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Suspensions of a latosol with a clay concentration of 30 g kg-1 were prepared from electrodialyzed clay fractions,, less than 2 um in diameter, five nitrate solutions with a concentration of 1 X 10-4/z mol L-1, where z is the valence, and five sodium salt solutions with a concentration of 3.3 X 10-5/z mol L-1. The direct current (DC) electrical conductivities (ECs) of the colloidal suspensions were measured at a constant temperature of 25C, using a newly established method of measuring the Wien effect in soil suspensions at field strengths ranging from 13.5 to 150 kV cm-1, to determine their electrical conductivity-field strength relationships and to infer the order of the bonding strength (retaining force) between soil particles and various ions. The measurements with the latosol suspensions in NaNO3, KNO3, Ca(NO3)2, Mg(NO3)2 and Zn(NO3)2 solutions resulted in increments of the suspension ECs, AECs, of 7.9, 5.0, 7.1, 7.0 and 5.8 uS cm-1, respectively, when the applied field strength increased from 14.5
Suspensions of a latosol with a clay concentration of 30 g kg-1 were prepared from electrodialyzed clay fractions ,, less than 2 um in diameter, five nitrate solutions with a concentration of 1 X 10-4 / z mol L-1, where z is the valence, and five sodium salt solutions with a concentration of 3.3 X 10-5 / z mol L-1. The direct current (DC) electrical conductivities (ECs) of the colloidal suspensions were measured at a constant temperature of 25C, using a newly established method of measuring the Wien effect in soil suspensions at field strengths ranging from 13.5 to 150 kV cm-1, to determine their electrical conductivity-field strength relationships and to infer the order of the bonding strength (retaining force) between soil particles The measurements with the latosol suspensions in NaNO3, KNO3, Ca (NO3) 2, Mg (NO3) 2 and Zn (NO3) 2 solutions resulted in increments of the suspension ECs, 7.0 and 5.8 uS cm-1, respectively, when the applied field strength i ncreased from 14.5