BS ISO 23655-1:2022
Water quality. Nickel-59 and nickel-63 - Test method using liquid scintillation counting
- Standard No.
- BS ISO 23655-1:2022
- Release Date
- 2022
- Published By
- British Standards Institution (BSI)
- Latest
- BS ISO 23655-1:2022
- Scope
- 1 Scope This document specifies the determination of nickel-59 and nickel-63 ( 59 Ni and 63 Ni) activity concentration in samples of all types of water using liquid scintillation counting (LSC). Using currently available liquid scintillation counters, this test method can measure 59 Ni activity concentrations of 50 mBq·l −1 and 63 Ni activity concentrations of 20 mBq·l −1 with a counting time of 200 min and a sample volume of 1,5 l. NOTE These performance indicators are wholly dependent on the measurement regimes in individual laboratories; in particular, the detection limits for 59 Ni are entirely dependent on the levels of 63 Ni that can be present. The range of application depends on the amount of dissolved material in the water and on the performance characteristics of the measurement equipment (background count rate and detection efficiency). It is the laboratory’s responsibility to ensure the suitability of this test method for the water samples tested.
BS ISO 23655-1:2022 history
- 2022 BS ISO 23655-1:2022 Water quality. Nickel-59 and nickel-63 - Test method using liquid scintillation counting
