Mineralization of zinc pyrithione 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 |
5.0 ± 1.2 |
65.2 ± 1.4 |
8.3 ± 0.22 |
13.2 ± 0.52 |
2.6 ± 0.17 |
1.0 ± 0.13 |
95.3 |
LS, aerobic |
2.8 ± 0.06 |
31.5 ± 0.66 |
5.3 ± 0.10 |
32.7 ± 1.0 |
9.4 ± 0.16 |
7.0 ± 0.39 |
88.7 |
LS, anaerobic |
3.7 ± 0.59 A |
18.8 ± 4.0 |
2.6 ± 0.15 |
13.7 ± 1.6 |
5.3 ± 0.88 |
33.4 ± 1.9 |
77.5 |
A |
hereof 0.11% as 14CH4 |
B |
extraction with HCl |
C |
extraction with NaOH |
D |
incineration of extracted sediment |
SD |
standard deviations between four replicates |
|