TABLE 1.
Chemical properties of asphalt-permeated soil samples from Pit 91 and Pit 101 of Rancho La Brea Tar Pitsa
| Sample site | pH of suspension
|
EC (μS/cm) | % C | % N | % S | C/N ratio | Concn (μg/ml) of:
|
|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1:1 (CaCl2) | 1:5 (H2O) | Na | Ca | Mg | K | Al | Cd | Cr | Fe | Zn | Cu | Mn | Pb | Ni | ||||||
| Pit 91 | 6.3 | 5.36 | 46 | 22.04 | 0.3 | 0.97 | 74.16 | 13 | 2,902 | 265 | 86.1 | 356 | 2.2 | 2.65 | 484 | 33.9 | 23.4 | 13 | ND | 89.9 |
| Pit 101 | 8.44 | 7.59 | 4,610 | 7.04 | 0.18 | 0.53 | 46.74 | 178 | 3,696 | 4,245 | 1,011 | 11,395 | 1.52 | 19.9 | 14,133 | 126 | 37.1 | 178 | 58.1 | 39.4 |
a
EC, electrical conductivity; ND, not detected.