METHOD AND SYSTEM FOR REGULATING NUMBER OF IONS IN ION TRAP MASS ANALYZER OF MASS SPECTROMETER

摘要

A method and system for regulating the number of ions in an ion trap mass analyzer of a mass spectrometer (10). The method comprises: introducing ions of a sample to be tested into an ion trap (S101); performing initial mass spectrometry analysis, saving and analyzing each initial parameter, and outputting initial mass spectrum information (S102); analyzing the number of ions that enter the ion trap and are stored, and regulating the number of ions (S103); establishing a relationship model between each initial parameter and the number of ions by means of pre-experiments, and performing gain compensation on spectrum peak intensity obtained after regulation to determine each optimal initial parameter (S104); performing mass spectrometry analysis by using the optimal initial parameters, and outputting a mass spectrum in which the spectrum peak intensity corresponds to a sample concentration (S105).