Highly sensitive electrochemical detection of trace liquid peroxide explosives at a Prussian-blue 'artificial-peroxidase' modified electrode.
A highly sensitive electrochemical assay of the peroxide-based explosives triacetone triperoxide (TATP) and hexamethylene triperoxide diamine (HMTD) at a Prussian-blue (PB) modified electrode is reported. The method involves photochemical degradation of the peroxide explosives and a low potential (0.0 V) electrocatalytic amperometric sensing of the generated hydrogen peroxide at the PB transducer and offers nanomolar detection limits following a short (15 s) irradiation times. The electrochemical sensing protocol should facilitate rapid field screening of peroxide explosives.
Lu
Donglai
D
The Biodesign Institute and Departments of Chemical Engineering and Chemistry, Arizona State University, Tempe, AZ 85287-5801, USA.
Cagan
Avi
A
Munoz
Rodrigo A A
RA
Tangkuaram
Tanin
T
Wang
Joseph
J
D019086:Bridged Bicyclo Compounds, Heterocyclic / Q000032:analysis; D002244:Carbon; D004563:Electrochemistry; D004566:Electrodes; D053834:Explosive Agents / Q000032:analysis*; D005295:Ferrocyanides; D006573:Heterocyclic Compounds, 1-Ring / Q000032:analysis; D006861:Hydrogen Peroxide / Q000032:analysis*; D010545:Peroxides / Q000032:analysis; D010984:Platinum
D019086:Bridged Bicyclo Compounds, Heterocyclic; D053834:Explosive Agents; D005295:Ferrocyanides; D006573:Heterocyclic Compounds, 1-Ring; D010545:Peroxides; C058103:hexamethylenetriperoxidediamine; D010984:Platinum; C495284:triacetone triperoxide; D002244:Carbon; D006861:Hydrogen Peroxide; C000170:ferric ferrocyanide