GC × VUV Study of Diesel: A Two-Dimensional Separation Approach

Wang, Frank Cheng-Yu

doi:10.1021/acs.energyfuels.9b03383

Cited by 7 publications

(9 citation statements)

References 28 publications

(36 reference statements)

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“…In the GC × GC × VUV separation of complex hydrocarbon mixtures where coelution occurs within a certain polarity area of separation, selection of candidate molecules can rely on the elution times of standards, mass spectrometry, or other methods of selective detection. Without prior experience, the VUV spectra need to be examined and diagnostic absorption features identified . This approach is illustrated in Figure , where the elution region of the three-ring aromatic species is highlighted.…”

Section: Resultsmentioning

confidence: 99%

“…Without prior experience, the VUV spectra need to be examined and diagnostic absorption features identified. 27 This approach is illustrated in Figure 2, where the elution region of the three-ring aromatic species is highlighted.…”

Section: Resultsmentioning

confidence: 99%

“…The GC × GC instrument and GC-VUV instrument as well as experimental conditions have been described in a previous publication. 27 The gas chromatograph used in GC × GC is an Agilent 6890 gas chromatograph (Agilent Technology, Wilmington, DE, USA). The column set is the combination of a weakly polar column (BPX-5, 30 m, 0.25 mm i.d., 1.0 μm film) and a midpolarity column (BPX-50, 3 m, 0.10 mm i.d., 0.10 μm film) (both from SGE Analytical Science, Austin, TX, USA).…”

Section: Methodsmentioning

confidence: 99%

“…The GC × GC instrument and GC-VUV instrument as well as experimental conditions have been described in a previous publication . The gas chromatograph used in GC × GC is an Agilent 6890 gas chromatograph (Agilent Technology, Wilmington, DE, USA).…”

Section: Experimental Sectionmentioning

confidence: 99%

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Comprehensive Two-Dimensional Gas Chromatography Hyphenated with a Vacuum Ultraviolet Spectrometer To Analyze Diesel—A Three-Dimensional Separation (GC × GC × VUV) Approach

Wang

2020

Energy Fuels

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Effective separation of individual components continues to pose the greatest challenge in the characterization of complex hydrocarbon mixtures. Recent research has tackled this problem using several different multidimensional separation techniques such as coupling gas chromatography to a vacuum ultraviolet (VUV) spectrometer. Total absorption signals from the VUV spectrometer allow for general-purpose detection that is well suited for quantitative analysis. Full-range VUV spectra also can be collected that provide additional chemical information with absorption bands correlating to specific structural groups. When hyphenated with an advanced gas chromatography separation technique such as GC × GC, the full-range VUV spectrum can be used as a third dimension of separation. In this study, the three-dimensional technique, namely, comprehensive two-dimensional gas chromatography hyphenated with a vacuum ultraviolet spectrometer (GC × GC × VUV), is demonstrated using a diesel sample. The separation of various compounds that chromatographically coelute and the resolution of isomers that cannot be separated by mass spectrometry or any other analytical technique illustrate the power of this new analytical capability.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Experimental Sectionmentioning

confidence: 99%

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Comprehensive Two-Dimensional Gas Chromatography Hyphenated with a Vacuum Ultraviolet Spectrometer To Analyze Diesel—A Three-Dimensional Separation (GC × GC × VUV) Approach

Wang

2020

Energy Fuels

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“…A vacuum ultraviolet absorbance detector [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] is a concentration-sensitive detector for GC that obeys Beer-Lambert's law. As this detector features an additional flow of make-up gas which is introduced in the flow cell to decrease the diffusion of analytes, the evolution of signal height and area might sometimes not be in line with the classical behavior of a concentration-sensitive absorbance detector.…”

Section: Introductionmentioning

confidence: 99%

Make‐up gas influence on the signal behavior of the Vacuum ultraviolet detector for gas chromatography

Lelevic

Geantet

Lorentz

et al. 2022

Separation Science Plus

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A vacuum ultraviolet absorbance detector features the addition of the make‐up gas whose purpose is to decrease the diffusion of analytes in the flow cell. It has been previously demonstrated that the vacuum ultraviolet detector VGA 100 is a concentration‐sensitive detector for which the signal area is inversely proportional to the total flow in the flow cell. In this work, the signal behavior in the new generation vacuum ultraviolet detector, which features changed configuration for the introduction of make‐up gas, was explored. Contrary to previous instruments, a non‐linear relationship between the detector signal area and the inverse of the total flow in the flow cell (carrier gas flow + make‐up gas flow) was observed. To explain these observations, we have investigated the behavior of the detector in combination with one‐dimensional and two‐dimensional gas chromatography. Based on the results obtained, it was concluded that in these next‐generation instruments, flow in the flow cell cannot be regarded as a simple sum of the gas chromatography column flow and the total make‐up flow. After making modifications to the estimation of the total effective flow in the flow cell, a linear relationship between the signal area and the inverse of the flow in the flow cell was recovered.

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Gas chromatography—vacuum ultraviolet spectroscopy in petroleum and fuel analysis

Kaplitz

Schug

2023

Analytical Science Advances

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In the modern world, energy and fuels are of utmost importance. Rapid characterization of petroleum and other hydrocarbon‐based fuel is a well‐researched field. Gas chromatography has traditionally been used to separate the different species and characterize the chemical content in fuels. Ideally, every molecule would be separated and characterized, but due to the complexity of the petroleum matrix, many compounds coelute. With the help of different detectors, more information can be gained, but there does not exist a single detector that can unambiguously differentiate and identify every compound. Vacuum ultraviolet spectroscopy (VUV) is a relatively new detector that can alleviate many limitations of other detectors. Based on spectroscopic absorption, VUV detection can provide qualitative and quantitative information regarding the composition of different fuels. It also provides certain advantages, allowing the deconvolution of coeluting peaks and differentiation between constitutional isomers. VUV has been used to classify the range of chemical components in many diverse fuel samples. Here, the contributions of VUV detection to petrochemical analysis to date are reviewed.

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GC × VUV Study of Diesel: A Two-Dimensional Separation Approach

Cited by 7 publications

References 28 publications

Comprehensive Two-Dimensional Gas Chromatography Hyphenated with a Vacuum Ultraviolet Spectrometer To Analyze Diesel—A Three-Dimensional Separation (GC × GC × VUV) Approach

Comprehensive Two-Dimensional Gas Chromatography Hyphenated with a Vacuum Ultraviolet Spectrometer To Analyze Diesel—A Three-Dimensional Separation (GC × GC × VUV) Approach

Make‐up gas influence on the signal behavior of the Vacuum ultraviolet detector for gas chromatography

Gas chromatography—vacuum ultraviolet spectroscopy in petroleum and fuel analysis

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