Search result: GB/T 37847-2019
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General rules for isotope composition analysis by mass spectrometry
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GB/T 37847-2019
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| Standard ID | GB/T 37847-2019 (GB/T37847-2019) | | Description (Translated English) | General rules for isotope composition analysis by mass spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | N50 | | Classification of International Standard | 71.040.99 | | Word Count Estimation | 10,188 | | Date of Issue | 2019-08-30 | | Date of Implementation | 2020-03-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 37847-2019
General rules for isotope composition analysis by mass spectrometry
ICS 71.040.99
N50
National Standards of People's Republic of China
General rules for isotope composition mass spectrometry
Published on.2019-08-30
2020-03-01 implementation
State market supervision and administration
China National Standardization Administration issued
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the Ministry of Science and Technology of the People's Republic
This standard is under the jurisdiction of the National Instrument Analysis and Testing Standardization Technical Committee (SAC/TC481).
This standard was drafted. China Institute of Metrology, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing Institute of Geology, Nuclear Industry,
Institute of Geology, Chinese Academy of Geological Sciences, Institute of Geology and Geophysics, Chinese Academy of Sciences.
The main drafters of this standard. Wang Jun, direction, Bohai, Ding Yuping, Cui Jianyong, Song Wei, Guo Chunhua, Ren Tongxiang.
General rules for isotope composition mass spectrometry
1 Scope
This standard specifies the general method for mass spectrometer analysis of elemental isotope composition in matter.
This standard applies to thermal ionization mass spectrometry (TIMS), inductively coupled plasma mass spectrometry (ICP-MS), gas stable isotope ratio mass spectrometry
The instrument (GSIRMS) type instrument measures the isotope composition.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the most recent version (including all amendments) applies to this document.
GB/T 32267-2015 Analytical instrument performance measurement terminology
GB/T 34826-2017 Method for determination of performance of quadrupole inductively coupled plasma mass spectrometer
JJF1005-2016 Standard substance general terms and definitions
3 Terms and definitions
GB/T 32267-2015, GB/T 34826-2017, JJF1005-2016 defined and the following terms and definitions apply to this
file.
3.1
Isotope isotope
Different atoms of the same element with the same number of protons, different numbers of neutrons (or different mass numbers).
3.2
Isotope ratio isotopicratio
The number of moles of two isotopes (3.1), or the number of atoms, or the number of ions.
3.3
Isotope abundance isotopicabundance
The percentage (%) of the isotope (3.1) atom in the total number of atoms of the element.
Note. Rewrite GB/T 32267-2015, definition 4.10.
3.4
Isotope composition isotopic composition
The proportion of each isotope (3.1) in an element expressed in atomic percent, and their sum is equal to 1.
Note 1. The isotope composition can be expressed in abundance and can also be expressed as a ratio or a delta value.
Note 2. The δ value refers to the relative difference between the isotope ratio of the sample given by mass spectrometry and the ratio of the standard sample, which can be expressed in thousands of steps (‰).
3.5
Concentrated isotope isotope-enrichedmaterial
Isotope (3.1) material obtained by enrichment.
Example. Commonly used enrichment methods include gas diffusion method, electromagnetic separation method, and the like.
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