The Elements of Blowpipe Analysis

by Frederick Hutton Getman

In order to examine a substance before the blowpipe to determine the presence or absence of certain elements, it becomes necessary to arrange a systematic method. As with all branches of chemical work, one's success is largely dependent upon neatness of manipulation and carefulness of observation.

The following order of observation is essentially that given by Berzelius:—

1. Examination on charcoal by itself.

2. Examination on charcoal with Na₂CO₃.

3. Examination in ignition tube with Na₂CO₃ and charcoal.

4. Examination on platinum wire.

5. Examination in borax bead.

6. Examination with Co(NO₃)₂.

After having examined a body in these six different ways, we shall be able to say what are its principal constituents.

Before describing the method of carrying out these six different operations, it will be necessary to give a few definitions of terms which we shall have frequent occasion to employ.