Laser Raman molecular microprobe (MOLE)

Surface Chemistry of Froth Flotation

“…which Ims been used to analyze fine dust particles could also be useful in analyzing ntineral particles in flotation systems (Dhamelincourt et al .. 1979;Etz. 1979;Rosasco.…”

A Critical Review

“…The principle of a nondestructive microanalytical method has been described that involves the instrumentation of a laser-Raman molecular microprobe. 147 Photons generated by a laser are used to excite the aerosol particles and cause the emission of Raman lines of different components. Each component can be detected, identified and then located by forming a micrographic image that yields the "map" of its distribution in the sample.…”

Applications

“…Elemental sulphur is another strong Raman absorber with strong bands at $200 cm À1 . Particulates in urban dust [4] such as anhydrite, calcite, dolomite and quartz have been identified and characterized. The spectra do however vary with physical form.…”

“…A simple example of the comparative information obtained from the infrared and Raman spectra is a yellow diazo dye (4). The dye has a generic structure with azo, carboxyl and triazine groups.…”