GB/T 28125.1-2025 Active National standards

GB/T 28125.1-2025 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

GB/T 28125.1-2025 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

Publish Date: 2025-08-29 Implement Date: 2026-03-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 28125.1-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Industrial gases and chemical gases

ICS Name: Industrial gases

Publish Date: 2025-08-29

Implement Date: 2026-03-01

Pages: 16 pages

Scope

This document describes the experimental steps for determining the methane, acetylene, carbon dioxide, and total hydrocarbon content in oxygen and air, and specifies the experimental conditions, reagents and materials, instrumentation, sampling, experimental steps, experimental data processing, precision and measurement uncertainty, quality control and assurance, and requirements for experimental reports.
This document is applicable to the online monitoring and offline detection of methane, acetylene, carbon dioxide, and total hydrocarbon content in liquid oxygen, liquid air, intake air, and liquid oxygen tanks in air separation processes. The measurement range is (0.05–500) × 10 -6 (mole fraction).

Development Information

Word Count: 25 Thousand words Pages: 16 pages

Replace the following standards

GB/T 28125.1-2011 Determination of hazardous materials in air separation process—Part 1:Determination of hydrocarbons

Referenced Standards

GB/T 4842-1995 Pure argon GB/T 4842-2006 Argon GB/T 4842-2017 Argon GB/T 4844-2011 Pure helium,high pure helium and ultra pure helium GB 4844.2-1995 Pure helium GB/T 4844.3-1995 High purity helium GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 8979-1996 Pure nitrogen GB/T 8979-2008 Pure nitrogen and high purity nitrogen and ultra pure nitrogen GB/T 8979-2025 Pure nitrogen,high purity nitrogen and ultra pure nitrogen GB/T 8984-2008 Determination of carbon monoxide,carbon dioxide and hydrocarbon in gases—Gas chromatographic method GB/T 8984-2025 Gas analysis—Determination of the contents of trace carbon monoxide, carbon dioxide and hydrocarbon in gases—Gas chromatography with flame ionization detector GB/T 8984.1-1997 Determination of carbon monoxide,carbon dioxide and hydrocarbon in the gases—Part 1:Determination of carbon monoxide,carbon dioxide and mathane in the gases—Gas chromatographic method GB/T 8984.2-1997 Determination of carbon monoxide,carbon dioxide and hydrocarbon in the gases—Part 2:Determination of total content of carbon monoxide,carbon dioxide and hydrocarbon in gases—Gas chromatographic method GB/T 8984.3-1997 Determination of carbon monoxide,carbon dioxide and hydrocarbon in the gases—Part 3:Determination of total hydrocarbon in gases—Flame ionization method GB/T 14850-1993 Gas analysis—Vocabulary GB/T 14850-2008 Gas analysis—Vocabulary GB/T 14850-2020 Gas analysis—Vocabulary GB/T 28726-2012 Gas analysis—Gas chromatograph with helium ionization detector GB/T 37182-2018 Gas analysis—Gas chromatograph with plasma emission detector GB/T 43306-2023 Gas analysis—Sampling guidelines JJG 700-1999 Gas Chromatograph JJG 700-2016 Gas Chromatographs GB/T 28726-2025 Gas analysis—Gas chromatograph with helium ionization detector GB/T 4844-2025 Pure helium,high purity heliun and ultra purity helium

Related Standards

GB 4962-1985 Replaced

GB 4962-1985 Technical safety regulation for gaseous hydrogen use

Publish Date: 1985-03-01

GB/T 8981-1988 Replaced

GB/T 8981-1988 Determination of trace hydrogen in gases—Gas chromatographic method

Publish Date: 1988-03-15

GB/T 10627-1989 Replaced

GB/T 10627-1989 Gas analysis—Preparation of calibration gas mixtures—Static volumetric methods

Publish Date: 1989-03-01

GB/T 10628-1989 Replaced

GB/T 10628-1989 Gas analysis—Determination of composition of calibration gas mixtures—Comparison methods

Publish Date: 1989-03-22

GB 13548-1992 Replaced

GB 13548-1992 General principle of safety assessment for phosgene and its products plant

Publish Date: 1992-06-29

GB 13591-1992 Replaced

GB 13591-1992 Rules for the filling of dissolved acetylene

Publish Date: 1992-08-05