简介:2.1 A mixture of nitric acid and the material to be analyzed is refluxed
in a covered Griffin beaker. This step is repeated with additional portions of
nitric acid until the digestate is light in color or until its col简介:2.1 A mixture of nitric acid and the material to be analyzed is refluxed
in a covered Griffin beaker. This step is repeated with additional portions of
nitric acid until the digestate is light in color or until its color has
stabilized. After the digestate has been brought to a low volume, it is refluxed
with hydrochloric acid and brought up to volume. If sample should go to dryness,
it must be discarded and the sample reprepared.详细>