Study of crystal transformations by an evolved gas analysis technique

1973 ◽  
Vol 5 (4) ◽  
pp. 483-497 ◽  
Author(s):  
P. D. Garn ◽  
R. L. Tucker
Keyword(s):  
Evolved Gas Analysis ◽  
Gas Analysis ◽  
Evolved Gas ◽  
Analysis Technique

Thermal Volatilisation Analysis – The Development of a Novel Technique for the Analysis of Conservation Artifacts

2007 ◽  
Vol 1047 ◽  
Author(s):  
James Pawel Lewicki ◽  
Deborah Todd ◽  
Perrine Redon ◽  
John Liggat ◽  
Lorraine Gibson
Keyword(s):  
Gas Phase ◽  
Environmental History ◽  
Evolved Gas Analysis ◽  
Gas Analysis ◽  
Formaldehyde Resin ◽  
Volatile Species ◽  
Evolved Gas ◽  
Analysis Technique ◽  
History Of ◽  
Metallic Artifacts

AbstractReported here is the development of a novel evolved gas analysis technique; Sub-Ambient Thermal Volatilization Analysis (SATVA) and its application in characterizing key analyte species from conservation artifacts. In this work SATVA has been applied to the study of volatiles evolution processes occurring in number of model conservation artifacts. The evolution of volatile species from cured formaldehyde resin, leather and metallic artifacts has been studied by SATVA. The specific analytes making up the total quantity of evolved material in each case have been separated and identified using sub-ambient differential distillation and a combination of online mass spectrometry, gas phase IR spectroscopy and GC-MS. The data gathered has been used to provide information on both the degradation processes occurring within the artifacts and the environmental history of the artifacts themselves.

scholarly journals Application of Evolved Gas Analysis Technique for Speciation of Minor Minerals in Clays

Minerals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 824
Author(s):  
Eulalia Zumaquero Silvero ◽  
Jessica Gilabert Albiol ◽  
Eva María Díaz-Canales ◽  
María Jesús Ventura Vaquer ◽  
María Pilar Gómez-Tena
Keyword(s):  
Infrared Spectroscopy ◽  
Evolved Gas Analysis ◽  
Industrial Process ◽  
Gas Analysis ◽  
X Ray Diffraction ◽  
Mineralogical Characterization ◽  
Evolved Gas ◽  
Analysis Technique

Mineralogical characterization of clays used in manufacturing of traditional ceramic products is critical for guarantee the quality of the final product, but also for assessing the environmental impact of the industrial process in terms of atmospheric emissions. In fact, the presence of impurities even in low-level concentrations can have a big impact. So, it is very important to carry out an accurate mineral quantification of those minerals which are related to carbon dioxide and acid emissions (hydrogen fluoride, hydrogen chloride or sulfur dioxide). The development of hyphenated techniques coupling thermal analysis equipment with mass spectrometry and Fourier-transform infrared spectroscopy provides more valuable information and lower limit quantification than other primary techniques, such as X-ray diffraction or infrared spectroscopy. The main objective of this work is to develop an analytical procedure using evolved gas analysis to identify and quantify minerals such as chlorides, sulfides, carbonaceous materials and minor clay minerals. In addition to this, the study includes the analysis of acid emissions during the ceramic firing treatment even if they are present at low quantitative levels. This methodology was applied to reference materials so that it allows the identification of sulfur, chlorine, fluorine and carbonaceous compounds in concentrations lower than 1%.

Evolved Gas Analysis by Infrared Spectroscopy

2010 ◽  
Vol 45 (4) ◽  
pp. 241-273 ◽  
Author(s):  
S. Materazzi ◽  
S. Vecchio
Keyword(s):  
Infrared Spectroscopy ◽  
Evolved Gas Analysis ◽  
Gas Analysis ◽  
Evolved Gas
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