Ion source and mass spectrometer
US6639215B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2002 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Mar 22, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/0445
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To provide a mass spectrometer having a high sensitivity to dioxins. In the mass spectrometer including: a sample supply tube for supplying a sample solution containing a sample to be measured; a nebulizer for nebulizing the sample solution supplied from the sample supply tube; an ion source having a needle electrode for ionizing the sample nebulized and vaporized in the nebulizer; and a mass analyzer for analyzing ions formed in the ion source, and a gas of a flow rate corresponding to the flow rate of the sample solution is mixed to the vaporized sample, and a moving direction of the sample is made opposite to a moving direction of ions at a tip of the needle electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.