For sample digestion, and dilution, HNO3 is the preferred choice, as it produces the least new interferences in the plasma, but it is not always ideal, since some sample matrices e.g. silicates won’t digest with this acid. In such cases, HF can be used, but then inert sample introduction systems must be used and special care must be taken while handling this hazardous acid. Dilute (2%) HNO is the most preferred acid for 3 sample dilution in ICP-MS, as polyatomic ions are not increased and nitric acid is readily available in a high purity form.
For sample digestion, and dilution, HNO3 is the preferred choice, as it produces the least new interferences in the plasma, but it is not always ideal, since some sample matrices e.g. silicates won’t digest with this acid. In such cases, HF can be used, but then inert sample introduction systems must be used and special care must be taken while handling this hazardous acid. Dilute (2%) HNO3 is the most preferred acid for
sample dilution in ICP-MS, as polyatomic ions are not increased and nitric acid is readily available in a high purity form.
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