ISO 12219-10:2021 Interior air of road vehicles —Part 10: Whole vehicle test chamber — Specification and methods for the determination of volatile organic compounds in cabin interiors — Trucks and buses

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Interior air of road vehicles —Part 10: Whole vehicle test chamber — Specification and methods for the determination of volatile organic compounds in cabin interiors — Trucks and buses是国际标准化组织(International Organization for Standardization，简称ISO)于2021-06发布的ISO标准，适用于全球。

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Interior air of road vehicles —

Part 10: Whole vehicle test chamber — Specification and methods for the determination of volatile organic compounds in cabin interiors — Trucks and buses

1 Scope

This document describes and specifies the whole vehicle test chamber, the vapour sampling assembly and the operating conditions for the determination of volatile organic compounds (VOCs; for more information see Annex E), and carbonyl compounds in vehicle cabin air. There are three measurements performed: one (for VOCs and carbonyl compounds) 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 carbonyl compounds 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, 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-micrograms per cubic metre up to several milligrams per cubic metre. Using the principles described in this method, some semi-volatile organic compounds (SVOC) can also be analysed. ®1)

Compatible compounds are those which can be trapped and released from the Tenax TA sorbent tubes described in ISO 16000-6, which includes VOCs ranging in volatility from n-C6 to n-C16.

The sampling and analysis procedure for formaldehyde and other carbonyl compounds is performed by collecting air on to 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 approximate concentration 3 3

range 1 μg/m to 1 mg/m .

This method applicable to trucks and buses, as defined in ISO 3833:1977 3.1.1 to 3.1.6.

This document describes:

a) Transport and storage of the test vehicle until the start of the test.

b) Conditioning of the surroundings of the test vehicle and the test vehicle itself as well as the whole vehicle test chamber.

c) Conditioning of the test vehicle prior to measurements.

d) Simulation of ambient air conditions (ambient mode).

e) Formaldehyde sampling at elevated temperatures (parking mode).

f) Simulation of driving after the test vehicle has been parked in the sun (driving mode).

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1) Tenax TA is the trade name of a product supplied by Buchem. This information is given for the convenience of users of this document and does not constitute an endorsement by ISO of the product named. Equivalent products may be used if they can be shown to lead to the same results.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 12219-1, Interior air of road vehicles — Part 1: Whole vehicle test chamber — Specification and method for the determination of volatile organic compounds

ISO 16000-3, Indoor air — Part 3: Determination of formaldehyde and other carbonyl compounds in indoor air and test chamber air — Active sampling method

ISO 16000-6, Indoor Air — Part 6: Determination of volatile organic compounds in indoor and test chamber ®

air by active sampling on Tenax TA sorbent, thermal desorption and gas chromatography using MS or MS-

FID

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso. org/ obp

— IEC Electropedia: available at http:// www .electropedia .org/ 3.1

background concentration

analyte concentration in the whole vehicle test chamber, when the vehicle is inside

3.2

test vehicle

new vehicle to be tested

Note 1 to entry: The test vehicle used can be of any type specified in ISO 3833:1977, 3.1.2 to 3.1.6.

Note 2 to entry: See also 3.5

3.3

total volatile organic compounds (TVOC)

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sum of volatile organic compounds sampled on Tenax TA and eluting between and including n-hexane and n-hexadecane, detected with a flame ionization detector (TVOC ) or mass spectrometric detector FID

(TVOC ) and quantified converting the total area of the chromatogram in that analytical window to MS

toluene equivalents

3.4

carbonyl compound

compound containing the functional group -C(=O)- determined according to ISO 16000-3

3.5

ambient mode

mode in which sampling of VOCs and carbonyl compounds in the cabin of a test vehicle under standardized ambient temperature conditions is performed, defined as 23 °C

Note 1 to entry: Engine off, radiators off, trucks and buses sampling time 30 min.

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