VDI/DIN-Commission on Air Pollution Prevention (KRdL) - Standards Committee
Interior air of road vehicles - Part 1: Whole vehicle test chamber - Specification and method for the determination of volatile organic compounds in cabin interiors
This part of ISO 12219 describes and specifies the whole vehicle test chamber, the vapour sampling assembly and the operating conditions each for the determination of volatile organic compounds (VOCs), and carbonyls in vehicle cabin air. There are three measurements performed; one (for VOCs and carbonyls) during the simulation of ambient conditions (ambient mode) at standard conditions of 23 °C with no air exchange, a second only for the measurement of formaldehyde at elevated temperatures (parking mode), and a third for VOCs and carbonyls simulating driving after the vehicle has been parked in the sun starting at elevated temperatures (driving mode). For the simulation of the mean sun irradiation in Europe, Asia, North-America etc. a fixed irradiation in the whole vehicle test chamber is employed. The VOC method is valid for measurement of non-polar and slightly polar VOCs in a concentration range of sub-µg/m3 up to several mg/m3. The sampling and analysis procedure for formaldehyde and other carbonyl compounds is performed by collecting air onto cartridges coated with 2,4-dinitrophenylhydrazine (DNPH) and subsequent analysis by high performance liquid chromatography (HPLC) with detection by ultraviolet absorption. Formaldehyde and other carbonyl compounds can be determined in the concentration range of approximately 1 µg/m3 to 1 mg/m3. The method is valid for new and used passenger cars. This part of ISO 12219 describes: - transport and storage of the test vehicles until the start of the test, - conditioning for the surroundings of the test vehicle and the test vehicle itself as well as the whole vehicle test chamber, - conditioning of the test vehicle prior to measurements, - simulation of ambient air conditions (ambient mode), - formaldehyde sampling at elevated temperatures (parking mode), - simulation of driving after the test vehicle has been parked in the sun (driving mode).
Planned document number
DIN ISO 12219-1