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Fourier Transform Infrared Spectrometer Coupled with Electrothermal Atomizer for High-Temperature Vapor-Phase Investigations

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An electrothermal atomizer is employed to vaporize solid samples of pigments at temperatures ranging from 150°C to 1000°C. The evolution of vapors is followed by Fourier transform infrared spectrometry (FT-IR). The atomizer acts at the same time as vapor supplier and vapor holder. This coupling allows the investigation in situ of vaporization or pyrolysis phenomena avoiding the use of heated transfer pipes. The pigments examined in this study show various vapor-phase behaviors. Some pigments vaporize without appreciable decomposition at temperatures from 400°C to 950°C, while other pigments investigated decompose during the heating and originate pyrolysis products whose evolution is monitored continuously by the FT-IR spectrometer.

Keywords: Infrared; Techniques, vapor-phase

Document Type: Research Article


Affiliations: Stazione Sperimentale per i Combustibili, Viale Alcide De Gasperi, 3, 20097 San Donato Milanese MI, Italy

Publication date: September 1, 1984

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