Method for continuous quantitative detection of sulphur dioxide and an arrangement for implementing this method
First Claim
1. A method for the continuous quantitative detection of sulphur dioxide in gaseous or liquid media, comprising the steps of bringing said medium to be analyzed into contact with a fluorescent indicator emitting fluorescence radiation upon excitation, said fluorescent indicator being selected from the group consisting of triphenylmethane dyes, and measuring the extent of fluorescence-quenching caused by sulphur dioxide contained in said gaseous or liquid media to enable a quantitative determination of the content of sulphur dioxide in said medium to be obtained.
1 Assignment
0 Petitions
Accused Products
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 SO2 quencher be used as a measurable variable for quantitative determination of the content of sulphur dioxide in the medium.
-
Citations
11 Claims
- 1. A method for the continuous quantitative detection of sulphur dioxide in gaseous or liquid media, comprising the steps of bringing said medium to be analyzed into contact with a fluorescent indicator emitting fluorescence radiation upon excitation, said fluorescent indicator being selected from the group consisting of triphenylmethane dyes, and measuring the extent of fluorescence-quenching caused by sulphur dioxide contained in said gaseous or liquid media to enable a quantitative determination of the content of sulphur dioxide in said medium to be obtained.
- 9. An arrangement for the continuous quantitative detection of sulphur dioxide in gaseous or liquid media, comprising a fluorescent indicator on a substrate, said fluorescent indicator being selected from the group consisting of triphenylmethane dyes and at least partly in contact with said medium to be analyzed and emitting fluorescent light upon excitation, wherein said fluorescent indicator is dissolved in an SO2 -permeable membrane.
Specification