Table 1.
List of sterols that were analyzed in this study. Cbiosolids (μg kg1) values were taken from the TNSSS 2009 reports (U.S. EPA, 2009) and compound structures, log Dow values at pH 7.5, and CAS numbers were taken from RSC online database and the literature (Ying et al., 2002). Half-life values reported are for aquatic environments and were estimated using the PBT Profiler of the U.S. EPA.
| Desmosterol |
|
Stigmasterol |
|
| log Dow: 9.27 | log Dow: 10.07 | ||
| CAS: 313-04-2 | CAS: 83-48-7 | ||
| Cbiosolids: 2230 (min) | Cbiosolids: 455 (min) | ||
| 806,000 (max) | |||
| 94,400 (max) | 120,671 (mean) | ||
| 14,816 (mean) | t1/2: 60 days | ||
| t1/2: 60 days |
|
||
|
β-Stigmastanol | ||
| Ergosterol | log Dow: 10.07 | ||
| log Dow: 9.3 | CAS: 83-45-4 | ||
| CAS: 57-87-4 | Cbiosolids: 3440 (min) | ||
| Cbiosolids: 2180(min) | 1,330,000 (max) | ||
| 152,834 (mean) | |||
| 91,900 (max) | t1/2: 60 days | ||
| 20,080 (mean) |
|
||
| t1/2: 60 days | β-Sitosterol | ||
|
log Dow: 10.73 | ||
| Campesterol | CAS: 83-46-5 | ||
| log Dow: 9.97 | Cbiosolids: 1210 (min) | ||
| CAS: 474-62-4 | 1,640,000 (max) | ||
| Cbiosolids: 2840(min) | 302,123 (mean) | ||
| t1/2: 60 days | |||
| 524,000 (max) |
|
||
| 97,298 (mean) | Estrone (E1) | ||
| t1/2: 60 days | log Dow: 3.62 | ||
|
CAS: 53-16-7 | ||
| Coprostanol | Cbiosolids: 19.70 (min) | ||
| log Dow: 10.06 | 965 (max) | ||
| CAS: 360-68-9 | 109.34 (mean) | ||
| Cbiosolids: 7720(min) | t1/2: 38 days | ||
|
|||
| 43,700,000 (max) | 17-β-Estradiol (E2) | ||
| 2,795,254 (mean) | log Dow: 4.15 | ||
| t1/2: 60 days | CAS: 50-28-2 | ||
|
Cbiosolids: 16.20 (min) | ||
| Cholestanol | 355 (max) | ||
| log Dow: 10.07 | 35.57 (mean) | ||
| CAS: 80-97-7 | t1/2: 38 days | ||
| Cbiosolids: 3860(min) |
|
||
| Estriol (E3) | |||
| 4,590,000 (max) | log Dow: 2.53 | ||
| 473,067 (mean) | CAS: 50-27-1 | ||
| t1/2: 60 days | Cbiosolids: 5.80 (min) | ||
|
232 (max) | ||
| 38.85 (mean) | |||
| Cholesterol | t1/2: 38 days | ||
| log Dow: 9.62 |
|
||
| CAS: 57-88-5 | 17-β-Ethinylestradiol(EE2) | ||
| Cbiosolids: 2,340(min) | |||
| log Dow: 4.15 | |||
| 5,390,000 (max) | CAS: 57-91-0 | ||
| 727,338 (mean) | Cbiosolids: 12.80 (min) | ||
| t1/2: 60 days | 61.90 (max) | ||
|
22.53 (mean) | ||
| t1/2: 38 days | |||
| Epicoprostanol |
|
||
| log Dow: 10.06 | Androstenedione | ||
| CAS: 516-92-7 | log Dow: 2.72 | ||
| Cbiosolids: 868 (min) | CAS: 63-05-8 | ||
| 6,030,000 (max) | Cbiosolids: 57.70 (min) | ||
| 818,673 (mean) | 1520 (max) | ||
| t1/2: 60 days | 328.44 (mean) | ||
| t1/2: 60 days |