Jump to main content
Jump to site search

Issue 3, 2014
Previous Article Next Article

The boron-doped diamond electrode voltammetric method for ultra-trace determination of the fungicide pyraclostrobin and evaluation of its photodegradation and thermal degradation

Author affiliations

Abstract

The quasi-reversible electrochemical oxidation of pyraclostrobin on a boron-doped diamond (BDD) electrode is reported. Two well defined oxidation peaks (around +1300 to +1650 mV) were observed allowing the development of a square-wave voltammetric method for the ultra-trace determination of pyraclostrobin in natural waters and in grape juice. The anodic scanning was employed (from +1050 to +1500 mV) with a peak maximum at +1280 mV using acetate buffer (0.050 mol L−1; pH 4.0). The linear response (R2 > 0.99) was up to 2.0 × 10−5 mol L−1 (7.8 mg L−1) with a limit of quantification of 8.2 × 10−7 mol L−1 (0.32 mg L−1). Recovery values obtained using analyte fortified water samples were between 94 and 102%. There was no significant thermal degradation of pyraclostrobin in the solution heated at 60 °C for 2 h. The kinetics of degradation of pyraclostrobin (at a concentration of 1.0 × 10−3 mol L−1) upon exposure to UV radiation was also evaluated.

Graphical abstract: The boron-doped diamond electrode voltammetric method for ultra-trace determination of the fungicide pyraclostrobin and evaluation of its photodegradation and thermal degradation

Back to tab navigation

Publication details

The article was received on 11 Oct 2013, accepted on 27 Nov 2013 and first published on 28 Nov 2013


Article type: Paper
DOI: 10.1039/C3AY41786G
Citation: Anal. Methods, 2014,6, 944-950
  •   Request permissions

    The boron-doped diamond electrode voltammetric method for ultra-trace determination of the fungicide pyraclostrobin and evaluation of its photodegradation and thermal degradation

    R. M. Dornellas, D. B. Nogueira and R. Q. Aucélio, Anal. Methods, 2014, 6, 944
    DOI: 10.1039/C3AY41786G

Search articles by author

Spotlight

Advertisements