The colorimetric determination of sodium in vegetation

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Authors

Louw, J.G.

Journal Title

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Volume Title

Publisher

Union of South Africa : Dept. of Agriculture

Abstract

(1) A revision of the method by Malan and Van der Lingen for the colorimetric determination of sodium in vegetation is described in detail. (2) Evidence is presented to show that:- (a) .04-0.1 mgm. Na can be determined with reasonable accuracy in the presence of 0.1 mgm. P; when 0.1- 0.2 mgm. Na is to be determined 0.2 mgm. P, and when 0.2-0.8 mgm . Na, up to 0.4 mgm. P may be present. (b) The interference of K is dependent upon absolute concentration and temperature; working at ordinary laboratory temperature ( ± 25° C.) not more than 0.8 mgm. K should be present in the aliquot for a determination. (c) At 26° C. precipitation is complete within experimental error in 30 minutes.

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The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.

Keywords

Veterinary medicine, South Africa, Veterinary reports

Sustainable Development Goals

Citation

Louw, JG 1933, 'The colorimetric determination of sodium in vegetation', Onderstepoort Journal of Veterinary Science and Animal Industry, vol. 1, no. 2 , pp. 425-435.