Akademik Veri Yönetim Sistemi
Microchemical Journal, cilt.212, 2025 (SCI-Expanded)
The development of accurate and sensitive detection systems is essential for assuring public safety and monitoring post-blast environmental contamination, given the powerful explosive features and negatory effects of aromatic nitro explosives on human health. In this study, a new trinitrotoluene (TNT)-memory molecular imprinted polymer (MIP) electrode was developed, involving the first-time use of melamine and chitosan (CS) materials in sensor electrode construction for the electrochemical detection of TNT. Additionally, composite materials were integrated to enhance the sensor's conductivity, stability, and electrocatalytic performance. The selectivity of the sensor electrode for the analyte (over other explosives) was provided by CH3-π interactions between TNT and poly-melamine. A thorough investigation was conducted with Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and differential pulse voltammetry (DPV) to examine the interaction between the functional monomers and the template molecule as well as the morphology, electrochemical properties, and detection efficiency of the sensor. Under optimal conditions, the linear concentration range for TNT was 40–500 µg L−1 with a detection limit of 25 µg L−1. Also, TNT was determined in the presence of different energetic substances, phenolic compounds, electroactive camouflage substances, as well as soil ions, and recovery values were between 91.9 % and 102.5 %. By electrochemically determining TNT in the structure of Octol and Composite B as actual explosive compounds, recovery values between 97.8 % and 100.8 %, respectively, were obtained. Finally, the developed assay method was validated against an LC/MS-MS literature method using statistical t- and F-tests.