Work

Voltammetric Determination of Different Antioxidants in Petroleum Products by Working Gold Electrode

Year: 2013

Type: article

Abstract: The present paper deals with the problem of voltammetric determination of a mixture of amine-type antioxidant N-phenyl-1-naphthylamine (PNA) and phenol-type antioxidant butylated hydroxytoluene (BHT) in oil matrix by the method of linear sweep voltammetry using gold working electrode. Attention was focused on the effect of large excess of PNA on the curves of anodic oxidation of BHT. It was found that only more than tenfold excess of PNA disturbs the determination of the phenol-type antioxidant in the adopted supporting electrolyte. In such case it is necessary to reduce its content by its transformation into the corresponding nitrosamine by reaction with nitrous acid. The rate constants of this reaction were determined for two different concentrations of PNA.

Source: International Journal of Electrochemical Science

DOI: 10.1016/s1452-3981(23)14255-6

Authors: Markéta Tomášková, Jaromíra Chýlková, Oldřich Machalický, Renáta Šelešovská, Tomáš Navrátil

Institutions: University of Pardubice, Czech Academy of Sciences, Heyrovsky Institute

Language: English

Topic: Electrochemical Analysis and Applications

Subfield: Electrochemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,670

Funder: Grantová Agentura České Republiky