"The electrolytic determination of lead as lead dioxide is a very desirable method, due to its simplicity, accuracy, and the small amount of the analyst's time required. The electrolytic method functions when both large and small amounts of lead are present. The method depends upon the fact that from a nitric acid solution the lead is plated upon the anode as lead dioxide; from the lead dioxide deposit the percentage of lead may be calculated.
An electrolytic method, for determining the lead in samples containing from 5 to 150 mg. of lead, was described in a paper by Schrenk and Delano.
Ind. and Eng. Chem. Anal. Ed. 3, 1931
In another paper by Schrenk and Day, the electrolytic method was extended so that it was applicable to samples which contained only two milligrams of lead.
In the paper by Schrenk and Delano, it was shown that certain elements interfered. These elements must be absent, or present only in non-interfering quantities before the electrolytic method can be used. These facts limit the size of the sample of ore that may be taken for analysis, and also determine when a chemical separation must precede the electrolytic deposition of lead dioxide. In order to extend the application of this method to alloys containing lead and interfering impurities, the present investigation was undertaken"--Introduction, pages 1-2.
Schrenk, Walter T.
M.S. in Chemistry
Missouri School of Mines and Metallurgy
iii, 44 pages
© 1933 John Shaw Sabine, All rights reserved.
Thesis - Open Access
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Sabine, John Shaw, "A study of methods for separating the elements that interfere in the electrolytic deposition of lead as lead oxide" (1933). Masters Theses. 2909.