Electrochemical detection of triacetone triperoxide employing the electrocatalytic reaction of iron(II/III)-ethylenediaminetetraacetate and hydrogen peroxide
2008; Elsevier BV; Volume: 608; Issue: 1 Linguagem: Inglês
10.1016/j.aca.2007.12.003
ISSN1873-4324
AutoresDerek F. Laine, Christopher W. Roske, I. Francis Cheng,
Tópico(s)Electrochemical Analysis and Applications
ResumoAn electrochemical method for the detection of triacetone triperoxide (TATP) is proposed and examined. In this method, TATP solutions were treated with 1.08 M HCl for 10 min releasing H2O2 and/or hydroperoxides. Subsequently, these peroxides undergo an electrocatalytic reduction through the FeII/IIIethylenediaminetetraacetate (EDTA) complex at a glassy carbon electrode. Cyclic voltammetric results indicate that no redox reaction was observed between FeIIEDTA and TATP. Acid treated TATP yielded voltammograms indicative of electrocatalysis of ROOH/HOOH reduction via FeII/IIIEDTA redox cycling. Chronoamperometric results yielded a detection limit of 0.89 μM for TATP and a sensitivity of 0.025 mA mM−1. The influence of pH and O2 interference on the analytical signal is briefly discussed.
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