Method for continuous quantitative detection of sulphur dioxide and an arrangement for implementing this method
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United States of America Patent
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Aug 15, 1989
Grant Date -
N/A
app pub date -
May 25, 1988
filing date -
May 27, 1987
priority date (Note) -
Expired
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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.
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