Table 1.
Petroleum hydrocarbon concentrations in undiluted water-accommodated fractions (WAFs) measured at test initiation
| Class | Mean (±SD), mg/L | Relative percentage contribution to TPAH | ||||
|---|---|---|---|---|---|---|
| WAF (n = 11) | BWWAF (n = 6) | CEWAF (n = 12) | WAF | BWWAF | CEWAF | |
| TPH | 1.95 (±1.15) | 6.51 (±1.94) | 379 (±253) | |||
| TPAH | 0.067 (±0.022) | 0.191 (±0.047) | 8.00 (±5.38) | |||
| ∑ Parent PAHs | 0.034 (±0.011) | 0.069 (±0.014) | 1.03 (±0.370) | 50% | 38% | 13% |
| ∑ Alkylated PAHs | 0.033 (±0.011) | 0.122 (±0.033) | 6.97 (±0.5.01) | 50% | 62% | 87% |
| Parent naphthalene | 0.030 (±0.010) | 0.058 (0.012) | 0.334 (±0.127) | 45% | 31% | 4% |
SD = standard deviation; TPAH = total polynuclear aromatic hydrocarbons; BWWAF = breaking wave water-accommodated fraction; CEWAF = chemically enhanced water-accommodated fraction.