In recent years, coupled or hyphenated techniques have become popular, and have been successfully applied to the solution of many analytical problems. HPLC-MS, tandem MS-MS, GC-FTIR, TLC-FID, GC-MS, etc. are but a few of the familiar abbreviations used for these one step, #x201C;double analysis#x201D; techniques. The coupling of thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR) is a good practical example (TG-FTIR) of such an instrumental approach for solving specific analytical problems. This hyphenated technique provides a quantitative assessment of the process via the TG curve (the thermogram), and an identification of the decomposition products from the IR spectra of the evolved gases.
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