Ion trap and quadrupole mass spectra of lignin pyrolysates: How well do they compare?

Galletti, Guido C.; Reeves, James B.; Francis, Barry A.; Reeves, Valerie B

doi:10.1002/rcm.1290070717

Cited by 6 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mass spectra were obtained by electron impact at 70 eV from 40 to 400 m/z (1 scan/s). Peak identification was based on mass spectral interpretation and on published libraries of mass spectra of lignocellulose pyrolyzates (Galletti and Bocchini, 1995;Galletti et al, 1993;Ralph and Hatfield, 1991). Peak areas were expressed as percentages from the total ion current (TIC) chromatogram.…”

Section: Sample Preparationmentioning

confidence: 99%

Compositional Differentiation of Maize Hybrid Stovers Using Analytical Pyrolysis and High-Performance Liquid Chromatography

Galletti

Reeves

Bocchini

et al. 1997

J. Agric. Food Chem.

Self Cite

View full text Add to dashboard Cite

Pyrolysis/gas chromatography/mass spectrometry (PY/GC/MS) and high-performance liquid chromatography with electrochemical detection (HPLC-ED) were carried out on stover samples from ten commercial maize hybrids grown in northern Italy. The objective was to check whether the composition of the cell wall lignin and polysaccharides, as obtained by PY/GC/MS, and the phenolic acid content, as determined by HPLC-ED, were significantly different in the various hybrids. Neutral detergent fiber (NDF) and crude protein content were also determined. Thirty pyrolysis fragments were identified mainly deriving from polysaccharides and lignin. Vanillic, p-coumaric, and ferulic acids were quantified by HPLC-ED. Analysis of variance and the Waller-Duncan test showed significant differences in all the examined parameters. Correlations were also found among NDF, PY/GC/MS lignin markers, p-coumaric, and ferulic acids and among vanillic acid, p-coumaric acid, and PY/GC/MS lignin markers.

show abstract

Section: Sample Preparationmentioning

confidence: 99%

Compositional Differentiation of Maize Hybrid Stovers Using Analytical Pyrolysis and High-Performance Liquid Chromatography

Galletti

Reeves

Bocchini

et al. 1997

J. Agric. Food Chem.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Despite the small number of components of this group, their relative contribution was large, and ranged from 5.7 to 14.7% in FOR soils, from 7.5 to 17.9% in AGR soils and from 2.4 to 5.8% in PAL soils. These components were attributed to proteins (Galletti et al , 1993) and to lignins and cellulose (Stuczynski et al , 1997). The fact that the phenolic and the lignin‐derived components were both present in greater amounts in the actual topsoils (AGR and FOR soils), where the input of fresh material is larger, than in the buried (PAL) soils, where the input was nil, indicates that these two groups can be regarded as part of the primary organic matter of soil and that these components are not greatly resistant to degradation.…”

mentioning

confidence: 99%

NaOH‐extractable organic matter of andic soils from Galicia (NW Spain) under different land use regimes: a pyrolysis GC/MS study

Verde¹,

Buurman²,

Cortizas³

et al. 2008

European J Soil Science

View full text Add to dashboard Cite

The objective of this study was to determine to what extent the attenuation or loss of andic soil properties caused by land use change -from forest (FOR, average C content 118.2 AE 23.7 g kg À1 ) to agricultural land (AGR, average C content 55.7 AE 16.7 g kg À1 ) use -is reflected in soil organic matter (SOM) at the molecular level. For this, NaOH-extractable SOM of A horizons from 17 soils developed on amphibolitic parent material in NW Spain was studied by pyrolysis gas chromatography spectrometry (Py-GC/MS). We also included two buried andic A horizons (PAL, 2200 cal yr BP in age) on the same parent material, as a reference for the molecular composition of SOM from soils without recent litter additions. Organic matter of PAL soils had a composition largely different from that of superficial soils (FOR and AGR), with an important relative contribution of microbial polysaccharides and Ncompounds, and an absence of compounds that characterize fresh plant litter (e.g. lignins). In the superficial soils, the relative contribution of lignin-derived compounds was greater in AGR than in FOR soils. Differences were also observed in the relative contribution of aliphatic compounds, FOR soils being enriched in this type of components compared with AGR soils. The results indicated that land use change from FOR to AGR, which was accompanied by a decrease in total SOM, resulted in an enrichment in primary SOM. The smaller relative abundance of primary SOM derivatives in andic FOR soils indicates that these compounds were quickly degraded in Andisols.

show abstract

Pyrolysis/gas chromatography/mass spectrometry and Fourier‐transform infrared spectroscopy of amber

Galletti

Mazzeo

1993

Rapid Comm Mass Spectrometry

View full text Add to dashboard Cite

Amber samples from archaeological objects belonging to the collection of the Museo Civico Archeologico of Bologna were analysed by pyrolysislgas chromatography/(ion-trap) mass spectrometry (PY/GC/MS) and Fourier-transform infrared spectroscopy (FTIR) to assess the geographic origin of the fossil resin. Both techniques showed potential in the study of amber, because they require small sample amounts, virtually no sample preparation and provide a fingerprint which is highly diagnostic of the material under investigation. Typical pyrograms, mass spectra and FTIR spectra are shown and compared to those obtained from standard amber of known geographical origin. The usefulness of composite mass spectra, namely mass spectra obtained by summing all or part of the mass spectra acquired within the pyrogram, to create a library of PYIGCIMS data and to compare samples is evaluated.

show abstract

Ion trap and quadrupole mass spectra of lignin pyrolysates: How well do they compare?

Cited by 6 publications

References 14 publications

Compositional Differentiation of Maize Hybrid Stovers Using Analytical Pyrolysis and High-Performance Liquid Chromatography

Compositional Differentiation of Maize Hybrid Stovers Using Analytical Pyrolysis and High-Performance Liquid Chromatography

NaOH‐extractable organic matter of andic soils from Galicia (NW Spain) under different land use regimes: a pyrolysis GC/MS study

Pyrolysis/gas chromatography/mass spectrometry and Fourier‐transform infrared spectroscopy of amber

Contact Info

Product

Resources

About