Experimental polysaccharide chars and their 'fingerprints' in charred archaeological food residues

Autor:	Ivana Pastorova, Tania F.M. Oudemans, Jaap J. Boon
Rok vydání:	1993
Předmět:	chemistry.chemical_classification Polysaccharide Mass spectrometry Archaeology Analytical Chemistry Microcrystalline cellulose chemistry.chemical_compound Residue (chemistry) Fuel Technology chemistry Bulk samples Char Cellulose Pyrolysis
Zdroj:	Journal of Analytical and Applied Pyrolysis. 25:63-75
ISSN:	0165-2370
DOI:	10.1016/0165-2370(93)80033-v
Popis:	As a model for polysaccharide char formation in archaeological food residues, bulk samples of microcrystalline cellulose were charred under anoxic conditions at atmospheric pressure and at temperatures ranging from 190 to 310°C. The resulting chars were characterised by pyrolysis—mass spectrometry (Py—MS) and Curie-point pyrolysis—gas chromatography-mass spectrometry (Cu-Py—GC/MS). Although very few polysaccharide moieties were preserved in the experimental chars after heating above 270°C, a characteristic distribution of pyrolysis products representing the condensed char is shown. A selected charred archaeological food residue was analysed using the same analytical techniques. In this way, polysaccharide input can be detected in archaeological residues after approximately 1800 years of burial.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e09c73eeeb6f142dc8d8c71b0ae4fc48 https://doi.org/10.1016/0165-2370(93)80033-v Zobrazit plný text záznamu