Studies in mineral metabolism XXVII. Modifications of the methods used at Onderstepoort for the determination of (a) magnesium and calcium; (b) potassium in grass-extracts

Studies in mineral metabolism XXVII. Modifications of the methods used at Onderstepoort for the determination of (a) magnesium and calcium; (b) potassium in grass-extracts

Holzapfel, C.R.; Union of South Africa. Dept. of Agriculture; Du Toit, P.J.
URI: http://hdl.handle.net/2263/48362
Date: 1934

Abstract:

A modified method for determining calcium and magnesium in grass-extracts is described, and the effect of iron on the original magnesium determination illustrated. Also, a modification of the washing mixture substituting ammonia for sodium hydroxide, for washing the precipitate of magnesium ammonium phosphate was found necessary.

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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.

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