GB/T 23992-2009Determination of chlorhydrocarbon content in coatings - Gas chromatographic method (English PDF)
涂料中氯代烃含量的测定 气相色谱法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
June 2, 2009
Implementation date
February 1, 2010
Scope
GB/T 23992-2009 is the English-translated version of 涂料中氯代烃含量的测定 气相色谱法.
GB/T 23992-2009 is the Chinese standard "Determination of chlorhydrocarbon content in coatings - Gas chromatographic method". Its scope clause reads: This standard specifies the determination coatings chlorinated hydrocarbon content by gas chromatography method.
These include chlorinated hydrocarbons. dichloromethane, dichloroethane Dioxane, chloroform, trichloroethane, carbon tetrachloride and other types of chlorinated hydrocarbons.
This standard applies to all kinds of paints and coatings raw materials. Its clauses include reagents and materials; equipment.
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Document preview — GB/T 23992-2009
National Standard of the People's Republic of China
- ICS
- 87.040
- Classification
- G 50
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 4 Reagents and materials
- 5 Equipment
1 Scope
This standard specifies the determination coatings chlorinated hydrocarbon content by gas chromatography method. These include chlorinated hydrocarbons. dichloromethane, dichloroethane
Dioxane, chloroform, trichloroethane, carbon tetrachloride and other types of chlorinated hydrocarbons.
This standard applies to all kinds of paints and coatings raw materials.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement according to study
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 3186 Paints, varnishes and raw materials for paints and varnishes - Sampling (GB/T 3186-2006, ISO 15528.2000, IDT)
Principle 3
The sample was diluted diluted with a solvent into the gas chromatograph, a capillary column by bringing a test compound with other compounds completely separated
After electron capture detector, within the standard method.
4 Reagents and materials
4.1 Carrier gas
nitrogen, purity >=99.995%.
4.2 auxiliary gas (septum purge and makeup)
with a carrier gas of nitrogen the same nature.
4.3 Internal standard
the sample is not present compound, the compound and other compounds can be completely separated from the chromatogram. Purity of at least
99% (mass fraction) or known purity. For example. bromopropane like.
4.4 Calibration
compounds used for calibration, purity (mass fraction) of at least 99% purity or known.
4.5 Dilution solvent
the organic solvents suitable for dilution of the sample does not contain any substances interfere with the determination of the purity of at least 99% (by mass)
Or known purity. For example. water-borne coatings can be used acetonitrile, dimethylformamide, methanol, or the like; solvent-based paints can be used ethyl acetate, n-hexyl
Dioxane and the like.
5 Equipment
5.1
Gas chromatograph, with the following configuration.
5.1.1
Inlet and dividing device, and vaporizing chamber liner can be replaced.
5.1.2
programmed temperature controller.
5.1.3 Detector
The following three types of detectors either.
5.1.3.1
electron capture detector (ECD).
5.1.3.2
has been calibrated and tuned mass spectrometer or other mass selective detector.
5.1.3.3
have been calibrated Fourier transform infrared spectroscopy (FT-IR spectrometer).
NOTE. If you use 5.1.3.2 or 5.1.3.3 detector for qualitative identification of the test compound, the instrument should be connected to a gas chromatograph and according to the instrument manufacturer
Suppliers for related instructions.
5.1.4 Column
should be effective separation of the test compound. Such as. (5% phenyl) methyl polysiloxane 95% capillary column or equivalent models.
5.2 Injector
feed capacity is at least twice the volume of the sample.
GB/T 23987-2009 | GB/T 23988-2009 | GB/T 23990-2009 | GB/T 23987.2-2026 | GB/T 23987.3-2025 | GB/T 23986.2-2023 | […]
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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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