Electrochemical Characteristics of Benzanthrone Studied via Cyclic Voltammetry: Charge Transfer Redox Processes

Document Type


Publication Date



The electrochemical behavior of benzanthrone (BA), a known mutagen and carcinogen, and an environmental pollutant widely found in aerosol particulates, was studied on a platinum electrode using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) in 0.15 M tetrabutylammonium hexafluorophosphate-acetonitrile solution. At scan rates < 500 mV/s BA exhibited two well defined cathodic and anodic peaks at -1234.909 ± 5.605 mV, and -1158.9 ± 10.88 mV, respectively. The plot of peak currents (ip) versus n1/2 scan rates were linear at n < 200 mV/s and concentrations 0.5 - 2.0 mM indicating a diffusion controlled one electron transfer reaction. Higher scan rates (500 - 2000 mV/s) exhibited quasi-reversible reactions with ipa/ipc > 1.5. At scan rates > 500 mV/s, a plot of Ip versus n1/2 deviates from linearity indicating quasi-reversible redox behavior. For all concentrations studied at scan rates < 200 mV/s ratios were 1.0650 ± 0.0091. The heterogeneous rate constant, k0, of the reversible diffusion-controlled reaction was determined as 3.51 x 10-5 ± 1.18 x 10-5 cm s-1. Via differential pulse voltammetry (DPV) the limit of detection, LOD ( ), on a bare platinum electrode was determined to be 1.69 x10-4 ± 1.5 x 10-5 M (for ipc) and 3.71 x 10-4 ± 3.56 x10-5 M (for ipa) at 200 mV/s.




The paper provides detailed electrochemical studies via cyclic voltammetry and differential pulse voltammetry of benzanthrone, a mutagenic and carcinogenic PAH. The studies in this paper are the most detailed electrochemical studies done on benzanthrone. The detailed electrochemical behavior, and implications of benzanthrone are examined and discussed



Tell us how this article helped you.