A systematic study of the absorbance of the nitro functional group in the vacuum UV region

Cruse, Courtney A.; Goodpaster, John V.

doi:10.1016/j.aca.2021.339042

Cited by 8 publications

(5 citation statements)

References 40 publications

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“…It can be seen that an absorption peak appears at 197 nm, which is attributed to the π–π* transition of the nitro group. 52 The signal intensity of this peak decreases significantly after the addition of Ni 2+ , which would be caused by the coordination of the oxygen atom in the nitro group with Ni 2+ .…”

Section: Resultsmentioning

confidence: 95%

A cross-linkable phthalonitrile derivative as a precursor to synthesize nitrogen-doped carbon nanodots for Ni ion detection

Fan,

Ran,

et al. 2023

New J. Chem.

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Section: Resultsmentioning

confidence: 95%

A cross-linkable phthalonitrile derivative as a precursor to synthesize nitrogen-doped carbon nanodots for Ni ion detection

Fan,

Ran,

et al. 2023

New J. Chem.

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“…A PC template, which can be used in place of a GCxGC template, was created using PCs. Several recent papers have applied PCA to VUV spectra (Santos et al, 2018;Roberson and Goodpaster, 2019;Roberson et al, 2020;Tanen et al, 2020;Cruse and Goodpaster, 2021); however, this paper represents the first application of PCA to fuel templating to the best of the authors' knowledge.…”

Section: Introductionmentioning

confidence: 99%

Quantitation of olefins in sustainable aviation fuel intermediates using principal component analysis coupled with vacuum ultraviolet spectroscopy

Kosir,

Feldhausen,

Bell

et al. 2023

Front. Fuels

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Olefins, a common intermediate from biomass conversion processes, are undesirable in jet fuel because of their poor thermal stability. This paper presents an approach for olefin quantitation using 2D gas chromatography coupled with vacuum ultraviolet spectroscopy. Principal component analysis was used to reduce the dimensionality of the spectroscopic data from a highly olefinic fuel intermediate. A principal component template was created that enabled olefin quantitation, which was compared to the existing GCxGC-VUV approach from the literature. The principal component method was able to identify and quantify trace amounts of cyclodienes, which were present at only 0.01 wt% in the fuel sample. The principal component approach also identifies species that fall outside of the GCxGC template. For instance, quantitation with the literature method resulted in an olefin concentration of 0.95 times that of the principal component method due to olefins falling outside of the expected GCxGC regions. The principal component results were compared with 13C and 1H NMR data, which confirmed that the fuel had a high concentration of olefins and alkanes with little aromatic content.

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“…VUV spectra are specific to each analyte, making this tool useful to observe the isomeric, isobaric, and co-eluting compounds that are not easily identified by MS. Since its availability as a benchtop spectrometer, GC/VUV has been used for a variety of applications including fuels [23][24][25][26], food/ fragrance products [27][28][29], environmental [30][31][32], and forensic samples [22,[33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

“…GC/VUV has been used to study the thermal degradation of nitrate ester and nitramine explosives [22,44,46,47] and an optimized method for explosives analysis with application to post-blast debris has been reported [45]. Cruse et al have also identified SP organic additives in both unburned SP [22] and real post-blast debris [45] and added the subsequent spectra to the VUV spectral library.…”

Section: Introductionmentioning

confidence: 99%

Quantitative analysis of smokeless powder particles in post‐blast debris via gas chromatography/vacuum ultraviolet spectroscopy (GC/VUV)

Reavis

Goodpaster

2022

Journal of Forensic Sciences

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Forensic analysis of smokeless powder particles recovered from the debris of an improvised explosive device can provide information about the type of smokeless powder used and can aid investigation efforts. In this study, quantitative methods were used to yield information about the difference in the chemical composition of the particles pre‐ and post‐blast. The technique, gas chromatography/vacuum ultraviolet spectroscopy (GC/VUV), was able to quantify nitroglycerin, 2,4‐dinitrotoluene, diphenylamine, ethyl centralite, and di‐n‐butyl phthalate in pre‐ and post‐blast smokeless powder particles using heptadecane as an internal standard. Post‐blast debris was obtained via controlled explosions with assistance from the Indiana State Police Bomb Squad. Two galvanized steel and two polyvinyl chloride pipe bombs were assembled. Two devices contained single‐base smokeless powder and two contained double‐base smokeless powder. 2,4‐dinitrotoluene and diphenylamine were successfully quantified in the single‐base smokeless powder post‐blast debris while nitroglycerin, diphenylamine, and ethyl centralite were successfully quantified in the double‐base smokeless powder post‐blast debris. Compounds were detected at concentrations as low as 9 μg of 2,4‐dinitrotoluene per mg, <3 μg of diphenylamine per mg, 131 μg of nitroglycerin per mg, and <3 μg of ethyl centralite per mg. Concentration changes between pre‐ and post‐blast smokeless powder particles were determined as well as microscopic differences between pre‐ and post‐blast debris for both smokeless powders in all devices. To our knowledge, this is the first use of GC/VUV for the quantification of explosives.

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A systematic study of the absorbance of the nitro functional group in the vacuum UV region

Cited by 8 publications

References 40 publications

A cross-linkable phthalonitrile derivative as a precursor to synthesize nitrogen-doped carbon nanodots for Ni ion detection

A cross-linkable phthalonitrile derivative as a precursor to synthesize nitrogen-doped carbon nanodots for Ni ion detection

Quantitation of olefins in sustainable aviation fuel intermediates using principal component analysis coupled with vacuum ultraviolet spectroscopy

Quantitative analysis of smokeless powder particles in post‐blast debris via gas chromatography/vacuum ultraviolet spectroscopy (GC/VUV)

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