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JJF 1448-2014: Calibration Specification for Superconducting Pulsed Fourier Transform Nuclear Magnetic Resonance Spectrometers
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Calibration Specification for Superconducting Pulsed Fourier Transform Nuclear Magnetic Resonance Spectrometers
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JJF 1448-2014
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Basic data | Standard ID | JJF 1448-2014 (JJF1448-2014) | | Description (Translated English) | Calibration Specification for Superconducting Pulsed Fourier Transform Nuclear Magnetic Resonance Spectrometers | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A55 | | Classification of International Standard | 17.220 | | Word Count Estimation | 16,127 | | Date of Issue | 2/14/2014 | | Date of Implementation | 5/14/2014 | | Quoted Standard | ASTM E386-90-2011 | | Adopted Standard | ASTM E386-90(2011), NEQ | | Regulation (derived from) | ?AQSIQ Announcement 2014 No. 17 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine | | Summary | This Standard applies to 300MHz and above the superconducting pulse Fourier transform NMR spectrometer (hereinafter referred to as the instrument) calibration. | JJF 1448-2014: Calibration Specification for Superconducting Pulsed Fourier Transform Nuclear Magnetic Resonance Spectrometers
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Calibration Specification for Superconducting Pulsed Fourier Transform Nuclear Magnetic Resonance Spectrometers
People's Republic of China National Metrology Technical Specifications
Superconducting pulse Fourier transform NMR spectrometer
Calibration Specification
Issued on. 2014-02-14
2014-05-14 implementation
The State Administration of Quality Supervision, Inspection and Quarantine released
Superconducting pulse Fourier transform
NMR spectrometer calibration specifications
ResonanceSp
ectrometers
Focal point. the National Technical Committee stoichiometric physical
Drafting units. China Institute of Metrology
This specification stoichiometric commissioned National Technical Committee is responsible for the physical interpretation
Drafters of this specification.
Zhang Wei (China Institute of Metrology)
Huang Ting (China Institute of Metrology)
Dai Xinhua (China Institute of Metrology)
table of Contents
Introduction (Ⅱ)
1 Scope (1)
2. References (1)
3 terminology and units of measurement (1)
3.1 Chemical shift (1)
3.2 free induction decay (FID) (1)
Linewidth factor 3.3 (1)
4 Overview (1)
4.1 Principle (1)
4.2-instrument (2)
5 Metrological characteristics (2)
Calibration Condition 6 (2)
6.1 laboratory environment (2)
6.2 Standard substance (2)
6.3 Experimental Condition (3)
7 calibration items and calibration methods (3)
7.1 1H spectral sensitivity (3)
7.2 13C spectral sensitivity (3)
7.3 1H spectral resolution (4)
7.4 13C Spectral Resolution (4)
7.5 1H line type (4)
7.6 13C line type (4)
7.7 1H spectrum quantitative reproducibility (4)
8 calibration results (4)
9 Recalibration interval (5)
Appendix A calibration record format (6)
Appendix B Calibration Certificate page format (7)
Appendix C instrument parameters is recommended (8)
Appendix D Evaluation of Uncertainty (9)
Introduction
Part of this specification with reference to the use of international instruments ASTME386-90 (2011) High-resolution nuclear magnetic resonance (NMR)
Spectroscopic characterization implement data standards [StandardPracticeforDataPresentationRelatingtoHigh-
ResolutionNuclearMagneticResonance (NMR) Spectroscopy].
This specification is the first release.
Superconducting pulse Fourier transform NMR spectrometer
Calibration Specification
1 Scope
This instruction applies to 300MHz and above the superconducting pulse Fourier transform NMR spectrometer (hereinafter referred to as equipment)
Calibration.
2. References
Characterization of the implementation of standards ASTME386-90 (2011) High-resolution nuclear magnetic resonance (NMR) spectroscopy data
(StandardPracticeforDataPresentationRelatingtoHigh-ResolutionNuclearMagnetic
Resonance (NMR) Spectroscopy)
"Handbook of Analytical Chemistry --- Seventh Volume NMR Spectroscopy" Beijing. Chemical Industry Press
For dated references, only the dated edition applies to this specification; undated reference documents
Member, the latest edition (including any amendments Version) applicable to this specification.
3 terminology and units of measurement
3.1 chemical shift chemicalshift
Proton magnetic field in the same or other magnetic core, which because of its different chemical environment in the molecule, and in
Phenomenon of resonance at different frequencies, and whose scale commonly used to measure the reference material and the sample resonance frequency difference list
Shown, denoted δ, dimensionless 1.
δ =
νS-νR
ν instrument × 10
6 (1)
Where.
νS --- the resonance frequency of the sample, Hz;
νR --- the resonance frequency of the reference material, Hz;
ν instruments --- instrument operating frequency, Hz.
3.2 free induction decay (FID) freeiductiondecay
Spin system under pulsed accept induction coil signal occurs, its intensity over time and decay.
3.3 linewidth factor linebroadeningfactor
For each data point free induction decay signal is exponential weighting factor used. When the factor is equal to
Zero, not weighted.
4 Overview
4.1 Principle
Nuclear magnetic resonance spectroscopy, the study has some moments of nuclei in a static magnetic field and the magnetic field due to the interaction of the magnetic moment
Resonance is formed by a set of split levels, appropriate action under the RF frequency, energy level transitions occur between now and the emergence of
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