ISO 12219-11:2025 PDF

Overview

ISO 12219-11:2025 - Interior air of road vehicles, Part 11 - specifies a laboratory thermal desorption analysis method for characterizing organic emissions from non‑metallic materials used in motor vehicle interiors (textiles, carpets, adhesives, leather, plastics, films, paints, etc.). The method thermally extracts emissions from representative specimens, separates compounds by gas chromatography (GC) and identifies/detects them by mass spectrometry (MS) to provide semiquantitative sum values for volatile organic compounds (VOC value) and low‑volatile “fogging” compounds (FOG value), plus identification of individual substances.

Key SEO keywords: ISO 12219-11:2025, thermal desorption, interior air, VOC, FOG, gas chromatography, mass spectrometry, Tenax TA.

Key topics and technical requirements

• Scope and limitations
  • Evaluates outgassing from moulded non‑metallic parts under the specific test conditions in the document.
  • Results are not appropriate for estimating health effects or predicting in‑vehicle concentrations during driving or stationary conditions.
• Analytical approach
  • Thermal extraction of samples (VOC measurement example: heating at 90 °C for 30 min), TD → GC separation → MS detection.
  • Two semiquantitative sum values: VOC (toluene equivalent; detects up to n‑Pentacosane C25) and FOG (hexadecane equivalent; n‑alkanes C14–C32).
• Equipment and consumables
  • Directly coupled thermal desorption / GC system with a focusing device (cryofocusing/cold trap), MSD, inert desorption tubes (4–5 mm ID; Tenax TA recommended), fused‑silica capillary GC column (5% phenyl‑methyl‑siloxane, 30–60 m, 0.25–0.32 mm ID, phase 0.25–0.52 µm).
• Performance criteria
  • Check standard recoveries: 60–140% for single substances (VOC conditions); toluene recovery 80–120%.
  • Detection limits examples (95% CI): VOC run toluene