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ON THE ESTIMATION AND SEPARATION OF MANGANESE.
[Footnote: Read before the American Chemical Society, Dec. 16, 1881]
By NELSON H. DARTON.
The element manganese having many peculiarities in its reactions
with the other elements, is now extensively used in the arts, its
combinations entering into and are used in many of the important
processes; it is consequently often brought before the chemist in his
analysis, and has to be determined in most cases with considerable
accuracy. Many methods have been proposed for this, all of them of more
or less value; those yielding the best results, however, requiring a
considerable length of time for their execution, and involving so large
an amount of manipulatory skill as to render them fairly impracticable
to a chemist at all pressed for time, and receiving but a mere trifle
for the results.
As I have had to make numerous estimations of manganese in various
compounds, as a public analyst, I have been induced to investigate the
volumetric methods at present in use to find their comparative values,
and if possible to work out a new one, setting aside one or more of the
difficulties met with in the use of the older ones.
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