Table 3 -.
Summary of results from factor analysis. Dominant elements in each factor, arranged in order of factor loading weight. Only factor loadings >0.40 were listed. Bold text denotes factor loading ≥ 0.90. Numerical percentage is cumulative variance. N/A denotes factors not present. (Additional details in Tables S5a, S5b, S7a, and S7b).
| Medium | Major Elements | |||||||
|---|---|---|---|---|---|---|---|---|
| Factor 1 | % | Factor 2 | % | Factor 3 | % | Factor 4 | % | |
| Bulk Dust | Mg, Ca, P | 33 | Al, Ti, Fe, P | 65 | Na, K | 91 | N/A | - |
| Bulk Soil | Mg, Ca, Al | 33 | K, Al, P, Na | 58 | Ti, Na, Al | 77 | Fe, Al, P | 95 |
| Fine Dust | Mg, Ca, K | 33 | Fe, Na, Ti | 64 | P, K, Al | 93 | N/A | - |
| Fine Soil | Ca, Mg, Na, Fe | 42 | K, Ti, Al | 73 | Fe, Al | 88 | N/A | - |
| Minor Elements | ||||||||
| Bulk Dust | Co, V, Mn | 34 | Cr, Sn, Zn | 56 | Pb, Cu, Zn | 76 | Ni, Cu, Mn | 94 |
| Bulk Soil | Mn, V, Co | 35 | Pb, Cu | 56 | Cr, Cu, Ni | 76 | Sn, V | 90 |
| Fine Dust | Ni, Cr, Mn, Cu, Zn, Co | 46 | V, Co | 72 | Pb, Sn | 88 | N/A | - |
| Fine Soil | Cr, Cu, Ni, Zn, Sn | 34 | Pb, V, Cu | 58 | Co, Mn | 80 | N/A | - |