2010 Volume 52 Issue 2 Pages 195-204
The study investigated the effect of the leakage of an inner electrode solution (3.3M KCl) for conductivity in the measurement of in situ physico-chemical parameter of groundwater without pumping. The results showed that a conductivity of groundwater in low-permeability layer (below the 10-7m/s) was sensitive to the leakage of an inner electrode solution and the value increased continuously during monitoring campaign. In case where the conductivity of groundwater in the low permeability environment or stagnation zone increased continuously during the measurement of in situ physico-chemical parameter of groundwater without pumping, the inspection is recommendation for accurate conductivity.