TIME-RESOLVED LASER-INDUCED FLUORESCENCE STUDIES OF URANIUM SODIUM DODECYL-SULFATE INTERACTIONS

Time-Resolved Laser-Induced Spectrofluorometry (TRLIS) is a very sensitive and selective technique for uranium determination based on laser excitation followed by temporal resolution of the fluorescence signal. This analytical technique has been used for several years for uranium analysis in various matrices in the nuclear fuel cycle, in the environment, and in the medical field. Depending upon the nature of the head group, they can be classified as cationic, anionic, or nonionic surfactants. When the surfactant is present at concentrations greater than its critical micellar concentration (CMC), aggregates called micelles are formed, into which organic compounds are solubilized. Micelles composed of ionic surfactants exhibit a high surface charge, and counter ions will bind to the surface of the aggregate.