Concentration of coarse and fine dust in granular materials is an important parameter that allows us to estimate the theoretical dust emission factor from the material. In other words, the dust emission factor is equal to or smaller than the concentration of loose dust in the bulk material.
LCS Laboratory Inc. offers a laboratory test for the determination of PM10 fraction in bulk material like soil, granular polymers, recycled concrete, and similar products. The test is ideologically based on ASTM method D7928: “Standard Test Method for Particle-Size Distribution (Gradation) of Fine-Grained Soils Using the Sedimentation (Hydrometer) Analysis”, where the material is re-suspended in a water-based solution and the concentration of small particles is measured. For the purpose of this project, we improved the analytical part of the method (its sensitivity) by replacing the hydrometer with a much more sensitive gravimetric analysis.
Typically we require 1 kg of sample for analysis, which should be delivered in a metal or plastic container.
In our test, the 10-micron fraction is extracted from the sample, accurately measured with a sensitivity of 10 mg/kg.
If necessary, the PM10 fraction can be further analyzed for quartz, metals, and other potentially harmful ingredients. Please contact LCS Laboratory to discuss your project or request a free, no-obligation quote.
