Development of a gold nanoparticles-based colorimetric sensor for the indirect determination of ammonium dinitramide and tetryl
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Dosyalar
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier B.V.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Ammonium dinitramide (ADN) is a strong, environmentally friendly oxidizer used in composite solid rocket propellants. As there is no reliable colorimetric sensor for ADN assay applicable to in-field screening, we developed a sensitive and practical sensing method to determine it in the presence of other explosives and possible interferents, based on the detection of nitrite formed from ADN degradation under UV light in a slightly alkaline (i.e. of lower alkalinity than needed to hydrolyze nitramines) solution by a nanoparticle-based colorimetric sensor. The ADN-derived nitrite formed a colored product via a Griess reaction using gold nanoparticles modified with 4–aminothiophenol (4-ATP-AuNPs) along with a coupling reagent N-(1-naphthyl)ethylene diamine (NED) for forming an azo dye. The method used for ADN detection could also be applied to tetryl samples at a different wavelength. The limit of detection (LOD) was 0.012 mg L?1 for ADN and 0.615 mg L?1 for tetryl. Interference effects of energetic materials like trinitrotoluene (TNT), hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) and pentaerythritol tetranitrate (PETN) to ADN determination could be overcome. In addition, common soil ions did not adversely affect the nanosensor performance. The developed method was statistically validated against reference voltammetric, UV, and HPLC methods using t- and F- tests. © 2021 Elsevier B.V.
Açıklama
Anahtar Kelimeler
Ammonium dinitramide detection, Explosives, Gold nanoparticles, Nitrite sensor, Propellants, Tetryl detection, Amines, Azo dyes, Chemical reactions, Color, Colorimetry, Composite propellants, Ethylene, Explosives detection, Fiber optic sensors, HMX, Metal nanoparticles, Rockets, Ammonium dinitramide, Colorimetric sensors, Coupling reagents, Hexahydro-1 ,3 ,5-trinitro-1 ,3 ,5-triazine, In-field screenings, Interference effects, Limit of detection, Pentaerythritol tetranitrate, Gold nanoparticles
Kaynak
Talanta
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
226
