Abstract
A simple and specific fluorometric determination of sulfites in rainwater was developed. Rainwater was collected in the field in a trapping buffer containing EDTA (pH 10.0), which effectively prevented the loss of sulfites by oxidation. Then its aliquot was labeled with N-(9-acridinyl)maleimide (NAM) and the concentration was determined on a high performance liquid Chromatograph equipped with a fluorometer. The concentration range of the determination was about 1.0-100 pmol on column. The determination required less than five ml of rainwater. The recovery of the added sulfite was almost quantitative.
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Akasaka, K., Suzuki, T., Ohrui, H. et al. Fluorometric Determination of Sulfites in Rainwater. ANAL. SCI. 2, 443–446 (1986). https://doi.org/10.2116/analsci.2.443
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DOI: https://doi.org/10.2116/analsci.2.443