Chemistry Reference
In-Depth Information
sources allowed spreading of a corresponding number of single slicks that
were easily connected to one large slick after about 10 to 15 min.
cm /s
OLA
16
14
12
10
8
6
4
2
0
50 cm 100 cm 150 cm 200 cm
Spreading D istance from Source
cm /s
OLA / Ethanol
25
20
15
10
5
0
50 cm 100 cm 150 cm 200 cm
Spreading D istance from Source
cm /s
OLM E
12
10
8
6
4
2
0
50 cm 100 cm 150 cm 200 cm
Spreading D istance from Source
Fig. 4.
Spreading velocities >cm/s@ in dependence on the distance from the source
>cm@ for pure oleyl alcohol (OLA; top), a 75 mmol solution of OLA in ethanol
(OLA/ethanol; middle), and pure oleic acid methyl ester (OLME; bottom); note
the different ordinate scales
Furthermore, potential holes within the slick that may have been caused
by strong winds or waves are easily repaired by respreading of material
present as surplus material at the nearest point sources. While theoretically
about 2 mg of the slick material are needed per square metre, it is advis-
able to use a tenfold surplus because of these repair mechanisms. As a
consequence, 10 to 30 litres of the respective slick materials such as OLA
or OLME are sufficient to generate slick sizes of 0.5 to 2.5 km
2
. Care has
