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|Title:||Toward the electrochemical detection of 2,4-dinitroanisole (DNAN) and pentaerythritol tetranitrate (PETN)|
|Authors:||Glasscott, Matthew W.|
Jernberg, Johanna N.
Moores, Lee C.
|Keywords:||Explosives, Military--Environmental aspects|
|Publisher:||Engineer Research and Development Center (U.S.)|
|Series/Report no.:||Technical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/EL TR-22-3|
|Abstract:||Analytical methods to rapidly detect explosive compounds with high precision are paramount for applications ranging from national security to environmental remediation. This report demonstrates two proof-of-concept electroanalytical methods for the quantification of 2,4-dinitroanisol (DNAN) and pentaerythritol tetranitrate (PETN). For the first time, DNAN reduction was analyzed and compared at a bare graphitic carbon electrode, a polyaniline-modified (PANI) electrode, and a molecularly imprinted polymer (MIP) electrode utilizing PANI to explore the effect of surface-area and preconcentration affinity on the analytical response. Since some explosive compounds such as PETN are not appreciably soluble in water (<10 μg/L), necessitating a different solvent system to permit direct detection via electrochemical reduction. A 1,2-dichloroethane system was explored as a possibility by generating a liquid-liquid extraction-based sensor exploiting the immiscibility of 1,2-dichloroethane and water. The reduction process was explored using a scan rate analysis to extract a diffusion coefficient of 6.67 x 10⁻⁶ cm/s, in agreement with literature values for similarly structured nitrate esters. Once further refined, these techniques may be extended to other explosives and combined with portable electrochemical hardware to bring real-time chemical information to soldiers and citizens alike.|
|Gov't Doc #:||ERDC/EL TR-22-3|
|Rights:||Approved for Public Release; Distribution is Unlimited|
|Appears in Collections:||Technical Report|