Method of quantitation by mass spectrometry
US8073635B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2008 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Oct 7, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/0009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Quantitation is performed using data from a mass spectrometer. A calibration ion mass spectrum is acquired for each of a plurality of known quantities of a material. From the calibration spectra a plurality of ions that identify the material is determined, and for each ion of the plurality of ions a linear range and linear function are determined. A sample ion mass spectrum is acquired for an unknown quantity of the material. A sample intensity is measured for each ion of the plurality of ions from the sample spectrum. After acquiring the sample spectrum, one or more ions are selected from the plurality of ions such that the sample intensity of each of the one or more ions is within a linear range of the ion. The unknown quantity is calculated from the sample intensities and linear functions of the one or more ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.