[Front page] [Contents] [Printing instructions] [Back]

Ecotoxocicological assessment of antifouling biocides and non-biocidal antifouling paints

 

 
Table B2.3
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