CHARACTERIZING A MASS DISTRIBUTION PATTERN

摘要

Phosphorescent taggants are used for characterizing and optimizing the mass distribution of a liquid composition deposited on a solid substrate and of components within a blend of particulate materials. The taggant is deposited on the surface of a solid substrate in the presence of a liquid composition to form a tagged substrate, and upon exposure to light for a sufficient period of time, the tagged substrate emits phosphorescence, which is detected visually , photographically or photometrically. The spacial pattern of phosphorescence emitted from the tagged substrate is indicative of the mass distribution of the liquid composition on the solid substrate or of the tagged substrate within a blend of the tagged substrate with another particulate material.