SINTERED CHROMATOGRAPHIC PLATE AND METHOD FOR PRODUCING THE SAME

• Main Authors: KADONO T,JA, OKUMURA T,JA
• Format: Patent
• Language: English
• Published: 12.02.1974
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; JOINING GLASS TO GLASS OR OTHER MATERIALS; MEASURING; METALLURGY; MINERAL OR SLAG WOOL; PHYSICS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TESTING

A plate or thin-layer chromatographic element made by coating a refractory and chemically-stable support with a dispersion of fine particles of chromagtographically-active inorganic adsorbent, fine particles of a refractory and acid-resistant fluorescent pigment of red luminescence and powdered fluorescent glasses of blue and green luminescences in a liquid dispersing medium, the mixing ratio of said fluorescent glasses and fluorescent pigment is so determined that the obtained mixture may have a blend of the luminescences of the three fundamental colors, that is, a pure-white luminescence upon excitation by means of an ultraviolet irradiation, removing the dispersing medium, and heating the coated layer to make it adherent and thereby to form a continuous, coherent and porous sintered-layer. Particles of the powdered glass contained in said sintered-layer hold a uniform distribution of the adsorbent particles and fluorescent pigment particles, and form firm bondings between each other and with the surface of the support without any detriment to the activity of the spots The element enables the discrimination between two contiguous spots of a chromatogram of colorless compounds to be discriminated, each of which has at least one absorption band in the ultraviolet region and the corresponding quenched emission on the thin-layer capable of emitting a pure-white luminescence in the absence of the chromatogram.