Research Article
Spatial Variability and Application of Ratios between BTEX in Two Canadian Cities
Table 5
High- and low-ratio sites in Sarnia and characterization of pollutant mixtures.
| Site | T/B | (m + p)/B | O/B | (m + p)/E |
Characterization of pollutant mixtures | B: | T: | E: | X |
| Lows | | | | | Industry | | | | | Group A | | | | | | | | | | 1 | 1.65 | 0.58 | 0.23 | 2.20 |
High concentration of benzene from industry leads to low ratios | 3.82 | 6.32 | 1 | 3.06 | 2 | 1.43 | 0.58 | 0.22 | 1.67 | 2.88 | 4.12 | 1 | 2.32 | 3 | 2.05 | 0.67 | 0.28 | 2.14 | 3.18 | 6.52 | 1 | 3.02 | Mean | 1.71 | 0.61 | 0.24 | 2.01 | 3.30 | 5.65 | 1 | 2.80 |
| Relatively Lows | | | | | Background (Open Area) | | | | | Group B | | | | | | | | | | 34 | 1.88 | 0.86 | 0.37 | 2.55 |
Low concentrations and relatively low ratios | 2.96 | 5.56 | 1 | 3.63 | 35 | 1.92 | 0.97 | 0.38 | 2.72 | 2.81 | 5.41 | 1 | 3.79 | 36 | 1.98 | 1.03 | 0.43 | 2.67 | 2.59 | 5.13 | 1 | 3.77 | 37 | 2.02 | 1.00 | 0.40 | 2.71 | 2.71 | 5.47 | 1 | 3.78 | Mean | 1.95 | 0.96 | 0.39 | 2.66 | 2.77 | 5.39 | 1 | 3.75 |
| Highs | | | | | Traffic | | | | | Group C | | | | | | | | | | 12 | 4.59 | 2.33 | 0.94 | 2.91 | Higher T, E, X concentrations and high ratios | 1.25 | 5.74 | 1 | 4.10 | 21 | 4.57 | 2.80 | 1.10 | 3.07 | 1.10 | 5.00 | 1 | 4.27 | 30 | 3.98 | 1.87 | 0.75 | 2.80 | 1.50 | 5.97 | 1 | 3.92 | 31 | 4.03 | 1.96 | 0.78 | 2.79 | 1.42 | 5.75 | 1 | 3.90 | Mean | 4.29 | 2.24 | 0.89 | 2.90 | 1.32 | 5.62 | 1 | 4.05 |
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