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Chemical Composition (299 words) |
 | Mineral formulas are based on the relationship to unit cell volume and the positions of atoms within the unit cell. |
| The calculation of the chemical composition is straight-forward. |
| This is done for each element in the empirical formula and tabulated as the chemical composition. |
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TVA: Chemical Composition of Fine Particles (1243 words) |
| Chemical mass balance (CMB) modeling was used to analyze Chattanooga and Knoxville PM2.5 data. |
| Composition data from the Partnership Network consistently show that the two major constituents of PM2.5 mass in the Valley are organic carbon and sulfate, each constituting about one-third of the mass (Figure 2). |
| This composition is consistent with earlier CMB modeling results which indicated that regional sulfate and particulate matter related to mobile sources (vehicles) and biomass combustion sources (high organic carbon content) accounted for most of the fine mass. |
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