GB/T 8984-2025 English PDFGB/T 8984: Historical versions
Basic dataStandard ID: GB/T 8984-2025 (GB/T8984-2025)Description (Translated English): Gas analysis - Determination of the contents of trace carbon monoxide, carbon dioxide and hydrocarbon in gases - Gas chromatography with flame ionization detector Sector / Industry: National Standard (Recommended) Date of Implementation: 2026-03-01 Older Standard (superseded by this standard): GB/T 8984-2008 GB/T 8984-2008: Determination of carbon monoxide, carbon dioxide and hydrocarbon in gases -- Gas chromatographic method---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Determination of carbon monoxide, carbon dioxide and hydrocarbon in gases. Gas chromatographic method ICS 71.040.40 G86 National Standards of People's Republic of China Replacing GB/T 8984.1-1997, GB/T 8984.2-1997, GB/T 8984.3-1997 Of carbon monoxide, carbon dioxide and hydrocarbons Gas Chromatography compound Posted 2008-05-15 2008-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard replaces section GB /Determination "trace gas carbon monoxide, carbon dioxide and hydrocarbons T 8984.1-1997 1 Score. gas carbon monoxide, carbon dioxide and methane by gas chromatography ", GB/T 8984.2-1997" trace gas nitrous oxide The determination of carbon, carbon dioxide and hydrocarbons - Part 2. Determination of carbon monoxide, carbon dioxide, and total hydrocarbon Gas Chromatography ", GB/T 8984.3-1997" trace gas carbon monoxide, carbon dioxide and hydrocarbons - Determination - Part 3. Determination of total hydrocarbon gas flame ionization method. " This standard and GB/T 8984.1-1997, GB/T 8984.2-1997 and GB/T 8984.3-1997 comparison, the main differences are as follows. --- This is the standard GB/T 8984.1, GB/T 8984.2 and GB/T 8984.3 merger of three parts; --- Increased confirm instrument detection limit (7.3 of this standard); --- Increasing the typical application example (this standard appendix A). Appendix A of this standard is an informative annex. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee gases. This standard was drafted. Southwest Chemical Industry Research and Design Institute. The main drafters of this standard. He Daoshan, Chen Yali, on behalf of Gao, Zhang. This standard replaces the standards previously issued as follows. --- GB/T 8984-1988, GB/T 8984.1-1997; --- GB/T 8985-1988, GB/T 8984.2-1997; --- GB/T 14606-1993, GB/T 8984.3-1997. Of carbon monoxide, carbon dioxide and hydrocarbons Gas Chromatography compound1 ScopeThis standard specifies the gas carbon monoxide, carbon dioxide gas chromatographic method and hydrocarbons. This standard applies to hydrogen, oxygen, nitrogen, helium, neon, argon, krypton and xenon gases such as carbon monoxide, carbon dioxide and methane measured sub-components, a Determination of carbon monoxide, carbon dioxide and total hydrocarbons (total carbon) measurement and total hydrocarbons.2 Normative referencesThe 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 are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 3723 Sampling of chemical products for industrial use General Safety (GB/T 3723-1999, idt ISO 3165. 1976) GB/T 6680 General rules for sampling liquid chemical products GB/T 6681 General rules for sampling gaseous chemical products3 Method summaryDetermination of trace gas carbon monoxide, carbon dioxide and hydrocarbons by gas chromatography. Sample gas of carbon monoxide, carbon dioxide and hydrocarbons by methanation converter into methane, hydrogen flame ionization detector (FID) was measured. Conversion reactions are as follows. CO + 3H2 350 ℃ ~ 380 ℃ Ni The catalyst CH4 + H2O → CO2 + 4H2 350 ℃ ~ 380 ℃ Ni → CH4 + 2H2O catalyst C m1 m1 + 4 H-shaped - like 2 H2 350 ℃ ~ 380 ℃ Ni → CH4 catalyst m1 NOTE. C m1 H-shaped or unsaturated hydrocarbons to saturated hydrocarbons. When the measurement of carbon monoxide, carbon dioxide, methane sub-sample after the first injection after column separation, re-entering the methanation of Convert; When measuring the total amount of carbon monoxide, carbon dioxide and hydrocarbons, the sample after the first injection by the methanation of Convert, then enter the column points From; when the determination of total hydrocarbon sample is not converted nor separation. 4 materials, equipment Carrier gas. nitrogen, argon, hydrogen, oxygen, air etc may be used as a carrier gas. Typically, the primary component of the carrier gas and the sample selection is the same, such as the determination of hydrogen in Miscellaneous Hydrogen can be used as a carrier gas quality. The carrier gas and the main component may be different, but the main components of the sample should not produce a large interference signals. The carrier gas to be measured Component content of the component content should be lower by about one order of magnitude than the sample, or the response to the carrier gas purification treatment. Gas. high purity hydrogen. Reformed gas. high purity hydrogen. Assisting gas. air (compressed air), by molecular sieves. Standard sample. the sample should supplement gas main components of the same. Component content of the test specimen similar purpose, usually 1 × 10-6 ~ 5 × 10-6 (mole fraction). ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 8984-2025_English be delivered?Answer: Upon your order, we will start to translate GB/T 8984-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 8984-2025_English with my colleagues?Answer: Yes. 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Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 8984-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
