A Fluorimetric Method for the Determination of Atmospheric Sulphur Dioxide With 2′, 7′—Dichlorofluorescein∗
- 1 March 1995
- journal article
- research article
- Published by Taylor & Francis in Analytical Letters
- Vol. 28 (5), 909-915
- https://doi.org/10.1080/00032719508001433
Abstract
A rapid, simple and sensitive fluorimetric method has been developed for the determination of atmospheric sulphur dioxide with dichlorofluorescein as fluorogenic reagent (λex = 505 nm, λem = 520 nm) at pH 4.0–6.0. A linear calibration curve was obtained in the range 0.01–0.40 μg SO2/25 ml. The detection limit is 0.01 μg SO2/25 ml. Nitrogen dioxide does not interfere with the method. The method was successfully applied to the determination of atmospheric sulphur dioxide.Keywords
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