Environmental Engineering Reference
In-Depth Information
Fig. 7.5 Diagrams showing
side view
(a) and
top view
(b)
of mesocosm indicating the
spatial placement of the salt
bridge and the Pt electrodes
a
b
Deep Electrodes
10 cm
Salt Bridge
Shallow Electrodes
25 cm
the salt bridge. Then insert the salt bridge firmly into the pilot hole, being
careful that the agar does not slide out of the tube. The salt bridge should extend
about 5-10 cm above the top of the soil.
6.
Installing the shallow Pt electrodes
. Mark each of the other three electrodes at a
depth of 10 cm using colored tape. The three shallow Pt electrodes should be
placed in an equally spaced arrangement around the mesocosm, much like the
deep electrodes and following a similar installation procedure, but being
careful not to disturb the other Pt electrodes or the salt bridge and calomel
