The method is based on acidifying the sample to stabilize it, evaporation almost to dryness, conversion to the sulfate form and ignition at 350 °C, transfer of a portion of the residue to a planchette and counting alpha-activity in a alpha-particle detector. Covers non-volatile (at 350 °C) alpha-active radionuclides and can be extended to saline or mineralized waters, but with a reduced sensitivity. Applies to the analysis of raw and potable waters.
Status: WithdrawnPublication date: 1992-11
Edition: 1Number of pages: 11
Technical Committee: ISO/TC 147 Water quality
ISO 9696:1992Stage: 95.99
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