MEASURING METHOD OF FOULING OF MEMBRANE CONTAINING FLUORESCENT NANO PARTICLE

摘要

PURPOSE: A method for measuring the contaminated degree of a separating membrane is provided to monitor the variation of fluorescence peak intensity on the surface of a separating membrane carrying fluorescence nano particles. CONSTITUTION: A method for measuring the contaminated degree of a separating membrane carrying fluorescence nano particles includes the following: a separating membrane carrying fluorescence nano particles is prepared; contaminants are generated on the surface of the separating membrane by lapse of time; and the contaminated degree of the surface of the separating membrane is measured by monitoring the variation of fluorescence peak intensity on the surface of the separating membrane based on a spectrum analyzer. The fluorescence particles are quantum dots with the center composed of CdSe, CdTe, or CdS or fluorescent brightener. The separating membrane is polysulfone, polyvinylidenefluoride, polyetherimide, polyethersulfone, or polypropylene.