Interface for linking an atmospheric pressure thermogravimetric analyzer to a low pressure mass spectrometer
US5416322A · kind A · utility
9Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1994 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Apr 21, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/0468
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An interface linking a mass spectrometer (MS) to a thermogravitational analyzer (TGA) for adjusting the concentration of volatiles entering the MS. The interface is preferably a capillary column provided with a dilution chamber having a inlet for gas insertion, with one end of the chamber connected to the TGA and the other to the capillary column having its other end directly attached to the MS. In a second embodiment, the interface bypasses the dilution chamber, and is made of a glass tubing protected by a stainless steel tubing, in turn surrounded by a temperature programmable sheath heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.