Summary
A new fluorimetric assay for cationic surfactants is based on their capability of quenching the fluorescence of 8-octadecyloxypyrene-1,3,6-trisulfonate (PTS-18). It is specific for cationic surfactants which can be determined in the 40–400 μg concentration range. The method is considered to be advantageous over former methods in that it only requires addition of the sample solution to the fluorophore solution, followed by measurement of fluorescence intensity of the probe. This is in contrast to existing methods where the detergent/dye ion pair has to be extracted before measurement.
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Marhold, S., Koller, E., Meyer, I. et al. A sensitive fluorimetric assay for cationic surfactants. Fresenius J Anal Chem 336, 111–113 (1990). https://doi.org/10.1007/BF00322547
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DOI: https://doi.org/10.1007/BF00322547