Laser microprobe mass analysis studies on coal and shale samples

Vanderborgh, N.E.; Jones, C. E.

doi:10.1021/ac00254a025

Cited by 22 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has also been possible to detect carbazoles in polyethelyene [143] and triphenyl arsenic in polyvinyl butarate [144]. A study conducted with LAMMA previously [145] describes the laser desorption processes and illustrates the methodology for peak assignments. The coal _'5", macromolecular system shows major peaks at (B + X,) in both the positive and negative ion spectra, where B represents the hydrocarbon nucleus and X represents _groups typically H, OH, O, CN, and CO. _.$ Both the positive and negative spectra show a characteristic pattern of peaks that concentrate around multiples of 12.…”

Section: Lammamentioning

confidence: 99%

Flotation and flocculation chemistry of coal and oxidized coals

Somasundaran¹,

Ramesh²

1989

View full text Add to dashboard Cite

Section: Lammamentioning

confidence: 99%

Flotation and flocculation chemistry of coal and oxidized coals

Somasundaran¹,

Ramesh²

1989

View full text Add to dashboard Cite

“…Molecular information on organic fossils in samples such as coals [1][2][3][4], source rocks [5][6][7], kerogen [8][9][10][11][12][13][14]; oil shales [4,15,16], and synthetic organic polymers [17,18] had been successfully afforded by LmPy-GC/MSMS among existing pyrolysis technique, proving to be an excellent way to characterize the chemical composition of heterogeneous materials.…”

Section: Introductionmentioning

confidence: 99%

Using LmPy-GC/MSMS to Molecular Characterization of Organic Components in Heterogeneous Mixtures: Instrumental Development

Graciano Mendonça Filho,

del Valle Franco Rondón,

Guilherme Costa dos Santos

et al. 2024

From Biomass to Biobased Products

View full text Add to dashboard Cite

Pyrolysis techniques use thermal energy to degrade large molecules into smaller and volatile molecules, which can be analyzed by gas chromatography to determine the composition or structure of the initial sample. A laser system coupled to a GC/MSMS, for analysis of these species, gave rise to the technique called Laser MicroPyrolysis-GC/MSMS (LmPy-GC/MSMS). The laser micropyrolyzer is a hyphenated system with a laser source, an optical microscope, and a GC/MSMS technique. In this hyphenated technique, a collimated, short-duration laser beam with a large amount of energy can be focused on isolated components, or a macromolecule inside a heterogeneous matrix, promoting the thermal cleavage and producing smaller components, which are finally analyzed and characterized by GC/MSMS. The LmPy-GC/MSMS has been proven to be able to supply important molecular data on organic fossils, coals, source rocks, etc., improving the knowledge and the understanding of the compositions and opening a horizon in the study of several heterogeneous materials.

show abstract

“…Joy (1968), Wolf (1983), Dutta and Talmi (1982), Gaines and Page (1983), Vanderborgh and Roland (1983), Martin (1986), Lyons (1989, Hou et al (1995) and Jin (1997) have made significant attempts at this study. At first, this new technology was mainly used to study the electric materials and polymers; then since the middle 1 9 6 0~~ it has been applied to the surface study of coals and source rocks because of its characteristics of directly analyzing the solid surface.…”

Section: Introductionmentioning

confidence: 99%

“…At first, this new technology was mainly used to study the electric materials and polymers; then since the middle 1 9 6 0~~ it has been applied to the surface study of coals and source rocks because of its characteristics of directly analyzing the solid surface. Joy (1968), Wolf (1983), Dutta and Talmi (1982), Gaines and Page (1983), Vanderborgh and Roland (1983), Martin (1986), Lyons (1989), Hou et al (1995) and Jin (1997) have made significant attempts at this study. However, most of their experiments were done on instruments with a relative low resolution, and there exists a problem in distinguishing inorganic and organic fragment ion peaks in the process of mass spectrum analysis.…”

Section: Introductionmentioning

confidence: 99%

TOF‐SIMS Study of the Hydrocarbon‐generating Potential of Mineral‐Bituminous Groundmass

Dai

Yang

Zhang

et al. 2000

Acta Geologica Sinica (Eng)

View full text Add to dashboard Cite

The TOF-SIMS fragment peak ascription of organic and inorganic ions of mineral-bituminous groundmass of Jurassic source rocks in the Turpan-Hami and Junggar basins was studied by using the high-resolution Time of Flight Secondary Ion Mass Spectrometer (TOF-SIMS). The characteristics of spectrum distribution and constitution of fragment ions of the mineral-bituminous groundmass are discussed; then the methods of evaluating its hydrocarbon-generating potential are developed. In addition, the typical parameters, X , , , Y , and Z,,, for indicating the hydrocarbon-generating potential of mineral-bituminous and other organic matter in source rocks are put forward to reflect the aliphatic, oxygenous, and aromatic structures. It is confirmed by Rock-Eva1 that these parameters are significant in evaluating hydrocarbon generation. Moreover, the detection of the nitrogenous and oxygenous fragment ion, CH,NO,', in the mudstone formed in semi-deep lakes and in the carbargilite formed in the arms of lakes reflects the fact that microbes take an active part in biologic degradation.

show abstract

Laser microprobe mass analysis studies on coal and shale samples

Cited by 22 publications

References 25 publications

Flotation and flocculation chemistry of coal and oxidized coals

Flotation and flocculation chemistry of coal and oxidized coals

Using LmPy-GC/MSMS to Molecular Characterization of Organic Components in Heterogeneous Mixtures: Instrumental Development

TOF‐SIMS Study of the Hydrocarbon‐generating Potential of Mineral‐Bituminous Groundmass

Contact Info

Product

Resources

About