Recent applications in analytical thermochemolysis

Molecular composition of plant parts and sediment organic matter in a Mediterranean seagrass (Posidonia oceanica) mat

“…Here we will focus on analytical pyrolysis techniques, i.e. conventional analytical pyrolysis (PY-GC-MS) and Thermally assisted Hydrolysis and Methylation (THM-GC-MS), the latter of which uses a derivatization agent simultaneously to thermal treatment to enhance the structural information obtained for polar aliphatic and phenolic materials (Wampler 1999;Challinor 2001;Shadkami and Helleur 2010). Only Gadel and Bruchet (1987) and Klap et al (2000) studied Posidonia oceanica materials by PY-GC-MS, but they analyzed specific (and unquantified) fractions of humic/fulvic fractions and milled-wood-lignin preparations, respectively.…”

Quality control of sweet medicines based on gas chromatography-mass spectrometry

“…Pyrolysis-gas chromatography (Py-GC) has been well established as a simple, quick and reliable analytical technique for a range of applications including the analysis of polymeric materials (98,99). The most important application of Py-GC in carbohydrates analysis is characterization of cellulose, hemicellulose and plant gum (100)(101)(102)(103).…”

“…The derivative reagent including TMCS (103), BSTFA (103,104) and HMDS (105,106) are most commonly used. Recently, on-line analysis of thermally assisted hydrolysis and methylation (THM) gas chromatography commonly used tetramethylammonium hydroxide (TMAH) (107)(108)(109) as base reagents, made the analysis simpler and faster (99). Pyrolysis GC-MS as a novel analysis technique to determine the biochemical composition including carbohydrate has been applied for microalgae.…”

The analysis of European lacquer: optimization of thermochemolysis temperature of natural resins

“…For these small samples of diverse constitution, thermochemolysis gas chromatography-mass spectrometry, also called thermally assisted hydrolysis and methylation gas chromatography-mass spectrometry (THM-GC/MS), was chosen as principle technique, efficiently returning a maximum of information on the different ingredients with the use of only very limited sample amount. Thermochemolysis-GC/MS is today one of the most important techniques to analyze resinous materials in general [7][8][9][10][11][12][13][14][15][16][17][18][19], and it is a powerful method to analyze European lacquer as well [20,21].…”