GB/T 46880-2025Carbon dioxide geological storage - Carbon dioxide test methods (English PDF)
二氧化碳地质封存 二氧化碳检测方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 31, 2025
Implementation date
July 1, 2026
Scope
GB/T 46880-2025 is the English-translated version of 二氧化碳地质封存 二氧化碳检测方法.
GB/T 46880-2025 is the Chinese standard "Carbon dioxide geological storage - Carbon dioxide test methods". Its scope clause reads: This document describes CO2 detection methods in carbon dioxide (CO2) geological sequestration projects, including detection conditions, detection content, and different receptors.
Contents include CO2 detection instruments and procedures, CO2 leakage flux detection in wells, and detection reports. This document applies to data acquisition on CO2 concentrations or fluxes in receptors such as groundwater, soil, and atmosphere during terrestrial CO2 geological sequestration projects.
For CO2 detection methods in geological utilization such as CO2 enhanced oil recovery and CO2 enhanced gas recovery, please refer to this document. Its clauses include terms and definitions.
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Document preview — GB/T 46880-2025
National Standard of the People's Republic of China
- ICS
- 27.010
- Classification
- F 29
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- 1.Scope
- 2 Normative References
- 3.Terms and Definitions
- 4.Testing conditions
- 5.Inspection Content
- 6.Different receptor CO2 detection instruments and detection procedures
- 7.Wellbore CO2 Leakage Flux Detection
- 8.Test Report 6.
- Appendix A (Informative) Sample Test Report
- References
1 Scope
This document describes CO2 detection methods in carbon dioxide (CO2) geological sequestration projects, including detection conditions, detection content, and different receptors.
Contents include CO2 detection instruments and procedures, CO2 leakage flux detection in wells, and detection reports.
This document applies to data acquisition on CO2 concentrations or fluxes in receptors such as groundwater, soil, and atmosphere during terrestrial CO2 geological sequestration projects.
For CO2 detection methods in geological utilization such as CO2 enhanced oil recovery and CO2 enhanced gas recovery, please refer to this document.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 6682-2008 Specifications and test methods for water used in analytical laboratories
GB 15618 Standard for Risk Control of Soil Pollution in Agricultural Land (Trial)
DZ/T 0064.49-2021 Groundwater Quality Analysis Methods Part 49.Determination of Carbonate, Bicarbonate and Hydroxide Ions
Titration
HJ/T 166-2004 Technical Specification for Soil Environmental Monitoring
HJ494-2009 Technical Guidelines for Water Quality Sampling
HJ870-2017 Determination of Carbon Dioxide in Exhaust Gas from Stationary Sources - Non-dispersive Infrared Absorption Method
SL80-1994 Determination of Free Carbon Dioxide (Alkali Titration Method)
SL81-1994 Determination of corrosive carbon dioxide (acid titration method)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 CO2 leakage flux (carbon dioxide flux)
The mass of CO2 entering the receptor per unit area through the leakage interface per unit time.
Note. The unit is kilograms per square meter per second [kg/(m2·s)].
[Source. GB/T 35377-2017, 2.9, with modifications]
3.2
The CO2 content in the atmosphere or a specific environmental space is usually expressed as a volume fraction or mass concentration.
Note. Units are volume fraction (%), mole fraction (%), milligrams per kilogram (mg/kg), or ppm (1ppm = 1×10-6).
3.3
A device for detecting CO2 concentration in different environments.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 13 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB 15618-2018 — Soil environmental quality - Risk control standard for soil contamination of agricultural land (trial)
GB/T 6682-2008 — Water for analytical laboratory use - Specification and test methods
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