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DIN ISO 12219-4

Interior air of road vehicles - Part 4: Method for the determination of the emissions of volatile organic compounds from vehicle interior parts and materials - Small chamber method (ISO 12219-4:2013)

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German title

Innenraumluft von Straßenfahrzeugen - Teil 4: Verfahren für die Bestimmung von flüchtigen organischen Verbindungen aus Fahrzeuginnenraumausstattungsteilen - Kleinprüfkammer-Verfahren (ISO 12219-4:2013)

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Engl. VDI/DIN-Kommission Reinhaltung der Luft (KRdL) - Normenausschuss
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This part of ISO 12219 describes a qualitative and quantitative analytical method for vapour-phase volatile organic compounds (VOC) released from car trim materials under simulated real use conditions using small emission test chambers (small chamber) (reference method). Small chambers are intended to provide a transfer function to vehicle level emissions. This method is intended for evaluating new car interior trim components but can, in principle, be applied to used car components. Target compounds include VOCs (in the volatility range from n-hexane to n-hexadecane) n-hexane to n-hexadecane) and volatile carbonyls such as formaldehyde. Compounds more volatile can also be analyzed. This part of ISO 12219 provides third party test laboratories and manufacturing industry with an approach for: - identifying the effect of real use conditions on specific VOC emissions data, - comparing emissions from various assemblies with regards to specific VOC emissions, - evaluating and sorting specific assemblies regarding specific VOC emissions data, - providing specific VOC emissions data to develop and verify a correlation between material level methods and the vehicle level method, - evaluating prototype, "low-emission" assemblies during development. An automotive interior product is inserted into an almost ideally mixed small chamber (0,5 m3 to 4,0 m3) and stored in pre-set temperature, humidity and air change. Organic substances that escape the component accumulate in the small chamber and are conveyed through an air stream. Air samples are taken at selected times. Out of these the concentration of gaseous air substances in the small chamber can be determined qualitatively and quantitatively with the help of chemical analysis procedures. The specified analytical procedure is valid for the determination of volatile organic compounds (VOCs) ranging in concentration from sub-g/m3 to several mg/m3. The method is applicable to the measurement of non-polar and slightly polar VOCs ranging in volatility from n-C6 to n-C16.

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