You are here:
QUANTITATIVE X-RAY POWDER DIFFRACTION ANALYSIS OF AIR PARTICULATE SAMPLES
Citation:
Thompson, A., L. Johnson, AND J. Jaklevic. QUANTITATIVE X-RAY POWDER DIFFRACTION ANALYSIS OF AIR PARTICULATE SAMPLES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/D-83/023.
Description:
The design, operation and calibration of an x-ray powder diffraction system for the analysis of air particulate samples are described. The instrument analyzes a sample non-destructively for its major crystalline components. The system has been optimized for the non-destructive analysis of major crystalline species deposited on samples collected with dichotomous air samplers. It includes a position-sensitive detector for increased sensitivity and a small computer for rapid on-line data analysis. A calibration procedure has been developed to give direct quantitative measurements of the primary chemical compounds on the sample. This system was used to analyze 18 pairs of samples of the Houston aerosol. The results of this analysis when combined with the measurement of the elemental concentrations by XRF analysis give additional discrimination in source receptor models.