scope:

Purpose.

This test procedure is used for the qualitative and quantitative determination of Volatile Organic Compound (VOC) and Semi-Volatile Organic Compound (SVOC) emissions in vehicle interior air utilizing Tenax TA adsorbent media and Thermal Desorption - Gas Chromatography/Mass Selective Detection (TD-GC/ MSD).

Individual VOC and SVOC emissions in different vehicle interior air samples can be identified, quantified, and compared.

In combination with GMW15634 the sources of VOCs and SVOCs in vehicle air can be identified.

"Total VOC" emissions are defined as compounds in the chromatographic elution range from the beginning of the chromatogram to the end of n-eicosane (n-C20). Note that if the Total Volatile Organic Compound (TVOC) definition is different per a regional protocol then this TVOC definition must be used if required. "Total SVOC" or "FOG" are emissions that condense on a vehicle surface, e.g., glass, plastic lens, etc., at ambient temperature, and are defined as compounds in the chromatographic elution range from the beginning of n-hexadecane (n-C16) to the end of n-dotriacontane (n-C32).