JJF 1267-2010_English: PDF (JJF1267-2010)
| Standard ID | USD | BUY PDF | Lead-Days | Standard Title (Description) | Status |
| JJF 1267-2010 | 439 |
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Primary Method of Isotope Dilution Mass Spectrometry
| Valid |
| JJF 1267-1990 | 239 |
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(2. 5 × 10 ~ 1 × 10 m/s impact acceleration reference operating technical specifications)
| Obsolete |
| Standard ID | JJF 1267-2010 (JJF1267-2010) | | Description (Translated English) | Primary Method of Isotope Dilution Mass Spectrometry | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A53 | | Classification of International Standard | 17.020 | | Word Count Estimation | 19,128 | | Date of Issue | 2010-11-05 | | Date of Implementation | 2011-02-05 | | Older Standard (superseded by this standard) | JJF 1267-1990 | | Issuing agency(ies) | State Administration of Quality Supervision, Inspection and Quarantine | | Summary | This standard applies to the amount of inorganic constituents analyzed by isotope dilution mass spectrometry measurements, organic ingredients t isotope dilution mass spectrometry method for measurement can be implemented by reference. |
JJF 1267-2010
Primary Method of Isotope Dilution Mass Spectrometry
People's Republic of China National Metrology Technical Specifications
IDMS reference method
Issued on. 2010-11-05
2011-02-05 implementation
The State Administration of Quality Supervision, Inspection and Quarantine released
IDMS reference method
MassSpectrometr
This specification by the State Administration of Quality Supervision, Inspection and Quarantine approved on November 5, 2010, and from
From February 5, 2011 implemented.
Focal point. the National Technical Committee stoichiometric physical
Drafting units. China Institute of Metrology
This specification by the responsible National Technical Committee stoichiometric physical interpretation
The main drafters of this specification.
Wang Jun (China Institute of Metrology)
Drafters participate.
Zhao Motian (China Institute of Metrology)
Lu Hai (China Institute of Metrology)
table of Contents
1 Scope (1)
2 Terminology (1)
3 Overview (2)
4 suitable mass spectrometer (3)
5 Reagents and containers (4)
5.1 enriched isotopes diluent (4)
5.2 Reference Sample (4)
5.3 concentrated isotope diluent certified reference materials (4)
5.4 isotopic certified reference materials (4)
5.5 Containers (4)
5.6 Other (4)
Sample Preparation 6 (4)
6.1 dilution ratio (4)
6.2 Thinner preparations (4)
6.3 Preparation of the mixed sample (5)
6.4 Determination of the blank (5)
7 isotope ratio measurements (5)
7.1 instrument operation (5)
7.2 isotope ratio measurement of choice (5)
7.3 overcoming mass spectrometry interference (5)
7.4 quality-adjusted discriminatory effect (5)
8 Quality Control (6)
9 Measurement of Uncertainty Evaluation and expression (6)
Security of sample 10 (7)
11 References (7)
Application Examples Appendix A (8)
Appendix B Uncertainty Evaluation of the sensitivity coefficient calculation formula (13)
IDMS reference method
1 Scope
Isotope dilution mass spectrometry (isotopedilutionmassspectrometry, referred IDMS) in principle only applicable
For the determination of multi-nuclide elements or compounds thereof, for those corporations are single radionuclide elements, but to find a long life discharge
Radioactive isotope of the element as a diluent, can also be measured by this method, such as iodine. This standard applies to the amount of inorganic component with
Isotope dilution mass spectrometry analysis measurements, isotope dilution mass spectrometry method for measuring the amount of organic components can be implemented by reference.
2 Terminology
2.1 isotope (isotope)
Having the same number of protons, different atoms of different number of neutrons (or a different mass number) of the same element.
2.2 isotopic abundance (isotopicabundance)
Isotopic atoms in the total number of atoms of elements in percentage (%).
2.3 Isotope ratio (isotoperatio)
Quantity ratio of the two isotopes of the number of moles or number of atoms or ions.
2.4 enriched isotopes (isotope-enrichedmaterial)
Obtained by the method of isotope separation enrichment. Separation Enrichment refers to one kind or more isotopes of an element
Or enriched with other isotope separation process of the element, such as a gas diffusion method, electromagnetic separation method.
2.5 diluent (spike)
One or more isotopes of an element mixed with the sample to the natural abundance of the element, usually with these isotopes
There are different from natural substances isotopic abundance, called diluent.
Adding a known quantity in the sample, with the test substance or the same elements but different isotopic abundance of diluent, mix
Evenly balanced isotopic composition, mass spectrometry with isotope ratio measurement mixed sample measured elements, thereby
Calculate the content of the test element or substance.
2.7 mass discrimination (massdiscrimination)
Ion velocity is inversely proportional to the thermal motion of the square root of its mass in the sample or atomic dissociation, ionization, ion transport
Transmission and detection process, the light and heavy isotopes behavior differences, resulting in the deviation of the measurement results, collectively referred to as mass discrimination
Effect can also be mass discrimination under certain circumstances isotope called isotopic fractionation effects. Mass effect discrimination
Isotope ratio measurements should cause ion flow deviates from the true isotopic ratio of two isotopes of the differences in quality
Large, the degree of deviation from the true ratio greater.
2.8 isotopic certified reference materials (isotopecertifiedreferencematerial)
Given isotopic abundance abundance than the standard value or standard value, determined with reference material certificate. For correcting parity
Su effect discrimination than the measurement quality.
2.9 concentrated isotope diluent certified reference materials (enrichedisotopespikecertifiedreferencematerial)
Given isotopic abundances or abundance than the standard value, the concentration of the standard atomic weight and value, with a standard certificate
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