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The simultaneous determination of three nitro-containing compounds found in the majority of explosive mixtures, namely hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), 2,4,6-trinitrotoluene (TNT) and pentaerythritol tetranitrate (PETN), is demonstrated using both qualitative and quantitative approaches involving the coupling of electrochemical measurements and advanced chemometric data processing. Voltammetric...
An electrochemical flow system for on-line monitoring of trace 2,4,6-trinitrotoluene (TNT) in marine environments, based on a square-wave voltammetric operation at a carbon-fiber based detector, is described. The system offers selective measurements of sub-ppm concentrations of TNT in untreated seawater matrix (with a detection limit of 25ppb). It responds rapidly to sudden changes in the TNT concentration...
Screen-printed carbon electrodes have been developed as disposable voltammetric sensors for 2,4,6-trinitrotoluene (TNT). Thick-film electrodes based on various conventional and modified inks have been compared for this task. The operation is based on placing the selected thick-film carbon sensor in the non-deaerated/quiescent sample and using a fast (<1 s) and sensitive square-wave voltammetric...
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