Academic literature on the topic 'GC/VUV'

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Journal articles on the topic "GC/VUV"

1

Hodgson, Alex, and Jack Cochran. "Vacuum Ultraviolet Spectroscopy as a New Tool for GC Analysis of Terpenes in Flavors and Fragrances." Journal of AOAC INTERNATIONAL 102, no. 2 (March 1, 2019): 655–58. http://dx.doi.org/10.5740/jaoacint.18-0284.

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Abstract Background: Traditional detectors such as flame ionization detection and MS have issues with coeluting isomers like terpenes; however, unique vacuum UV (VUV) absorbance spectra can be used to deliberately compress chromatography. Objective: Deconvolution capabilities under various run conditions of GC-MS and GC-VUV arecompared. Methods: A standard terpenes mix and tea tree essential oil were run on both GC-MS (63 and 14 min run times) and GC-VUV (22, 11, and 7 min run times). Results: The three GC-VUV methods showed good precision for10 terpenes, as well as with the 63 min GC-MS method. The 14 min GC-MS method struggled precisely quantifying some terpenes. Highlights: GC-VUV allows for faster run times while providing the same level of quantitative accuracy.
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2

Cruse, Courtney A., Jingzhi Pu, and John V. Goodpaster. "Identifying Thermal Decomposition Products of Nitrate Ester Explosives Using Gas Chromatography–Vacuum Ultraviolet Spectroscopy: An Experimental and Computational Study." Applied Spectroscopy 74, no. 12 (October 8, 2020): 1486–95. http://dx.doi.org/10.1177/0003702820915506.

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Analysis of nitrate ester explosives (e.g., nitroglycerine) using gas chromatography–vacuum ultraviolet spectroscopy (GC–VUV) results in their thermal decomposition into nitric oxide, water, carbon monoxide, oxygen, and formaldehyde. These decomposition products exhibit highly structured spectra in the VUV that is not seen in larger molecules. Computational analysis using time-dependent density functional theory (TDDFT) was utilized to investigate the excited states and vibronic transitions of these decomposition products. The experimental and computational results are compared with those in previous literature using synchrotron spectroscopy, electron energy loss spectroscopy (EELS), photoabsorption spectroscopy, and other computational excited state methods. It was determined that a benchtop GC–VUV detector gives comparable results to those previously reported, and TDDFT could predict vibronic spacing and model molecular orbital diagrams.
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3

Wang, Frank Cheng-Yu. "GC × VUV Study of Diesel: A Two-Dimensional Separation Approach." Energy & Fuels 34, no. 2 (February 4, 2020): 1432–37. http://dx.doi.org/10.1021/acs.energyfuels.9b03383.

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4

Abou Mrad, Ninette, Fabrice Duvernay, Thierry Chiavassa, and Grégoire Danger. "Methanol ice VUV photoprocessing: GC-MS analysis of volatile organic compounds." Monthly Notices of the Royal Astronomical Society 458, no. 2 (February 15, 2016): 1234–41. http://dx.doi.org/10.1093/mnras/stw346.

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5

Bai, Ling, Jonathan Smuts, Jamie Schenk, Jack Cochran, and Kevin A. Schug. "Comparison of GC-VUV, GC-FID, and comprehensive two-dimensional GC–MS for the characterization of weathered and unweathered diesel fuels." Fuel 214 (February 2018): 521–27. http://dx.doi.org/10.1016/j.fuel.2017.11.053.

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6

Roberson, Zackery R., and John V. Goodpaster. "Differentiation of structurally similar phenethylamines via gas chromatography–vacuum ultraviolet spectroscopy (GC–VUV)." Forensic Chemistry 15 (August 2019): 100172. http://dx.doi.org/10.1016/j.forc.2019.100172.

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7

Roberson, Zackery R., Heather C. Gordon, and John V. Goodpaster. "Instrumental and chemometric analysis of opiates via gas chromatography–vacuum ultraviolet spectrophotometry (GC-VUV)." Analytical and Bioanalytical Chemistry 412, no. 5 (January 3, 2020): 1123–28. http://dx.doi.org/10.1007/s00216-019-02337-5.

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8

Dunkle, Melissa N., Pascal Pijcke, William L. Winniford, Matthijs Ruitenbeek, and George Bellos. "Method development and evaluation of pyrolysis oils from mixed waste plastic by GC-VUV." Journal of Chromatography A 1637 (January 2021): 461837. http://dx.doi.org/10.1016/j.chroma.2020.461837.

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9

Wang, Frank Cheng-Yu. "Comprehensive Two-Dimensional Gas Chromatography Hyphenated with a Vacuum Ultraviolet Spectrometer To Analyze Diesel—A Three-Dimensional Separation (GC × GC × VUV) Approach." Energy & Fuels 34, no. 7 (June 24, 2020): 8012–17. http://dx.doi.org/10.1021/acs.energyfuels.0c00688.

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10

Dunkle, Melissa N., Pascal Pijcke, Bill Winniford, and George Bellos. "Quantification of the composition of liquid hydrocarbon streams: Comparing the GC-VUV to DHA and GCxGC." Journal of Chromatography A 1587 (February 2019): 239–46. http://dx.doi.org/10.1016/j.chroma.2018.12.026.

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