Table 2.
Percentage of boats with mean and median values (6–8 measurements) of copper on plastic boat hulls
| Country and no. of sites | Mean values of copper % boats in different ranges |
Median values of copper % boats in different ranges |
||||
|---|---|---|---|---|---|---|
| < 100 μg Cu/cm2 St dev in brackets |
> 4000 μg Cu/cm2 St dev in brackets |
> 8000 μg Cu/cm2 St dev in brackets |
< 100 μg Cu/cm2 St dev in brackets |
> 4000 μg Cu/cm2 St dev in brackets |
> 8000 μg Cu/cm2 St dev in brackets |
|
| Denmark 1 (n = 25) | 0 | 88 | 56 | 0 | 92 | 56 |
| Denmark 2 (n = 28) | 0 | 75 | 39 | 0 | 79 | 39 |
| Denmark 3 (n = 28) | 0 | 61 | 57 | 4 | 64 | 54 |
| Mean DK (n = 3) | 0 | 75 (14) | 51 (10) | 1.3 (2.3) | 78 (14) | 50 (9.3) |
| Finland 1 (n = 52) | 8 | 73 | 48 | 10 | 69 | 48 |
| Finland 2 (n = 53) | 0 | 79 | 66 | 0 | 79 | 62 |
| Finland 3 (n = 51) | 0 | 75 | 53 | 2 | 71 | 51 |
| Mean FI (n = 3) | 3 (4.6) | 76 (3.2) | 56 (9.3) | 4 (5.3) | 73 (5.4) | 54 (7.5) |
| Germany 1 (n = 50) | 0 | 88 | 68 | 0 | 88 | 66 |
| Germany 2 (n = 90) | 0 | 89 | 54 | 0 | 89 | 56 |
| Mean DE (n = 2) | 0 | 88 (0.6) | 61 (9.6) | 0 | 88 (0.6) | 61 (7.4) |
| SE, freshwater (n = 202) | 29 | 18 | 6 | 29 | 18 | 6 |
| SE, brackish water (n = 268) | 11 | 37 | 17 | 11 | 37 | 17 |
| SE, marine water (n = 202) | 1 | 72 | 55 | 1 | 72 | 55 |
| Mean Sweden (n = 3) | 14 (14) | 42 (27) | 26 (26) | 14 (14) | 42 (27) | 26 (26) |
Data for Sweden are from Ytreberg et al. 2016 and based on a single measurement per boat
LOQ = 100 μg Cu/cm2
The mean values are presented in italic with the standard deviation in brackets