Functional groups and common pyrolysate products of Odontopteris cantabrica (index fossil for the Cantabrian Substage, Carboniferous)

Zodrow, Erwin L.; D’Angelo, José A.; Helleur, Robert; Šimůnek, Zbyněk

doi:10.1016/j.coal.2012.06.002

Cited by 39 publications

(31 citation statements)

References 43 publications

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“…The infrared spectra of the coals can be primarily divided into four regions [19]: the peaks in the 3600-3000 cm À1 range, which are classified as hydroxy; the peaks in the 3000-2700 cm À1 range, corresponding to aliphatic compounds; the peaks in the 1800-1000 cm À1 range, belonging to functional and aromatic groups; and the peaks in the 900-700 cm À1 range, which are considered aromatic in the low-wave region as well as ash matter. Additional information on the assignments of the coal spectra are shown in [20][21][22]. Fig.…”

Section: Effect Of Upgrading On Coal Rankmentioning

confidence: 99%

Effects of microwave irradiation treatment on physicochemical characteristics of Chinese low-rank coals

Zhang

Wang

et al. 2013

Energy Conversion and Management

201

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Section: Effect Of Upgrading On Coal Rankmentioning

confidence: 99%

Effects of microwave irradiation treatment on physicochemical characteristics of Chinese low-rank coals

Zhang

Wang

et al. 2013

Energy Conversion and Management

201

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“…These semiquantitative data have previously been shown to provide chemotaxonomic insights (Zodrow et al . , , , , b ; Zodrow and Mastalerz , , ; D'Angelo ; D'Angelo et al . , , ; Zodrow ; D'Angelo and Zodrow ).…”

Section: Methodsmentioning

confidence: 99%

“…); and (2) calculation of area ratios (Mastalerz and Bustin ; D'Angelo, ; Zodrow and Mastalerz ; Zodrow et al . , , b ; D'Angelo et al . , , ).…”

Section: Methodsunclassified

“…; Guo and Bustin ; Zodrow et al . , , , , , b ; Zodrow and Mastalerz , , ; Marshall et al . ; Psěnička et al .…”

unclassified

“…These studies have contributed to the improvement of the analysis of functional groups through definition of semiquantitative ratios (Zodrow et al . , ; D'Angelo ). FTIR information, together with morphological characterizations, has been used to distinguish among different taxa (Psěnička et al .…”

mentioning

confidence: 99%

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Fourier transform infrared characterization of the Middle Devonian non‐vascular plant Spongiophyton

2016

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Spectroscopy information (functional groups and semiquantitative data) by Fourier transform infrared (FTIR) spectroscopy of Spongiophyton Kr€ ausel emend. Chaloner et al. is reported for the first time, in an attempt to identify spectroscopic patterns that would differentiate species of these taxa. A total of 33 specimens identified as S. lenticularis, S. nanum and S. minutissimum and preserved as compressions were analysed. They come from the same fossiliferous horizon of one outcrop situated in the uppermost Middle Devonian São Domingos Formation of the Paran a Basin in southern Brazil. The results reveal that functional groups in the 3000-2800 and 1800-700 cm À1wavenumber regions are present in all specimens. Infraredderived ratios (CH 2 /CH 3 , Al/Ox, Ox1/Ox2, C=O cont., C=C cont., Al2 and Ar/Al) and types of kerogen led to a comparison of the morphological characteristics of the studied material and indicate that compressions of S. lenticularis, S. nanum and S. minutissimum contain different organic compounds. S. nanum and S. minutissimum show higher oxidation and lower aromaticity of its organic matter than S. lenticularis. Additionally, S. lenticularis shows low A-factor values, suggesting a composition similar to type III kerogen, while S. nanum and S. minutissimum showed intermediate to high A-factor values, suggesting a composition similar to type II kerogen. In conclusion, the chemical-analytical techniques and statistical analysis (using PCA technique) reveal a closer taxonomic relationship between S. nanum and S. minutissimum than either has with S. lenticularis, supporting their taxonomic separation, previously proposed in the literature on the basis of morphological features. Lastly, the chemical signatures support the hypothesis that links these enigmatic fossils to a type of lichen or other early inland plant.

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Ginkgo leaf cuticle chemistry across changing pCO2 regimes

Jardine

Kent

Fraser

et al. 2019

PalZ

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Cuticles have been a key part of palaeobotanical research since the mid-19th Century. Recently, cuticular research has moved beyond morphological traits to incorporate the chemical signature of modern and fossil cuticles, with the aim of using this as a taxonomic and classification tool. For this approach to work cuticle chemistry would have to maintain a strong taxonomic signal, with a limited input from the ambient environment in which the plant grew. Here, we use attenuated total reflectance Fourier Transform infrared (ATR-FTIR) spectroscopy to analyse leaf cuticles from Ginkgo biloba plants grown in experimentally enhanced CO2 conditions, to test for the impact of changing CO2 regimes on cuticle chemistry. We find limited evidence for an impact of CO2 on the chemical signature of Ginkgo cuticles, which supports the use of chemotaxonomy for plant cuticular remains across geological timescales.

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Functional groups and common pyrolysate products of Odontopteris cantabrica (index fossil for the Cantabrian Substage, Carboniferous)

Cited by 39 publications

References 43 publications

Effects of microwave irradiation treatment on physicochemical characteristics of Chinese low-rank coals

Effects of microwave irradiation treatment on physicochemical characteristics of Chinese low-rank coals

Fourier transform infrared characterization of the Middle Devonian non‐vascular plant Spongiophyton

Ginkgo leaf cuticle chemistry across changing pCO2 regimes

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