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 beta-activity in a Geiger counting assembly. Covers non-volatile beta-active radionuclides with maximum beta energies higher than 0,3 MeV. Applies to the analysis of raw and potable waters.
WITHDRAWN
ISO 9697:1992
95.99
Withdrawal of Standard
Oct 30, 2008
WITHDRAWN
ISO 9697:2008
Water quality — Measurement of gross beta activity in non-saline water
95.99 Withdrawal of Standard
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