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The Colloidal Gold Reaction with Cerebrospinal Fluid

Published online by Cambridge University Press:  19 February 2018

Thomas Houston  and
Edward Armstrong
Thomas Houston
Affiliation:
Laboratory of the Royal Victoria Hospital, Belfast
Edward Armstrong
Affiliation:
Laboratory of the Royal Victoria Hospital, Belfast
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Extract

The history of the colloidal gold reaction is one of great interest. In 1901 Zsigmondy used the precipitation of colloidal gold by proteins as a means of determining quantitatively their amount in given solutions. He discovered that solutions of protein give protection to colloidal solutions of gold up to a certain point, and he determined the so-called goldzahl for various protein substances, by which is meant the number of milligrammes of protein employed, just sufficient to prevent the precipitation of 10 c.c. of colloidal gold of a percentage of .0053 in the presence of 1 c.c. of 10 per cent. sodium chloride. By this method it can be determined whether a given protein is absolutely pure, or, granted that this is the case, how much of the protein is present in a given solution.

Type
Part I.—Original Articles
Information
Journal of Mental Science , Volume 70 , Issue 291 , October 1924 , pp. 572 - 577
Copyright
Copyright © Royal College of Psychiatrists, 1924 

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References

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