SciELO - Scientific Electronic Library Online

vol.71Synthesis, Characterization and Antibacterial Properties of N,N'-Bis(4-dimethylaminobenzylidene)benzene-1,3-diamine as New Schiff Base Ligand and its Binuclear Zn(II), Cd(II) ComplexesMonitoring of So2, No x and Nh3 emission from burning of solid wastes at Awotan and Lapite dumpsites, Ibadan, Nigeria author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand



Related links

  • On index processCited by Google
  • On index processSimilars in Google


South African Journal of Chemistry

On-line version ISSN 1996-840X
Print version ISSN 0379-4350


NIGUSO, Temesgen Takele; SORETA, Tesfaye Refera  and  WOLDEMARIAM, Ephrem Tilahun. Electrochemical determination of 2,4-dichlorophenoxyacetic acid using bismuth film modified screen-printed carbon electrode. S.Afr.j.chem. (Online) [online]. 2018, vol.71, pp.160-165. ISSN 1996-840X.

In this work, the development of an electrochemical method for the determination of 2,4-dichlorophenoxy acetic acid (2,4-D) (indirectly by converting to its electroactive nitrated form) using a modified screen-printed carbon electrode with bismuth film is reported. The electrode modification has been done by a single potential step electrodeposition of bismuth film on screen-printed carbon electrodes. Under the optimized conditions, the nitrated 2,4-D showed a dynamic linear concentration range in pH 11 buffer from 11.1 to 74.3 um with regression coefficient (R) of 0.9988. The limits of detection and quantification were 3.15 um and 10.5 um, respectively. The proposed method offered higher sensitivity compared to bare screen-printed carbon electrodes. The modified electrode showed good reproducibility, repeatability, stability and recovery for the analysis of 2,4-D. The developed method was used for electroanalysis of 2,4-D in soil and water samples collected from Sito Kebele, Dedo district Jimma zone.

Keywords : Electroanalysis; herbicide; screen-printed carbon electrodes; bismuth film; 2,4-dichlorophenoxyacetic acid.

        · text in English     · English ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License