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The Analytical Separation of Iron and Aluminium by Henry Erdmann Radasch, 1897

The Analytical Separation of Iron and Aluminium by Henry Erdmann Radasch, 1897, Page 3

The Analytical Separation of Iron and Aluminium
Of all the methods given, up to the last year, we have only a few that may be said to be both satisfactory and speedy. By satisfactory is meant; directness of working and accuracy. It is true that some of the methods are quite direct but still they lack directness and speed. Within certain limits accuracy may be sacrificed to directness and speed.  The round about methods give opportunities for loss of material and some of the more direct ones give opportunities for an increase of material, i.e., through the solution of the [illegible] of the [?] used by the reagents. Although these losses may be avoided to a greater or less extent, they still occur, at times, in spite of the most careful manipulation.
The methods have been grouped under four classes or heads and this classification will be used in the discussion. The heads are as follows
I.
The methods depending upon a difference of solubility of the precipitates in

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The Analytical Separation of Iron and Aluminium Of all the methods given, up to the last year, we have only a few that may be said to be both satisfactory and speedy. By satisfactory is meant; directness of working and accuracy. It is true that some of the methods are quite direct but still they lack directness and speed. Within certain limits accuracy may be sacrificed to directness and speed. The round about methods give opportunities for loss of material and some of the more direct ones give opportunities for an increase of material, i.e., through the solution of the [illegible] of the [?] used by the reagents. Although these losses may be avoided to a greater or less extent, they still occur, at times, in spite of the most careful manipulation. The methods have been grouped under four classes or heads and this classification will be used in the discussion. The heads are as follows I. The methods depending upon a difference of solubility of the precipitates in