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Basic slags and mineral phosphates

Published online by Cambridge University Press:  27 March 2009

Ernest Vanstone
Ernest Vanstone
Affiliation:
Seale-Hayne Agricultural College, Newton Abbot.
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Extract

(1) The relationship between phosphate soluble in 2 per cent, citric acid and total phosphate present has been investigated in the following cases:

(a) Phosphates of known composition.

(b) Basic Slags.

(c) Mineral Phosphates.

(2) The relationship is best shown graphically and in nearly all the above cases is a straight line passing through the origin.

For each of three basic slags of widely differing citric solubility, the graphis a straight line showing that citric solubility is a definite constant, independent of the weight taken in the test, when allowance is made for a small constant error in the determination.

(3) The ratio soluble phosphate/total phosphate in the case of the mineral phosphates Gafsa, Ephos, Nauru, and a West Indian phosphate, depends on the weight taken in the test, the graphs are not straight lines.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 15 , Issue 1 , January 1925 , pp. 36 - 46
Copyright
Copyright © Cambridge University Press 1925

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References

REFERENCES

(1)Ramsay, A. A.Journ. Agric. Sci. 8, 3, 277.Google Scholar
(2)Scott-Robertson, G.Basic Slags and Rock Phosphates. (Cambridge University Press.)Google Scholar
(3)Oldershaw, A. W.Journ. Min. Agric. 30, 4, 308.Google Scholar