 SP - 513 EP - 519 DO - 10.1016/j.talanta.2014.09.025 ER -
@article{ author = "Petković, Branka B. and Stanković, Dalibor and Milčić, Miloš K. and Sovilj, Sofija P. and Manojlović, Dragan D.", year = "2015", abstract = "A novel efficient differential pulse voltammetric (DPV) method for determination gallic acid (GA) was developed by using an electrochemical sensor based on [Cu(2)tpmc](ClO4)(4) immobilized in PVC matrix and coated on graphite (CGE) or classy carbon rod (CGCE). The proposed method is based on the gallic acid oxidation process at formed [Cu(2)tpmcGA](3+) complex at the electrode surface. The complexation was explored by molecular modeling and DFT calculations. Voltammograms for both sensors, recorded in a HNO3 as a supporting electrolyte at pH 2 and measured in 2.5 x 10(-7) to 1.0 x 10(-4) M of GA, resulted with two linear calibration curves (for higher and lower GA concentration range). The detection limit at CGE was 1.48 x 10(-7) M, while at CGCE was 4.6 x 10(-6) M. CGE was successfully applied for the determination of the antioxidant capacity based on GA equivalents for white, rose and red wine samples.", publisher = "Elsevier Science Bv, Amsterdam", journal = "Talanta", title = "Dinuclear copper(II) octaazamacrocyclic complex in a PVC coated GCE and graphite as a voltammetric sensor for determination of gallic acid and antioxidant capacity of wine samples", volume = "132", pages = "513-519", doi = "10.1016/j.talanta.2014.09.025" }
Petković, B. B., Stanković, D., Milčić, M. K., Sovilj, S. P.,& Manojlović, D. D.. (2015). Dinuclear copper(II) octaazamacrocyclic complex in a PVC coated GCE and graphite as a voltammetric sensor for determination of gallic acid and antioxidant capacity of wine samples. in Talanta Elsevier Science Bv, Amsterdam., 132, 513-519. https://doi.org/10.1016/j.talanta.2014.09.025
Petković BB, Stanković D, Milčić MK, Sovilj SP, Manojlović DD. Dinuclear copper(II) octaazamacrocyclic complex in a PVC coated GCE and graphite as a voltammetric sensor for determination of gallic acid and antioxidant capacity of wine samples. in Talanta. 2015;132:513-519. doi:10.1016/j.talanta.2014.09.025 .
Petković, Branka B., Stanković, Dalibor, Milčić, Miloš K., Sovilj, Sofija P., Manojlović, Dragan D., "Dinuclear copper(II) octaazamacrocyclic complex in a PVC coated GCE and graphite as a voltammetric sensor for determination of gallic acid and antioxidant capacity of wine samples" in Talanta, 132 (2015):513-519, https://doi.org/10.1016/j.talanta.2014.09.025 . .