Voltammetry of Benzo[a]pyrene in Aqueous and Nonaqueous Media: Adsorptive Stripping Voltammetric Determination at Pencil Graphite Electrode | Zendy

Keskin Ertuğrul | Zendy; Yardım Yavuz | Zendy; Şentürk Zühre | Zendy

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Voltammetry of Benzo[a]pyrene in Aqueous and Nonaqueous Media: Adsorptive Stripping Voltammetric Determination at Pencil Graphite Electrode

Author(s) -

Keskin Ertuğrul,

Yardım Yavuz,

Şentürk Zühre

Publication year - 2010

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.200900527

Subject(s) - detection limit , graphite , chemistry , stripping (fiber) , pyrene , electrode , electrochemistry , aqueous solution , voltammetry , buffer solution , benzo(a)pyrene , adsorptive stripping voltammetry , glassy carbon , anodic stripping voltammetry , nuclear chemistry , analytical chemistry (journal) , chromatography , inorganic chemistry , cyclic voltammetry , materials science , organic chemistry , composite material

A detailed study of the electrochemical oxidation of Benzo[ a ]pyrene (BaP) at the glassy carbon and pencil graphite electrodes was carried out in aqueous and nonaqueous media. Using square‐wave stripping mode, the compound yielded a well‐defined voltammetric response at pencil graphite electrode in acetate buffer, pH 4.8 at +1.13 V (vs. Ag/AgCl) (a preconcentration step being carried out at a fixed potential of +0.70 V for 180 s). The process could be used to determine BaP concentrations in the range 0.25–1.25 μM, with a detection limit of 0.027 μM (6.82 μg L −1 ). The applicability to assay of spiked human urine samples was also illustrated.

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