Method for continuous quantitative detection of sulphur dioxide and an arrangement for implementing this method
US4857472A · kind A · utility
20Cited by
10References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 25, 1988 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | May 25, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/186
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In order to obtain a higher measuring accuracy and better selectivity in the optical quantitative analysis of sulphur dioxide in gaseous or liquid media, it is proposed that the medium to be analyzed be brought into contact with a fluorescent indicator which emits fluorescent light upon excitation and which is from the group of triphenylmethane dyes, and that the extent to which fluorescence is quenched by the SO.sub.2 quencher be used as a measurable variable for quantitative determination of the content of sulphur dioxide in the medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.