Abstract
"A quick and accurate determination of Cadmium in Metallic Zinc by all ordinary chemical methods now in use, so far as the writer has been able to ascertain is at best only approximate. However, longer methods and very delicate ones for determining Cadmium are in use that are very accurate, but these methods are so long and so delicate that very few commercial laboratories care to use them. Now, it has been known for some time that Zinc and Cadmium do not form an alloy which when in the solid exist either as a solution or a compound. They do form a eutectic mixture at about 84 per cent Cadmium and 16 per cent Zinc, but this eutectic mixture will separate from both the metallic Cadmium and the metallic Zinc by fractional crystallization. Thus with zinc ingots or bars it has been noticed that when they were high in Cadmium a reddish black substance seemed to separate during freezing and come to the top of the bar or ingot. Therefore, many time the Zinc bars or ingots that were high in Cadmium could be identified before running a chemical analysis on them. This gave rise to the question "why couldn't Cadmium in Zinc be determined microscopically in some such manner as oxygen is determined in Copper?" Thus the reason for this thesis"--Introduction, Page 1.
Department(s)
Materials Science and Engineering
Degree Name
Professional Degree in Metallurgical Engineering
Publisher
Missouri School of Mines and Metallurgy
Publication Date
1919
Pagination
iii, 14 pages, 27 plates
Rights
© 1919 James P. Gill, All rights reserved.
Document Type
Thesis - Open Access
File Type
text
Language
English
Subject Headings
Mineralogy, Determinative -- MethodologyOres -- Sampling and estimation -- MethodologyCadmiumZinc
Thesis Number
T 407a
Print OCLC #
5950789
Electronic OCLC #
849902265
Recommended Citation
Gill, James Presley, "On the microscopic determination of cadmium in metallic zinc" (1919). Professional Degree Theses. 264.
https://scholarsmine.mst.edu/professional_theses/264