A laboratory resuspension chamber to measure fugitive dust size distributions and chemical compositions

• Published in: Atmospheric environment (1994) Vol. 28; no. 21; pp. 3463 - 3481
• Main Authors: Chow, Judith C., Watson, John G., Houck, James E., Pritchett, Lyle C., Fred Rogers, C., Frazier, Clifton A., Egami, Richard T., Ball, Bridget M.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.12.1994; Elsevier Science
• Subjects: Applied sciences; Atmospheric pollution; Exact sciences and technology; geological material; PM 10; Pollutants physicochemistry study: properties, effects, reactions, transport and distribution; Pollution; receptor modeling; resuspension chamber; source characterization; source profiles; PM 10; source characterization; source profiles; resuspension chamber; receptor modeling; geological material; Suspended particle; Particle size; Dust; Chemical analysis; Aerosols; Pollution source inventory; Air pollution; Air quality; Measurement method
• ISSN: 1352-2310; 1873-2844
• DOI: 10.1016/1352-2310(94)90005-1

A laboratory resuspension chamber is described that segregates dried and sieved geological material into size fractions less than 0, 1.0, 2.5, 10 and ∼30 gmm aerodynamic diameters onto filter media suitable for chemical analysis. Eight impactor inlets located in a rectangular array within a 0.4 m 3 chamber provide the size segregation. Tests show that mass concentrations across the array vary by no more than ± 10%. Filter samples are normally submitted to gravimetric, X-ray fluorescence, ion chromatography, automated colorimetric, atomic absorption spectrophotometric, and thermal/optical reflection analysis for ∼ 50 chemical species. Chemical profiles and size distribution have been measured on more than 200 dust samples throughout the world.