Electrochemical detection of triacetone triperoxide employing the electrocatalytic reaction of iron(II/III)-ethylenediaminetetraacetate and hydrogen peroxide.
An 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 10min releasing H2O2 and/or hydroperoxides. Subsequently, these peroxides undergo an electrocatalytic reduction through the Fe(II/III)ethylenediaminetetraacetate (EDTA) complex at a glassy carbon electrode. Cyclic voltammetric results indicate that no redox reaction was observed between Fe(II)EDTA and TATP. Acid treated TATP yielded voltammograms indicative of electrocatalysis of ROOH/HOOH reduction via Fe(II/III)EDTA redox cycling. Chronoamperometric results yielded a detection limit of 0.89 microM for TATP and a sensitivity of 0.025 mAmM(-1). The influence of pH and O2 interference on the analytical signal is briefly discussed.
Laine
Derek F
DF
Department of Chemistry, University of Idaho, Moscow, ID 83844-2343, USA.
Roske
Christopher W
CW
Cheng
I Francis
IF
D000085:Acetates / Q000737:chemistry*; D002384:Catalysis; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D004492:Edetic Acid / Q000737:chemistry*; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D004867:Equipment Design; D006573:Heterocyclic Compounds, 1-Ring / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007501:Iron / Q000737:chemistry*; D008956:Models, Chemical; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D010545:Peroxides / Q000737:chemistry*; D012680:Sensitivity and Specificity
D000085:Acetates; D006573:Heterocyclic Compounds, 1-Ring; D010545:Peroxides; C495284:triacetone triperoxide; D004492:Edetic Acid; D006861:Hydrogen Peroxide; D007501:Iron; D010100:Oxygen