חיפוש מתקדם
Pedosphere
Chengbao, L., Institute of Soil Science, Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008, China
Friedman, S.P., Inst. of Soil, Water,/Environ. Sci., Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Anzhen, Z., Institute of Soil Science, Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008, China
The electrical conductivities (ECs) of suspensions containing 25 and 30 g kg-1 solids prepared from the electrodialyzed clay fraction (< 2 μm in diameter) of latosol, yellow-brown soil, and black soil, dispersed in various nitrate solutions having concentrations of 1 × 10-4/z mol L-1, where z is the valence, and in distilled water, were measured at field strengths ranging from 14 kV cm-1 to 210 kV cm -1. On the basis of analyses of the charge density and exchangeable ion composition on the surfaces of soil particles in the suspensions, and of the characters of the EC-field strength curves of the various suspensions, it was inferred that the increment of EC (ΔEC) and/or relative electrical conductivity (REC) can indicate the bonding strength between cations and soil particles. The bonding strengths of various cations with the soils diminished in the order: K+ > Zn2+ > Mg2+ = Ca 2+ > Na+ for latosol, Ca2+ > Zn 2+ > Mg2+ = K+ > Na+ for yellow-brown soil, and Zn2+ ≥ Ca2+ ≥ Mg 2+ > K+ > Na+ for black soil.
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
אודות
תנאי שימוש
Interactions of cations with electrodialyzed clay fraction of soils as inferred from Wien effect in soil suspensions
13
Chengbao, L., Institute of Soil Science, Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008, China
Friedman, S.P., Inst. of Soil, Water,/Environ. Sci., Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Anzhen, Z., Institute of Soil Science, Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008, China
Interactions of cations with electrodialyzed clay fraction of soils as inferred from Wien effect in soil suspensions
The electrical conductivities (ECs) of suspensions containing 25 and 30 g kg-1 solids prepared from the electrodialyzed clay fraction (< 2 μm in diameter) of latosol, yellow-brown soil, and black soil, dispersed in various nitrate solutions having concentrations of 1 × 10-4/z mol L-1, where z is the valence, and in distilled water, were measured at field strengths ranging from 14 kV cm-1 to 210 kV cm -1. On the basis of analyses of the charge density and exchangeable ion composition on the surfaces of soil particles in the suspensions, and of the characters of the EC-field strength curves of the various suspensions, it was inferred that the increment of EC (ΔEC) and/or relative electrical conductivity (REC) can indicate the bonding strength between cations and soil particles. The bonding strengths of various cations with the soils diminished in the order: K+ > Zn2+ > Mg2+ = Ca 2+ > Na+ for latosol, Ca2+ > Zn 2+ > Mg2+ = K+ > Na+ for yellow-brown soil, and Zn2+ ≥ Ca2+ ≥ Mg 2+ > K+ > Na+ for black soil.
Scientific Publication
You may also be interested in