Process for the specific quantitative detection of sulfur compounds and apparatus for carrying out this process
US4111554A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1976 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Feb 17, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N30/78
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved flame photometry detector to give direct quantitative detection of molecules containing sulfur by: PA1 -- the total combustion of the mixture to be analyzed so as to transform the sulfur into sulfur oxide (primarily SO.sub.2); PA1 -- the linearization, by an electronic device, of the signal supplied by the electrometer, in series with the photomultiplier of the detector, prior to recording (this results in the proportionality of the recording to the number of sulfur-containing molecules detected); and preferably the provision of a leakage flow beyond the burner and in front of the detection so as to avoid saturation of the detector. These improvements can be applied to the analysis of a hydrocarbon mixture and of sulfur compounds which have been previously eluted on a chromatographic column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.