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Voltammetric behavior of benzo[a]pyrene at boron-doped diamond electrode: a study of its determination by adsorptive transfer stripping voltammetry based on the enhancement effect of anionic surfactant, sodium dodecylsulfate.
Talanta. 2011 Jul 15; 85(1):441-8.T

Abstract

Benzo[a]pyrene (BaP), a member of the polycyclic aromatic hydrocarbon (PAH) class, is one of the most potent PAH carcinogens. The electrochemical oxidation of BaP was first studied by cyclic voltammetry at the boron-doped diamond electrode in non-aqueous solvent (dimethylsulphoxide with lithium perchlorate). The compound was irreversibly oxidized in a single step at high positive potential, resulting in the well-resolved formation of a couple with a reduction and re-oxidation wave at much lower potentials. Special attention was given to the use of adsorptive stripping voltammetry together with a medium exchange procedure in aqueous and aqueous/surfactant solutions over the pH range of 2.0-8.0. The technique in aqueous solutions had little value in practice because of too small oxidation peak current. This problem was solved when surfactants were added into the sample solution, by which the oxidation peak currents of BaP were found enhanced dramatically. The employed surfactants were sodium dodecylsulfate (anionic, SDS), cetyltrimethylammonium bromide (cationic, CTAB) and Tween 80 (non-ionic). Using square-wave stripping mode, the compound yielded a well-defined voltammetric response in Britton-Robinson buffer, pH 2.0 containing 2.5×10(-4)M SDS at +1.07 V (vs. Ag/AgCl) (after 120s accumulation at +0.10 V). The process could be used to determine BaP in the concentration range of 16-200 nM (4.04-50.46 ng mL(-1)), with a detection limit of 2.86 nM (0.72 ng mL(-1)). This method was also applied to determine BaP in model water sample prepared by adding its different concentrations into tap water.

Authors+Show Affiliations

Yüzüncü Yıl University, Faculty of Science, Department of Analytical Chemistry, 65080 Van, Turkey.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21645723

Citation

Yardım, Yavuz, et al. "Voltammetric Behavior of Benzo[a]pyrene at Boron-doped Diamond Electrode: a Study of Its Determination By Adsorptive Transfer Stripping Voltammetry Based On the Enhancement Effect of Anionic Surfactant, Sodium Dodecylsulfate." Talanta, vol. 85, no. 1, 2011, pp. 441-8.
Yardım Y, Levent A, Keskin E, et al. Voltammetric behavior of benzo[a]pyrene at boron-doped diamond electrode: a study of its determination by adsorptive transfer stripping voltammetry based on the enhancement effect of anionic surfactant, sodium dodecylsulfate. Talanta. 2011;85(1):441-8.
Yardım, Y., Levent, A., Keskin, E., & Sentürk, Z. (2011). Voltammetric behavior of benzo[a]pyrene at boron-doped diamond electrode: a study of its determination by adsorptive transfer stripping voltammetry based on the enhancement effect of anionic surfactant, sodium dodecylsulfate. Talanta, 85(1), 441-8. https://doi.org/10.1016/j.talanta.2011.04.005
Yardım Y, et al. Voltammetric Behavior of Benzo[a]pyrene at Boron-doped Diamond Electrode: a Study of Its Determination By Adsorptive Transfer Stripping Voltammetry Based On the Enhancement Effect of Anionic Surfactant, Sodium Dodecylsulfate. Talanta. 2011 Jul 15;85(1):441-8. PubMed PMID: 21645723.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Voltammetric behavior of benzo[a]pyrene at boron-doped diamond electrode: a study of its determination by adsorptive transfer stripping voltammetry based on the enhancement effect of anionic surfactant, sodium dodecylsulfate. AU - Yardım,Yavuz, AU - Levent,Abdulkadir, AU - Keskin,Ertuğrul, AU - Sentürk,Zühre, Y1 - 2011/04/08/ PY - 2010/10/26/received PY - 2011/03/28/revised PY - 2011/04/03/accepted PY - 2011/6/8/entrez PY - 2011/6/8/pubmed PY - 2011/10/1/medline SP - 441 EP - 8 JF - Talanta JO - Talanta VL - 85 IS - 1 N2 - Benzo[a]pyrene (BaP), a member of the polycyclic aromatic hydrocarbon (PAH) class, is one of the most potent PAH carcinogens. The electrochemical oxidation of BaP was first studied by cyclic voltammetry at the boron-doped diamond electrode in non-aqueous solvent (dimethylsulphoxide with lithium perchlorate). The compound was irreversibly oxidized in a single step at high positive potential, resulting in the well-resolved formation of a couple with a reduction and re-oxidation wave at much lower potentials. Special attention was given to the use of adsorptive stripping voltammetry together with a medium exchange procedure in aqueous and aqueous/surfactant solutions over the pH range of 2.0-8.0. The technique in aqueous solutions had little value in practice because of too small oxidation peak current. This problem was solved when surfactants were added into the sample solution, by which the oxidation peak currents of BaP were found enhanced dramatically. The employed surfactants were sodium dodecylsulfate (anionic, SDS), cetyltrimethylammonium bromide (cationic, CTAB) and Tween 80 (non-ionic). Using square-wave stripping mode, the compound yielded a well-defined voltammetric response in Britton-Robinson buffer, pH 2.0 containing 2.5×10(-4)M SDS at +1.07 V (vs. Ag/AgCl) (after 120s accumulation at +0.10 V). The process could be used to determine BaP in the concentration range of 16-200 nM (4.04-50.46 ng mL(-1)), with a detection limit of 2.86 nM (0.72 ng mL(-1)). This method was also applied to determine BaP in model water sample prepared by adding its different concentrations into tap water. SN - 1873-3573 UR - https://www.unboundmedicine.com/medline/citation/21645723/Voltammetric_behavior_of_benzo[a]pyrene_at_boron_doped_diamond_electrode:_a_study_of_its_determination_by_adsorptive_transfer_stripping_voltammetry_based_on_the_enhancement_effect_of_anionic_surfactant_sodium_dodecylsulfate_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0039-9140(11)00319-5 DB - PRIME DP - Unbound Medicine ER -