Mass spectrometric substance identification
US7271384B2 · kind B2 · utility
2Cited by
3References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2004 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Apr 24, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/165
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to the identification of substance ions, which are usually generated by electro spray ionization after separation by liquid chromatography or capillary electrophoresis, with the help of libraries with mass spectra. The substance ions are frequently formed not only in a protonated (or deprotonated) form but also as adducts with cations or anions, a fact which complicates identification. The invention involves making identification more accurate by additionally carrying out a determination of the most probable molar mass with the help of adduct patterns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.