Simultaneous identification and quantification of nitro-containing explosives by advanced chemometric data treatment of cyclic voltammetry at screen-printed electrodes.
Talanta
; 107: 270-6, 2013 Mar 30.
Article
en En
| MEDLINE
| ID: mdl-23598222
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 responses were obtained from a single bare screen-printed carbon electrode (SPCE), which exhibited marked mix-responses towards the compounds examined. The responses obtained were then preprocessed employing discrete wavelet transform (DWT) and the resulting coefficients were input to an artificial neural network (ANN) model. Subsequently, meaningful data was extracted from the complex voltammetric readings, achieving either the correct discrimination of the different commercial mixtures (100% of accuracy, sensitivity and specificity) or the individual quantification of each of the compounds under study (total NRMSE of 0.162 for the external test subset).
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Tetranitrato de Pentaeritritol
/
Triazinas
/
Trinitrotolueno
/
Carbono
/
Sustancias Explosivas
/
Técnicas Electroquímicas
Tipo de estudio:
Diagnostic_studies
/
Evaluation_studies
/
Qualitative_research
Idioma:
En
Revista:
Talanta
Año:
2013
Tipo del documento:
Article
País de afiliación:
Estados Unidos