Hyphenated Techniques (Evolved Gas Analysis - EGA)

By coupling a Thermobalance (TG, TGA), Simultaneous Thermal Analyzer (STA, TGA-DSC) or Dilatometer (DIL) with a Quadrupole Mass Spectrometer (QMS), it is possible to detect and identify evolved gases in exact time correlation with TGA or STA signals.

The Combination with an FT-IR (Fourier Transform Infrared Spectrometer) has become an absolute must, especially in the polymer-producing, chemical and pharmaceutical industries.

The GC (gas chromatograph) separates gas mixtures based on the differences in component distribution between a stationary phase (e.g., inner coating of a capillary) and a mobile phase (e.g., He). The purge gas rapidly carries away gas components with a low affinity for the stationary phase. Gases with a high affinity for the stationary phase will follow with a significant time delay (“retention time”).

Measurement Results by Coupling

Decomposition

  • Dehydration
  • Stability
  • Residual solvent
  • Pyrolysis

Solid-Gas Reactions

  • Combustion
  • Oxidation
  • Adsorption
  • Desorption
  • Catalysis
  • Corrosion

Compositional Analysis

  • Polymer content
  • Proximate analysis
  • Binder burnout
  • Dewaxing
  • Ash content
  • Coal analysis

Identification

Evaporation

  • Vapor pressure
  • Sublimation

NETZSCH EGA Systems

TGA/STA - FT-IR Coupling

Different thermal analysis systems can be combined with a Fourier Transform Infrared Spectrometer (FT-IR), which has proved its efficiency especially in the organic field (instrument for EGA: evolved gas analysis).

STA 409 CD-QMS 403/5 SKIMMER - Coupling System

Highest detection sensitivity through direct coupling of the STA 409 CD with a quadrupole mass spectrometer (QMS) - evolved gas analysis (EGA) method.

PERSEUS® STA 449 F1/F3 Jupiter® – STA-FT-IR Coupling

The PERSEUS® STA 449 F1/F3 Jupiter® is an unmatched alliance between two successful instruments: the NETZSCH STA 449 F1/F3 Jupiter® and the FT-IR spectrometer by Bruker Optics. Its design is unprecedented and sets a benchmark for state-of-the-art coupling systems.

TGA/STA-GC-MS Coupling

NETZSCH, in collaboration with JAS (Joint Analytical Systems), has forged a breakthrough improvement in evolved gas analysis (EGA). What sets the new coupling system apart is the fact that the start of the measurement is event-driven. This enables temperature-correlated detection of the substances released, which in turn allows for direct correlation with mass loss steps.

PERSEUS® TG 209 F1 Libra® - TGA-FT-IR Coupling

The PERSEUS® TG 209 F1 Libra® is an unmatched alliance between the NETZSCH TG 209 F1 Libra® and a compact FT-IR spectrometer by Bruker Optics. Its design is unprecedented and sets a benchmark for state-of-the-art coupling systems.

QMS 403 Aëolos Quadro - Quadrupole Mass Spectrometer Coupling

The QMS 403 Aëolos Quadro is a very compact mass spectrometer with a heated capillary inlet system, specially designed for routine analysis of volatile decomposition products of thermal analysis (instrument for EGA: evolved gas analysis).