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JJF 1267-2010 English PDF

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JJF 1267-2010: Primary Method of Isotope Dilution Mass Spectrometry
Status: Valid

JJF 1267: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1267-2010	English	439	Add to Cart	4 days [Need to translate]	Primary Method of Isotope Dilution Mass Spectrometry	Valid	JJF 1267-2010
JJF 1267-1990	English	239	Add to Cart	2 days [Need to translate]	(2. 5 × 10 ~ 1 × 10 m/s impact acceleration reference operating technical specifications)	Obsolete	JJF 1267-1990

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Basic data

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	A61
Classification of International Standard	17.020
Word Count Estimation	19,156
Date of Issue	2010-11-05
Date of Implementation	2011-02-05
Older Standard (superseded by this standard)	JJF 1267-1990
Issuing agency(ies)	General 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

---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.
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)

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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