Authors: Marini, A.¹; Berbenni, V.¹; Capsoni, D.¹; Riccardi, R.¹; Zerlia, T.²

Source: Applied Spectroscopy, Volume 48, Issue 12, Pages 1453-1564 (December 1994) , pp. 1468-1471(4)

Publisher: Society for Applied Spectroscopy

Abstract:

We discuss situations where thermogravimetric/Fourier transform infrared (TG/FT-IR) plots are obtained which differ substantially from the expected ones. The most common of these situations involves samples that release atmospheric components (H₂O, CO₂) at low temperatures. It is shown that the phenomena are mainly related to the purging action of the carrier gas, which strongly influences the spectroscopic portion of the TG/FT-IR plot. Such an influence, as well as the different situations originating from it, is discussed and explained on the basis of an analogy with the operational mode of a conventional dispersive spectrometer.

Keywords: TG/FT-IR; Carrier gas purging action; Spectroscopic-thermogravimetric matching

Document Type: Research article

DOI: http://dx.doi.org/10.1366/0003702944027822

Affiliations: 1: Dipartimento di Chimica Fisica, Università di Pavia, Viale Taramelli 16, 27100 Pavia, Italy 2: Stazione Sperimentale per i Combustibili, Via A. De Gasperi 3, 20097 San Donato Milanese, Italy

Publication date: 1994-12-01

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