Determination of filter-collected airborne matter by x-ray fluorescence.
D000397:Air Pollution / Q000032:analysis*; D004391:Dust / Q000032:analysis; D005374:Filtration; D005453:Fluorescence; D008670:Metals / Q000032:analysis; D008722:Methods; D011874:Radiometry; D013057:Spectrum Analysis
D004391:Dust; D008670:Metals