KBr Disk Technique for Infrared Microanalysis with Freeze Drying of Samples Soluble in Organic Solvents but Insoluble in Water

Abstract

The potassium bromide disk technique has been adapted for quantitative microanalysis of compounds which are soluble in organic solvents, but insoluble in water. The principal improvements of the technique comprise exclusive use of freeze drying for preparation of suspensions of samples in solid potassium bromide, avoidance of contamination during the sample preparation, and lubrication of the die with graphite The present experimental data indicate that the disk technique can be used for quantitative infrared microanalysis of binary mixtures of complex organic compounds.

Biosorption of hexavalent chromium using biofilm of E. coli supported on granulated activated carbon

“…A raw sample of bacterial biomass and biomass loaded with Cr 6? were analyzed using an Infrared spectrophotometer (IR) Model 470 Shimadzu corporation adopting KBr disk technique (Schwarz et al 1985).…”