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dc.contributor.authorSAĞLAM, ŞENER
dc.contributor.authorAPAK, MUSTAFA REŞAT
dc.contributor.authorARDA, AYŞEM
dc.contributor.authorArman, Aysu
dc.date.accessioned2022-02-18T10:36:50Z
dc.date.available2022-02-18T10:36:50Z
dc.identifier.citationArman A., SAĞLAM Ş., ARDA A., APAK M. R. , "Electrochemical determination of nitroaromatic explosives using glassy carbon/multi walled carbon nanotube/polyethyleneimine electrode coated with gold nanoparticles", TALANTA, cilt.238, 2022
dc.identifier.issn0039-9140
dc.identifier.othervv_1032021
dc.identifier.otherav_acaa4ad4-8f02-4785-866f-fb975b10b1be
dc.identifier.urihttp://hdl.handle.net/20.500.12627/179573
dc.identifier.urihttps://doi.org/10.1016/j.talanta.2021.122990
dc.description.abstractThe on site/in field detection of explosives has become a rising priority for homeland security and counter-terrorism measures. This work presents the sensitive detection of nitroaromatic explosives using glassy carbon/ multi-walled carbon nanotubes/polyethyleneimine (GC/MWCNTs/PEI) electrode coated with gold nanoparticles (AuNPs). MWCNTs and PEI could be well dispersed in ethanol/water solution, giving rise to a thin and homogeneous film on GCE. The GC/MWCNTs/PEI electrode was electrochemically modified with AuNPs and used for the differential pulse voltammetric (DPV) detection of nitroaromatics. The enhanced detection sensitivities were achieved through 7C-7C and charge-transfer (CT) interactions between the electron-deficient nitroaromatic explosives and donor amine groups in PEI to which gold nanoparticles were linked, providing increased analyte affinity toward the modified GCE. Calibration curves of current intensity versus concentration were linear in the range of 0.05-8 mg L-1 for TNT, 0.2-4 mg L-1 for 2,4-dinitrotoluene (DNT), 1-20 mg L-1 for 2,4-dinitrophenol (2,4-DNP), 0.25-10 mg L-1 for picric acid (PA), and 0.05-4 mg L-1 for 2,4,6-trinitrophenyl-N-methylnitramine (tetryl) with detection limits (LOD) of 15 mu g L-1, 45 mu g L-1, 135 mu g L-1, 30 mu g L-1, and 12 mu g L-1, respectively. The proposed method was successfully applied to the analysis of nitroaromatics in synthetic explosive mixtures and military composite explosives (comp B and octol). The electrochemical method was not affected by possible interferents of electroactive camouflage materials and common soil ions. Method validation was performed against the reference LC-MS method on TNT and PA-contaminated clay soil samples separately.
dc.language.isoeng
dc.subjectChemistry (miscellaneous)
dc.subjectGeneral Chemistry
dc.subjectPhysical Sciences
dc.subjectAnalytical Chemistry
dc.subjectFiltration and Separation
dc.subjectTemel Bilimler
dc.subjectAnalitik Kimya
dc.subjectTemel Bilimler (SCI)
dc.subjectKimya
dc.subjectKİMYA, ANALİTİK
dc.titleElectrochemical determination of nitroaromatic explosives using glassy carbon/multi walled carbon nanotube/polyethyleneimine electrode coated with gold nanoparticles
dc.typeMakale
dc.relation.journalTALANTA
dc.contributor.departmentİstanbul Üniversitesi-Cerrahpaşa , ,
dc.identifier.volume238
dc.contributor.firstauthorID3050317


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