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Thermal-decomposition Process Analysis of Sodium Formate Using TG-MS

Product: JMS-Q1500GC GC/MS System

Introduction

Thermogravimetry (TG) is used to measure weight changes of samples under programmed heat conditions. A system combining thermogravimetry/differential thermal analysis (TG/DTA) with mass spectrometry (MS) can be used for both qualitative and quantitative analysis of gases evolved from the TG furnace into the mass spectrometer. In this application note, we show qualitative analysis of the thermal-decomposition process for sodium formate using the “STA2500 Regulus” TG system (NETZSCH) and the gas chromatography–quadrupole mass spectrometry (GC/QMS) “JMS-Q1500GC” system (JEOL).

Experiment

A 20 mg sample of sodium formate was weighed with an electronic balance and measured by TG-MS. Table 1 shows the TG-MS measurement conditions. Ionization energy was set to 17 eV, which ionized hydrogen, but not the helium used as the atmospheric gas.

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