Voltammetric characteristics and determination of clothianidin using a bismuth bulk annular band electrode regenerated in situ
- 84 Downloads
A new DP AdSV method was developed for the determination of the pesticide clothianidin (Clo) based on its nitro group reduction at the in situ renovated bismuth bulk annular band working electrode (BiABE). Crucial point of the proposed procedure is simple and fast regeneration of the BiABE’s surface in the presence of testing solution, by application of the activation potential (E act = −1.5 V) and next short accumulation potential (E acc = −0.6 V). The voltammetric behaviour of clothianidin has been investigated by cyclic voltammetry (CV). The experimental variables such as; potential and time of activation or accumulation, pH, concentration of the supporting electrolyte, DP mode parameters and influence of possible interferences on the Clo signal response, were tested. In the optimized conditions, the peak current was proportional to the concentration of Clo over the range from 0.2 to 23.4 μmol L−1 (0.050 to 5.84 mg L−1) with R = 0.9996. The calculated value of LOD was 0.047 μmol L−1 (0.012 mg L−1) (at S/N = 3), and sensitivity was 0.094 μA/μmol L−1, for 5 s of the accumulation time. The relative standard deviation for 2 μmol L−1 of Clo was 4.2% (n = 5). The presented results were obtained without any pre-concentration time. Finally, the proposed method was successfully applied for determination of Clo in the spiked tap and river waters samples with the recovery test.
KeywordsBismuth bulk electrode Electrode regeneration Determination of clothianidin Environmental analysis
This work was supported by the Polish National Science Centre (Project No. 2015/19/B/ST5/01380).
- 1.World Health Organization, Food and Agriculture Organization of the United Nations (2011) Pesticide residues in food 2010 – Joint FAO/WHO Meeting on Pesticide Residues, Rome. http://www.fao.org/docrep/013/i1949e/i1949e00.htm. Accessed 27 Feb 2017
- 5.Johnson R (2010) Honey Bee Colony Collapse Disorder, Congressional Research Service Report for Congress. https://fas.org/sgp/crs/misc/RL33938.pdf. Accessed 27 Feb 2017
- 6.Australian Pesticides and Veterinary Medicines Authority (2011) Australian evaluation of the new active clothianidin, Canberra. http://apvma.gov.au/. Accessed 27 Feb 2017
- 12.Guziejewski D, Skrzypek S, Łuczak A, Ciesielski W (2011) Cathodic stripping voltammetry of clothianidin: application to environmental studies. Collect Czechoslov Chem Commun 76:131–142Google Scholar
- 13.Guziejewski D, Skrzypek S, Ciesielski W (2012) Application of catalytic hydrogen evolution in the presence of neonicotinoid insecticide clothianidin. Food Anal Methods 5:373–380Google Scholar
- 14.Brycht M, Vajdle O, Zbiljić J, Papp Z, Guzsvány V, Skrzypek S (2012) Renewable silver-amalgam film electrode for direct cathodic SWV determination of clothianidin, nitenpyram and thiacloprid neonicotinoid insecticides reducible in a fairly negative potential range. Int J Electrochem Sci 7:10652–10665Google Scholar
- 15.Brycht M, Skrzypek S, Guzsvány V, Berenji J (2013) Conditioning of renewable silver amalgam film electrode for the characterization of clothianidin and its determination in selected samples by adsorptive square-wave voltammetry. Talanta 117:242–249Google Scholar
- 17.Pappl Z, Guzsvány V, Švancara I, Vytřas K (2011) Voltammetric monitoring of photodegradation of clothianidin, nitenpyram and imidacloprid insecticides using a tricresyl phosphate-based carbon paste electrode. Int J Electrochem Sci 6:5161–5171Google Scholar
- 18.Guzsvány V, Kádár M, Papp Z, Bjelica L, Gaál F, Tóth K (2008) Monitoring of photocatalytic degradation of selected neonicotinoid insecticides by cathodic voltammetry with a bismuth film electrode. Electroanalysis 20:291–300Google Scholar
- 27.Grosser DK (1994) Cyclic voltammetry simulation and analysis of reaction mechanisms. VCH Publisher, New YorkGoogle Scholar