Table 5.

The ambient ammonia concentration and 15N-ammonia in the head compartment when the tail of P. schlosseri was exposed for 6 h to 5, 10 or 20 mmol l-1 15NH4Cl in the tail compartment

Head compartment
Condition Tail compartment [Ambient ammonia] (mmol l-1)15N-ammonia (% atom excess)
pH[NH4Cl] (mmol l-1)0 h6 h0 h6 h
7.050.010.5300
100.021.9900
200.022.34054
8.05ND0.56026
10ND2.00060
20ND2.32075
  • ND, not detectable.