Table 4 Parameters of the multivariate regression analysis between DTT activity and PM chemical composition
From: Relationship between redox activity and chemical speciation of size-fractionated particulate matter
Independent Variables | Unstandardized Coefficients | Standardized Coefficients | Significance level | |
|---|---|---|---|---|
| Â | Value | Std. Error | Â | Â |
Constant | 0.0152 | 0.0033 | Â | 0.001 |
PAH > 252(μg per g of PM mass) | 1.43 × 10-4 | 8.78 × 10-6 | 0.812 | < 0.001 |
Cl (%) | -3.40 × 10-3 | 7.3 × 10-4 | -0.199 | 0.001 |
Cr+V (%) | 0.166 | 0.0386 | 0.214 | 0.002 |