Premium
Characterization of melanins by pyrolysis/gas chromatography/mass spectrometry
Author(s) -
Vas György,
Vékey Károly,
Czira Gábor,
Tamás József,
Favretto Donata,
Traldi Piero,
Bertazzo Antonella,
Costa Carlo,
Allegri Graziella
Publication year - 1993
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290071003
Subject(s) - chemistry , pyrolysis , mass spectrometry , resistive touchscreen , gas chromatography , curie temperature , characterization (materials science) , chromatography , pyrolysis–gas chromatography–mass spectrometry , nitrogen , analytical chemistry (journal) , organic chemistry , nanotechnology , materials science , quantum mechanics , ferromagnetism , electrical engineering , engineering , physics
Various natural and synthetic melanins were studied by the pyrolysis/gas chromatography/mass spectrometry technique, using both resistive and Curie‐point heating. The results obtained by the two pyrolysis procedures are different and complementary. By means of Curie‐point pyrolysis, at long times and high temperatures low molecular weight gases are produced from various melanins; the yields of the common pyrolysis products are also dependent on the melanin under study. By resistive heating, higher molecular weight compounds are produced, mainly nitrogen and oxygen heterocyclic systems, and differences are still evident among the products from the different melanins.