Mineralization of DCOI in sediment and seawater under
aerobic or anaerobic conditions. Distribution and recovery of 14C after an
incubation of 42 days (aerobic test) or 56 days (anaerobic test).
Retrieved 14C
activity (% of added 14C ± SD) |
Sediment/
test type |
CO2 |
Water phase |
Sediment, hydro-
lyzable compoundsB |
Sediment,
fulvic acidC |
Sediment,
humic acidC |
Sediment, humic and clay mineralsD |
Total retrieval |
| SS, aerobic |
24.3 ± 0.58 |
19.1 ± 1.9 |
- |
- |
- |
- |
70.0E |
| LS, aerobic |
12.9 ± 0.52 |
2.0 ± 0.35 |
1.4 ± 0.35 |
14.0 ± 0.92 |
23.8 ± 0.92 |
24.2 ± 2.4 |
78.3 |
| LS, anaerobic |
14.5 ± 0.19 A |
0.9 ± 0.12 |
1.0 ± 0.10 |
5.0 ± 0.16 |
14.7 ± 0.46 |
30.3 ± 1.4 |
66.4 |
| A |
hereof 0.06% as 14CH4 |
| B |
extraction with HCl |
| C |
extraction with NaOH |
| D |
incineration of extracted sediment |
| E |
incineration of non-extracted sediment |
| SD |
standard deviations between four replicates |
| - |
not determined |
|