Instrument and method for the laser desorption of ions in mass spectrometry
US5045694A · kind A · utility
155Cited by
6References
24Claims
0Family size
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Key dates
| Filing date | Sep 27, 1989 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Sep 27, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D59/44
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In mass spectrometry, a time of flight (TOF) mass spectrometer is used to measure the mass spectrum of organic molecules of mass ranging from 200 Dalton to greater than 200,000 Dalton. Ions from the sample are desorbed by striking the probe tip with laser pulses in a spot size, on the tip, in the range of 0.03-3.0 mm.sup.2. The time of flight of the ions is measured and displayed with a resolution of the ion molecular signal in the range of 300-500 full width at half-maximum definition (FWHM).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.