Samples Containing Lithium, Sodium, Potassium, Rubidium or Cesium

Water and Acid Soluble Material

This category includes oxides/hydroxides, salts, brines, saline residues, mineral waters, carbonates, etc.

Dissolve the sample in water using a slight excess of nitric acid and dilute to a specified volume. In the case of alkali carbonates, the solution should be boiled after acidification to expel carbon dioxide before making to volume. The presence dissolved carbon dioxide or other gases can cause poor precision due to gas bubble formation in some nebulizers during sample introduction.

Was this helpful?  Tell a Friend | Let us know