JJF 1930-2021 English PDF

US$509.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1930-2021: Calibration Specification for Organic High Resolution Magnetic Sector Mass Spectrometers
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1930-2021	509	Add to Cart	4 days	Calibration Specification for Organic High Resolution Magnetic Sector Mass Spectrometers	Valid

Similar standards

JJF 1424   JJF 1441   JJF 1363   JJF 1891   JJF 1907   JJF 1929   

Basic data

Standard ID: JJF 1930-2021 (JJF1930-2021)
Description (Translated English): Calibration Specification for Organic High Resolution Magnetic Sector Mass Spectrometers
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A61
Word Count Estimation: 23,251
Issuing agency(ies): State Administration for Market Regulation

JJF 1930-2021: Calibration Specification for Organic High Resolution Magnetic Sector Mass Spectrometers

---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.
(Organic high-resolution fan-shaped side display display) National Metrology Technical Specification of the People's Republic of China Specification for calibration of organic high-resolution sector magnetic field mass spectrometers Published on 2021-10-18 2022-04-18 Implementation Released by the State Administration for Market Regulation Organic High-Resolution Sector Magnetic Field Mass Spectrometer Calibration Specifications Focal Point. National Technical Committee of Physical Chemistry and Metrology Main drafting unit. China Institute of Metrology Comprehensive Testing Center of China Academy of Inspection and Quarantine Participating in the drafting unit. China Environmental Monitoring Station This specification is entrusted to the National Technical Committee of Physical Chemistry and Metrology to be responsible for the interpretation The main drafters of this specification. Tang Hua (China Institute of Metrology) Chen Dazhou (China Institute of Metrology) Li Xiang (Comprehensive Testing Center of China Academy of Inspection and Quarantine) Participating drafters. Xie Nannan (Comprehensive Testing Center of China Academy of Inspection and Quarantine) Shao Mingwu (China Institute of Metrology) Yu Haibin (China Environmental Monitoring Station)

content

Introduction (Ⅱ) 1 Scope(1) 2 References (1) 3 Terms and units of measurement(1) 3.1 Mass Resolution(1) 3.2 Mass-to-charge ratio (1) 3.3 Selected ion detection(1) 3.4 Mass Accuracy(1) 3.5 Quality Stability(1) 3.6 SNR(1) 3.7 Scanning speed(1) 4 Overview(1) 5 Metrology Characteristics(2) 6 Calibration Conditions(2) 6.1 Laboratory environment(2) 6.2 Measuring standards and other instruments (3) 6.3 Reagents(3) 7 Calibration items and calibration methods (3) 7.1 Mass range(3) 7.2 Mass accuracy(3) 7.3 Quality stability(4) 7.4 Mass spectral resolution(4) 7.5 Signal-to-noise ratio(4) 7.6 Repeatability of isotopic abundance ratios (5) 7.7 Retention time repeatability(5) 8 Expression of calibration results (5) 9 Recalibration interval(6) Appendix A Calibration Raw Record Format(7) Appendix B Calibration Certificate Inside Page Format (9) Appendix C Signal-to-Noise Ratio Uncertainty Evaluation Example(11) Appendix D Theoretical mass-to-charge ratio of the main ions of perfluorotributylamine (FC43) (15) Appendix E Theoretical mass-to-charge ratio of main ions of perfluorokerosene (PFK) (16)

Introduction

This specification is based on JJF 1071-2010 "Rules for Compilation of National Metrology Calibration Specifications", JJF 1001-2011 "General Compiled with Measurement Terms and Definitions", JJF 1059.1-2012 "Measurement Uncertainty Evaluation and Representation". The formulation of this specification mainly refers to GB/T 33864-2017 "General Specification for Mass Spectrometer", GB/T 6041- 2020 "General Principles of Mass Spectrometry Analysis Methods", JJF 1164-2018 "Gas Chromatography-Mass Spectrometry Calibration Specifications", GB/T 32267-2015 "Analytical Instrument Performance Measurement Terminology" and other documents. This specification is published for the first time. Specification for calibration of organic high-resolution sector magnetic field mass spectrometers

1 Scope

This specification applies to the calibration of organic high-resolution sector magnetic field mass spectrometers.

2 Reference documents

This specification references the following documents. JJG196-2006 Verification rules for commonly used glass measuring instruments JJG646-2006 Pipette Verification Regulations GB/T 6041-2020 General rules for mass spectrometry analysis methods GB/T 32267-2015 Analytical Instrument Performance Determination Terms GB/T 33864-2017 General Specification for Mass Spectrometer For dated references, only the dated version applies to this specification; for undated references The latest version (including all amendments) applies to this specification.

3 Terminology and units of measurement

The terms and definitions defined in GB/T 32267-2015 and the following apply to this specification. 3.1 Mass resolution massresolution The ability of a mass spectrometer to resolve the difference in mass between two adjacent mass spectral peaks. When M is the average mass of two adjacent peaks, ΔM is the mass difference between adjacent peaks. When the peak valley of two adjacent peaks is 10% of the peak height, the average quality of the two peaks is expressed. The ratio of the mean to the quality difference, that is, R= ΔM 3.2 Masschargeratio The ratio of the mass (m) of an ion to the number of charges (z) it carries, expressed as m/z. The process of selecting only one or more ions of a specific mass for detection. 3.4 Massaccuracy The deviation between the mass spectrometer's measurement of the mass of an ion and the theoretical value. 3.5 Massstability The mass spectrometer is calibrated with a standard mass scale, over a period of time, the change in the measured value of the specified ion mass. 3.6 Signal-to-noise ratio signal-to-noiseratio The ratio of the signal intensity S of the tested sample to the baseline noise intensity N, denoted as β. 3.7 Scan speed scanspeed The speed at which the number of ion masses is scanned (acquired) per unit time.

4 Overview

The principle of the organic high-resolution sector magnetic field mass spectrometer (hereinafter referred to as the mass spectrometer) is that the sample molecules are absorbed by the ionization source when they enter the ionization source. ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1930-2021_English be delivered?

Answer: Upon your order, we will start to translate JJF 1930-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1930-2021_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1930-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.