GB/T 28125.1: Evolution and historical versions
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| GB/T 28125.1-2025 | English | RFQ |
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Gas analysis - Determination of the contents of hazardous materials in air separation process - Part 1: Determination of contents of methane, acetylene, carbon dioxide and hydrocarbons
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GB/T 28125.1-2025
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| GB/T 28125.1-2011 | English | 209 |
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Determination of hazardous materials in air separation process -- Part 1: Determination of hydrocarbons
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GB/T 28125.1-2011
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Basic data | Standard ID | GB/T 28125.1-2025 (GB/T28125.1-2025) | | Description (Translated English) | Gas analysis - Determination of the contents of hazardous materials in air separation process - Part 1: Determination of contents of methane, acetylene, carbon dioxide and hydrocarbons | | Sector / Industry | National Standard (Recommended) | | Date of Implementation | 2026-03-01 | | Older Standard (superseded by this standard) | GB/T 28125.1-2011 | GB/T 28125.1-2011: Determination of hazardous materials in air separation process -- Part 1: Determination of hydrocarbons
---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 hazardous materials in air separation process Part 1. Determination of hydrocarbons
ICS 71.040.40
G86
National Standards of People's Republic of China
Air separation process measurement of hazardous substances
Part 1. Determination of hydrocarbons
Part 1. Determinationofhydrocarbons
Issued on. 2011-12-30
2012-10-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 28125 "air separation process hazardous substances Determination" is divided into three parts.
--- Part 1. Determination of hydrocarbons;
--- Part 2. Determination of mineral oil;
--- Part 3. Determination of nitrogen oxides.
This section GB/T 28125 Part 1.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This part is proposed by the China Petroleum and Chemical Industry Association.
This part of the National Gas Standardization Technical Committee (SAC/TC206) centralized.
This section is drafted. Dalian Institute of Chemical Physics, Chinese Academy of Science and Technology Development Company Kona, COMAQ Instruments, Shanghai Hua love color
Spectrum Technologies Co., Southwest Chemical Industry Research and Design Institute.
The main drafters of this section. Wangshao Nan, Wang Guiyue, Fang Hua, Niu Yan-dong.
Air separation process measurement of hazardous substances
Part 1. Determination of hydrocarbons
1 Scope
This section provides an air separation processes of liquid oxygen, liquid air, measured air suction outlet side and liquid oxygen tank in hydrocarbons
law. This section applies to oxygen or air, online and offline monitoring to detect total hydrocarbons and C1 ~ C4 hydrocarbons.
This section measured C1 ~ C4 hydrocarbons include. methane, ethane, ethylene, acetylene, propane, propylene, n-butane, isobutane, 1,3-butylene
Diene.
This section recommended measurement of these components, but are not limited to these components. When specific monitoring, rational analysis should ring surrounding an air separation unit
Environment, increase monitoring of air and other oxygen may endanger the safe operation of an air separation of organic components.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 3634.2 hydrogen - Part 2. purity, high purity and ultra pure hydrogen
GB/T 3723 Sampling of chemical products for industrial use General Safety
GB/T 4844 pure helium, high purity helium and ultra-pure helium
GB/T 6681 General rules for sampling gaseous chemical products
GB/T 8984 of carbon monoxide, carbon dioxide and hydrocarbons by gas chromatography
GB 16912 Deep frozen production of oxygen and related gas safety technical regulations
JB6898 cryogenic liquid storage equipment safety rules
JJG700 GC verification procedures
Method 3
3.1 using a gas chromatograph equipped with a helium ionization detector, hydrocarbon samples was measured after removal of the sample pre-separation process
content.
3.2 with the use of a flame ionization detector gas chromatography, sample pre-concentration process or direct injection measurement sample total carbon
Hydrogen compound content and hydrocarbon content.
3.3 When the above method of measurement results objection, hydrocarbons measured helium ionization gas chromatography to arbitration.
4 Instrument
4.1 helium ionization gas chromatography
Using helium ionization gas chromatograph equipped with pneumatic automatic cutting device.
4.2 flame ionization gas chromatograph
4.2.1 flame ionization gas chromatograph used shall comply with the provisions of JJG700.
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