Patent ID: 8969791
Filing Date: 2015-03-03
Classification: G01N,H01J

Abstract:
1. A quantitative analysis method for determining a quantity of a target compound based on an ion intensity obtained by detecting an ion originating from the target compound using a mass spectrometer, the method using an intensity of a product ion obtained by selecting and fragmenting an ion originating from a target compound, and the method including following steps: in a measurement of a sample containing a target compound, an ion intensity at a mass-to-charge ratio of an ion having a highest intensity among product ions obtained by performing an MS a detection result of the ion intensity at the mass-to-charge ratio of the ion having the intensity lower than the highest intensity is converted into the ion intensity at the mass-to-charge ratio of the ion having the highest intensity; and in a case where the ion intensity at the mass-to-charge ratio of the ion having the highest intensity is expected or probable to exceed a saturation level, the ion intensity obtained by the aforementioned conversion is used to create a calibration curve for quantitative determination or to derive a quantitative value with reference to the calibration curve.