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Highly sensitive electrochemical detection of trace liquid peroxide explosives at a Prussian-blue
Donglai Lu1, Avi Cagan, Rodrigo A A Munoz
1The Biodesign Institute and Departments of Chemical Engineering and Chemistry, Arizona State University, Tempe, AZ 85287-5801, USA.
Abstract:
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.
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