IGA Webinar

Instrumental Gas Analysis (IGA) measures gas-forming elements (C, H, O, N and S) present in solid materials from ppm to percentage levels. A high temperature furnace is used to rapidly or temperature-stepped heat the sample and thereby convert certain elements into volatile forms in order to separate, detect, and measure them.

Carbon and sulfur are measured as CO₂ and SO₂ based on combustion and infrared detection during instrumental gas analysis. Nitrogen, oxygen and hydrogen are measured using inert gas fusion or solid carrier gas heat extraction as N₂, CO/CO₂ and H₂ respectively. For metals and alloys, our analysis is based on well-established ASTM standard testing procedures, and provide high precision and high accuracy measurement of bulk concentration in materials. For other advanced materials, EAG’s method development and validation is rooted in its strength in the materials science and analytical chemistry, including in-depth understanding of the solid-solid reaction, combustion kinetics, flux design expertise, and the bonding chemistry of H, C, N, O and S in materials, to achieve high precision and accuracy of measurement. EAG also extends its analysis beyond bulk measurement, by implementing stepped temperature heating of samples (or fractional analysis) and by cross-checking with other analytical techniques in house; therefore, providing our clients critical information about H embrittlement issues, surface and bulk oxygen content in powders, free carbon in carbides, etc.