APPLICATION OF DIFFUSE-REFLECTANCE INFRAR ED-SPECTROSCOPY FOR THE QUANTITATIVE-DETERMINATION OF INORGANIC-COMPOUNDS .3. DETERMINATION OF MINERAL PHASES IN AEROSOL SAMPLES

The determination of quartz and calcite in environmental aerosol sampl es was carried out by diffuse reflectance infrared Fourier transform s pectroscopy (DRIFTS). The results were compared to those of the conven tional pellet preparation technique and a good agreement was found. Wi th a reproducible sample preparation, spectra averaging and correction of the systematic measurement error an appropriate precision of the q uantitative determination could be achieved. Simple sample preparation and smaller amount of embedding material are the advantages of DRIFTS over the pellet technique.