Analysis of emitted gases

Objective of the analysis

Analyzing the gases emitted by a sample allows for the identification and quantification of volatile compounds released by a solid or liquid subjected to a specific temperature or environment. It is applicable to phenomena such as thermal degradation , evaporation, residual emissions, and chemical reactions.

This analysis is essential for:

• Evaluate the composition of gaseous emissions from a material, ingredient, or finished product
• Controlling air quality in confined environments
• Check the thermal stability or the degassing kinetics
• Meeting regulatory, environmental or safety requirements

Methodology

The sample is placed in a suitable chamber (tubular furnace, microchamber, etc.) and subjected to a controlled sweeping gas (air, nitrogen, helium, etc.). The gas carries away the emitted volatile compounds, which are then analyzed:

• In global mode : a single sample collected over the duration of the analysis
• In kinetic mode : regular sampling to monitor the evolution of emissions as a function of time or temperature

The influencing parameters (temperature, ramps, isotherms, gas flow rate) are fully customizable according to the desired emission profile.

Associated analytical techniques

• Gas chromatography (GC)
• GC-MS (coupled with mass spectrometry)
• Infrared (IR) spectroscopy
• Collection in bags for delayed analysis

Examples of applications

• Degassing of polymer materials, textiles, coatings, waxes
• Emissions of solvents or residues in cosmetic or industrial formulations
• Volatile compounds resulting from the degradation of biomass or essential oils
• Study of the thermal stability of complex formulations
• Simulation of storage or usage conditions

Need for direct identification in a pure gas?

Also check out our service: Gas Analysis

At YesWeLab, we connect you with expert laboratories in gas analysis and thermal degradation , rigorously selected for their equipment (GC-MS, microchambers, coupled thermal analysis) and their accreditations (ISO 17025, COFRAC).

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