GB/T 39897-2021 in English
VALIDDetermination of volatile organic compounds and aldehydes and ketones in nonmetallic parts of vehicles
- Issued on:2021-03-09
- Implemented on:2021-10-01
- File Format:PDF
- Delivery:Via email within 5 business days
Price(USD)：
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《GB/T 39897-2021车内非金属部件挥发性有机物和醛酮类物质检测方法》由TC114（全国汽车标准化技术委员会）归口，TC114SC6（全国汽车标准化技术委员会非金属制品分会）执行，主管部门为工业和信息化部。
Introduction
Analysis of the core content of the standard
GB/T39897-2021 has established a dual-system detection framework for the non-metallic parts of the passenger compartment and luggage compartment of M1/N1 vehicles:
| Detection objects | Sampling methods | Analysis techniques | Key indicators |
|---|---|---|---|
| Volatile organic compounds (VOCs) | Bag method/box method | Thermal desorption-gas chromatography/mass spectrometry | Benzene series, total hydrocarbons |
| Aldehydes and ketones | Bag method/box method | DNPH adsorption-HPLC | 12 substances including formaldehyde and acetaldehyde |
Technological breakthroughs and innovations
1. Optimization of sampling methods
The standard innovatively adopts a dual-mode sampling system:
- Bag method: 65℃ constant temperature accelerated release, suitable for large assemblies (such as seats, dashboards)
- Box method: 1m³ standard test box, precise control of temperature and humidity (65℃±1℃, 5%RH) and air exchange rate (0.4m³/h)
2. Analytical technology upgrade
Compared with traditional methods, this standard significantly improves detection sensitivity:
| Parameters | VOCs Detection | Aldehydes and Ketones Detection |
|---|---|---|
| Detection Limit | 0.01μg/m³(Tenax tube) | 0.15μg/tube(DNPH tube) |
| Precision | RSD≤20% | RSD≤10% |
Key Points for Implementation of the Standard
Sample Management Specifications
Special attention should be paid:
- Samples in the delivery state need to be sealed with aluminum foil/odorless PE film
- Avoid strong light exposure during transportation, and control the ambient temperature at 23℃±5℃
- After receiving the laboratory, it needs to be balanced for 24-48 hours
Quality control requirements
A strict quality control system is established according to the standard:
- Blank sample control: toluene ≤20μg/m³, formaldehyde ≤20μg/m³
- Parallel sample deviation: VOCs detection relative deviation ≤20%
- System calibration: single level calibration is required for every 10 samples
Industry application suggestions
Auto parts companies
The following high-risk materials should be monitored:
- Polyurethane foam (seats, ceilings)
- PVC leather (steering wheels, door panels)
- Asphalt damping pads (floor materials)
Capacity building of testing institutions
Key equipment to be configured:
- Gas chromatography-mass spectrometry: requires cold trap focusing device
- High performance liquid chromatography: C18 chromatographic column, UV detector
- 1m³ environmental chamber: temperature control accuracy ±1℃
Sample only — not a preview of GB/T 39897-2021
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