水田土壌の膠質化学的研究

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Authors measured the ζ-Potential of the soil colloids in the following four states by the electro phoresis, using the normal and aged paddy soils. A) Soil colloid, made from the air dry soils. B) Soil colloid in the reductive state. C) Soil colloid in the unstable oxydative state. D) Soil colloid in the oxydative state. measured results are as follows. i) Every sample were negative colloids. ii) In B state electro phoretic velocity of the normal paddy soils are larger than that of the aged paddy soils, and Electrossmotic velocity of water against the glass the former become very small, but does not in later. iii) The Order of the electrophoretic velocity of every soils are As follbows. (C)>(A)>(D)>(B) iv) Ferrous ion were detected in the (B) state soil solutions, but in the (A)(C)(D)states.
社団法人日本土壌肥料学会の論文
1950-03-31