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Electrodialysis Compared with the Neubauer Method for Determining Mineral Nutrient Deficiencies in Soils 1
Author(s) -
Brewer P. H.,
Rankin R. B.
Publication year - 1933
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1933.00021962002500060007x
Subject(s) - citation , mineral exploration , library science , chemistry , agricultural science , computer science , mathematics , agricultural economics , economics , environmental science , geology , geochemistry
In the literature are found several papers relative to the use of electrodialysis for extracting a portion of the cations from the soil solution. To mention only a few of thes6, one might refer to the work of Bradfield (I),8 Clark, Humfield, and Albens (2), Mattson and L6ddesol.(4). The greater part of the work has been don6 determine the total amount of electrodialyzable bases in the soil solution without subsequent determination of the amounts of the individual cations so extracted. McGeorge (9), on the other hand, has reported that the process of electrodia~ysis is an excellent means of dissolving the active or available forms of phosphate from calcareous soils. The apparatus used by McGeorge was essentially that of Mattson, parchment paper being used as membranes at both cathode and anode. The somewhat similar three-chamber Braclfield cell was used in the work reported in this paper, although the anode membrane of parchment paper was replaced by one of collodion impregnated with hemoglobin, as described by Bradfield and Bradfield (5). Since the Neubauer method for determining amounts of available phosphorus and potassium which soils contain;, as described by Thornton (6), has come to be favorably regarded by certain workers, it was proposed to compare results secured by the Neubauer method upon certain soils with those secured by limited electrodialysis upon the same. soils. APPARATUS