Samples Containing Strontium or Barium

Organic Matrices

These include a wide variety of materials including oil additives (Ba), petroleum matrices, coal, organic plant material, biological material, synthetic organics, etc. Samples can be digested with nitric/perchloric. For more detailed information about acid digestions of organics, please see the following article: Acid Digestions of Organic Samples.

It is also very acceptable to dry ash organic samples for Ba or Sr analysis in a Pt crucible and then bring the resulting oxides into solution using a sodium carbonate fusion or if Ba or Sr alone are sought, dissolution in dilute nitric or HCl. For more information, see the portion of our Trace Analysis Guide that discusses Ashing.

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