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GB/T 37849-2019: Method of performance testing for liquid chromatography tandem time of flight mass spectrometry
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GB/T 37849-2019: Method of performance testing for liquid chromatography tandem time of flight mass spectrometry

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Method of performance testing for liquid chromatography tandem time of flight mass spectrometry ICS 71.040.30 N53 National Standards of People's Republic of China Liquid chromatography time-of-flight mass spectrometer Performance measurement method 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, Guangzhou Hexin Instrument Co., Ltd., Jinan University. The main drafters of this standard. Su Fuhai, Dai Xinhua, Gao Wei, Song Dewei, Wang Weihua, Shao Mingwu, He Haihong, Huang Zhengxu, Zhu Hui, Hong Yi. Liquid chromatography time-of-flight mass spectrometer Performance measurement method

1 Scope

This standard specifies the performance test method for liquid chromatography time-of-flight mass spectrometry. This standard applies to the performance measurement of various forms of liquid chromatography time-of-flight mass spectrometry.

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 latest edition (including all amendments) applies to this document. GB/T 13966 Analytical Instrument Terminology GB/T 32267 Analytical instrument performance measurement terminology JJF1528 Time-of-Flight Mass Spectrometer Standard Specification

3 Terms and definitions

The following terms and definitions defined in GB/T 32267, GB/T 13966, JJF 1528 apply to this document. 3.1 Resolution resolution The ability of the instrument to distinguish between two adjacent mass spectral peaks. Note. There are two calculation methods. ---Bimodal method. select two adjacent peaks for calculation; ---Single peak method. Calculate using a single peak. 3.2 Sensitivity sensitivity The response of the instrument to a sample of concentration at a certain mass peak produced by the selected compound under specified conditions. General use The signal-to-noise ratio at a given concentration characterizes the sensitivity, and the signal-to-noise ratio is the ratio of the signal strength of the sample to the noise intensity. 3.3 Mass range massrange The range of mass-to-charge ratios of ions that can be measured under normal conditions. 3.4 Linear range The concentration range in which the response value is linear with the concentration of the analyte. 3.5 Mass stability massstability The change in mass spectrometer versus ion mass-to-charge ratio measurements over time. ...