2018 Volume 91 Issue 1 Pages 17-23
Development of fluorescent sensing methods for detection and quantification of a trace amount of water in solutions, solids, the atmosphere and products has received considerable attention in recent years from the viewpoint of fundamental studies in photochemistry, analytical chemistry and photophysics, and is eagerly anticipated in industry because of their potential applications to environmental and quality control monitoring systems. Karl Fischer titration method is a classic titration method in analytical chemistry that uses coulometric or volumetric titration to determine trace amounts of water in samples such as solid and solution. Actually, Karl Fischer titration method has sufficient accuracy, but is difficult to visualize water in sample and on the surface of sample. On the other hand, if we can develop fluorescence analysis for detection and quantification of water, this technique allows not only sufficient accuracy but also visualization of water. This paper provides the fluorescence analysis for detection, quantification and visualization of water based on PET (photo-induced electron transfer) of fluorescent dyes and their fluorescent sensing mechanism for detection and quantification of a trace amount of water in solutions.
