Suppression of pigment interference in the gas chromatographic analysis of proteinaceous binding media in paintings with EDTA

2004 ◽  
Vol 1025 (2) ◽  
pp. 277-285 ◽  
Author(s):  
J de la Cruz-Cañizares ◽  
M.T Doménech-Carbó ◽  
J.V Gimeno-Adelantado ◽  
R Mateo-Castro ◽  
F Bosch-Reig
Keyword(s):  
Chromatographic Analysis ◽  
Binding Media ◽  
Gas Chromatographic Analysis ◽  
Proteinaceous Binding Media

Study of binding media in works of art by gas chromatographic analysis of amino acids and fatty acids derivatized with ethyl chloroformate

1997 ◽  
Vol 778 (1-2) ◽  
pp. 373-381 ◽  
Author(s):  
R. Mateo Castro ◽  
M.T. Dome´nech Carbo´ ◽  
V. Peris Marti´nez ◽  
J.V. Gimeno Adelantado ◽  
F. Bosch Reig
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Chromatographic Analysis ◽  
Ethyl Chloroformate ◽  
Binding Media ◽  
Gas Chromatographic Analysis ◽  
Works Of Art

The mechanism of formation of 2,7-dimethyl-2,6-octadiene in the synthesis of 3-methylene-7-methyl-1,6-octadiene

1983 ◽  
Vol 48 (7) ◽  
pp. 1864-1866
Author(s):  
Jan Bartoň ◽  
Ivan Kmínek
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Alkali Metal ◽  
Chromatographic Analysis ◽  
Solid Phase ◽  
Reaction Pathway ◽  
Mechanism Of Formation ◽  
Gas Chromatographic Analysis ◽  
C Nmr ◽  
Visual Observations

2,7-Dimethyl-2,6-octadiene is formed in the catalytic solution for the dimerization of 2-methyl-1,3-butadiene to β-myrcene (3-methylene-7-methyl-1,6-octadiene), as revealed by mass spectrometry and 13C NMR spectroscopy. Visual observations together with the results of gas chromatographic analysis of the catalytic solution suggest that the formation of 2,7-dimethyl-2,6-octadiene is associated with the transition of the alkali metal (sodium) from the solid phase into the solution. A reaction pathway is suggested accounting for the formation of 2,7-dimethyl-2,6-octadiene in the system.

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