GB/T 37840-2019Determination of volatile organic compounds in electrical and electronic products—Gas chromatography-mass spectrometry method (English PDF)
电子电气产品中挥发性有机化合物的测定 气相色谱-质谱法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
August 30, 2019
Implementation date
March 1, 2020
Scope
GB/T 37840-2019 is the English-translated version of 电子电气产品中挥发性有机化合物的测定 气相色谱-质谱法.
GB/T 37840-2019 is the Chinese standard "Determination of volatile organic compounds in electrical and electronic products—Gas chromatography-mass spectrometry method".
Its scope clause reads: This standard specifies a small release test chamber for volatile organic compounds in electrical and electronic products - gas chromatography-mass spectrometry (GC-MS) test method.
This standard applies to the determination of volatile organic compounds in electrical and electronic products. Its clauses include terms and definitions; principle.
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Document preview — GB/T 37840-2019
National Standard of the People's Republic of China
- ICS
- 59.080.01
- Classification
- W 04
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Terms and definitions
- 2.1 Volatile organic compounds volatileorganiccompounds; VOC
- 2.2 Total volatile organic compound total volatileorganiccompound; TVOC
- 2.3 Air exchange rate
- 2.4 Air flow rate airvelocity
- 2.5 Release test chamber smalchamber
- 2.6 Bearing rate loading factor
- 3 Principle
1 Scope
This standard specifies a small release test chamber for volatile organic compounds in electrical and electronic products - gas chromatography-mass spectrometry (GC-MS) test method.
This standard applies to the determination of volatile organic compounds in electrical and electronic products.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1 Volatile organic compounds volatileorganiccompounds; VOC
Sampling with 2,6 diphenylfuran porous polymer resin (Tenax-TA), using a gas chromatographic column with a polarity index of less than 10
An organic compound having a retention time between n-hexane and n-hexadecane.
2.2 Total volatile organic compound total volatileorganiccompound; TVOC
Using Tenax-TA sampling, analysis was performed using a gas chromatographic column with a polarity index of less than 10, retention times in n-hexane and positive sixteen
The sum of all organic compounds between the alkane.
[GB/T 18883-2002, definition 3.2]
2.3 Air exchange rate
The ratio of the volume of fresh air released in the test chamber to the volume of the empty release box per unit time.
Note. The unit is hourly (h-1).
2.4 Air flow rate airvelocity
Release the air flow rate measured in the test chamber.
2.5 Release test chamber smalchamber
It consists of a cabin, an air circulation device, an air exchange device, an air purification device, a temperature and relative humidity control device, and a monitoring device.
Test equipment with controlled operating parameters for simulating the release environment of volatile organic compounds.
2.6 Bearing rate loading factor
The ratio of the volume of the test sample to the volume of the released test chamber.
3 Principle
The electrical and electronic products are placed in the release test chamber of certain conditions (temperature, humidity and air flow rate), and the volatilization of electronic and electrical products is released.
The organic organic compound (VOC) is mixed with the air entering the release test chamber and discharged from the release test chamber outlet. The adsorption tube is used to release the test chamber.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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