Couplings / Evolved Gas Analysis
Thermogravimetry (TG) or Thermogravimetric Analysis (TGA) measure the mass loss or gain of a sample of material as a function of time or temperature when it is heated or cooled under a certain temperature profile. Simultaneous thermal analysis (TG-DTA or TG-DSC) additionally allows qualifying or quantifying the corresponding heat effects.
The contribution of hyphenated techniques, also known as Evolved Gas Analysis (EGA) have proved particularly interesting for the investigation of the chemistry of a reaction or thermal decomposition owing to the identification of the evolved species.
Mass spectrometry identifies the evolved molecules after their ionization based on the m/z ratio of the main ions and their fragments. Coupling can be achieved thanks to the heated capillary or supersonic methods.
– Features: best limit of detection, fast transfer time
– Benefits: applicable to small mass variations, easy to setup, detection of heavy molecules (with Supersonic System)
Chemical functions of the evolved molecules are identified according to their specific absorption of IR light wavelengths.
– Features: Chemical function specific signals
– Benefits: Applicable to the detection of families of substances in complex gas blends evolved from decomposition of organic samples
TG-GC/MS is becoming increasingly popular, as gas chromatography allows a first separation of the evolved species, before their identification by the mass spectrometer.
– Features: Best gaseous molecules separation and identification
– Benefits: Applicable to the identification of substances in complex gas blends evolved from decomposition of organic samples
Large volume & high temperature TGA/STA-EGA (ambient to 2000°C) This is an extremely high performance weighing module used with the TGA 96. This balance can weigh samples up to 100 g and is well suited to measuring both micro-quantities of samples (a few milligrams) as well as large, dense samples while maintaining measurement resolution to […]
High-performance simultaneous TGA & DTA / DSC (ambient / 2400°C) with Evolved Gas Analysis The HIGHLIGHTS SETSYS Evolution is the standard for high performance TGA, TG-DSC and TG-DTA application. It is based on a complete modular thermal analysis platform for – TGA, DTA and DSC – Simultaneous TGA/DTA and TGA/DSC – The key to […]
An innovative line of Thermal Analyzers (-120 / 830°C) with 3D-Inside technology: TG-DSC-EGA The HIGHLIGHTS Thermogravimetry Excellent TG signal baseline: the symmetry of the microbalance, with its sample and reference suspended vertically from the beam guarantee reproducible positioning of the sample over time and excellent stability of the TG signal baseline. Automatic compensation of […]
TGA-EGA and Simultaneous STA-EGA, from ambient to 1150°C or 1600°C THE HIGHLIGHTS Simplicity of use: thanks to both an ergonomic design and the dedicated market leading Calisto software, LABSYS evo is user friendly and intuitive to operate – LABSYS evo offers a “Plug & play” gas analyzer coupling device,enabling simultaneous MS, FTIR or GC/MS connections. […]