Tags

Type your tag names separated by a space and hit enter

Voltammetric determination of caffeine in beverage samples on bare boron-doped diamond electrode.
Food Chem. 2012 Dec 01; 135(3):1198-204.FC

Abstract

A sensitive and selective electrochemical method for the caffeine determination using bare boron-doped diamond electrode was developed. It was found that caffeine provided highly reproducible and well-defined irreversible oxidation peak at very positive potential. The effects of supporting electrolyte, pH and scan rate on the voltammetric response of caffeine oxidation were studied to select the optimum experimental conditions. Linear response of peak current on the concentration in the range from 4×10(-7) to 2.5×10(-5)M, good repeatability (RSD of 2.1%) and detection limit of 1.5×10(-7)M without any chemical modifications and electrochemical surface pretreatment were evaluated. The effect of possible interferents appeared to be negligible which evidently proved very good selectivity. The proposed method was successfully applied for the caffeine determination in commercially available beverage samples, with results in a close statistical agreement to those declared by manufacturer and HPLC used as independent method.

Authors+Show Affiliations

Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, Bratislava SK-812 37, Slovak Republic. lubomir.svorc@stuba.skNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22953843

Citation

Svorc, L'ubomír, et al. "Voltammetric Determination of Caffeine in Beverage Samples On Bare Boron-doped Diamond Electrode." Food Chemistry, vol. 135, no. 3, 2012, pp. 1198-204.
Svorc L, Tomčík P, Svítková J, et al. Voltammetric determination of caffeine in beverage samples on bare boron-doped diamond electrode. Food Chem. 2012;135(3):1198-204.
Svorc, L., Tomčík, P., Svítková, J., Rievaj, M., & Bustin, D. (2012). Voltammetric determination of caffeine in beverage samples on bare boron-doped diamond electrode. Food Chemistry, 135(3), 1198-204. https://doi.org/10.1016/j.foodchem.2012.05.052
Svorc L, et al. Voltammetric Determination of Caffeine in Beverage Samples On Bare Boron-doped Diamond Electrode. Food Chem. 2012 Dec 1;135(3):1198-204. PubMed PMID: 22953843.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Voltammetric determination of caffeine in beverage samples on bare boron-doped diamond electrode. AU - Svorc,L'ubomír, AU - Tomčík,Peter, AU - Svítková,Jana, AU - Rievaj,Miroslav, AU - Bustin,Dušan, Y1 - 2012/05/18/ PY - 2011/12/18/received PY - 2012/04/20/revised PY - 2012/05/10/accepted PY - 2012/9/8/entrez PY - 2012/9/8/pubmed PY - 2013/2/7/medline SP - 1198 EP - 204 JF - Food chemistry JO - Food Chem VL - 135 IS - 3 N2 - A sensitive and selective electrochemical method for the caffeine determination using bare boron-doped diamond electrode was developed. It was found that caffeine provided highly reproducible and well-defined irreversible oxidation peak at very positive potential. The effects of supporting electrolyte, pH and scan rate on the voltammetric response of caffeine oxidation were studied to select the optimum experimental conditions. Linear response of peak current on the concentration in the range from 4×10(-7) to 2.5×10(-5)M, good repeatability (RSD of 2.1%) and detection limit of 1.5×10(-7)M without any chemical modifications and electrochemical surface pretreatment were evaluated. The effect of possible interferents appeared to be negligible which evidently proved very good selectivity. The proposed method was successfully applied for the caffeine determination in commercially available beverage samples, with results in a close statistical agreement to those declared by manufacturer and HPLC used as independent method. SN - 1873-7072 UR - https://www.unboundmedicine.com/medline/citation/22953843/Voltammetric_determination_of_caffeine_in_beverage_samples_on_bare_boron_doped_diamond_electrode_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0308-8146(12)00880-1 DB - PRIME DP - Unbound Medicine ER -