ISO/TC 147/SC 3
| Projekta Nr. | ISO 23655-1:2022 |
|---|---|
| Nosaukums | <p>This document specifies the determination of nickel-59 and nickel-63 (<sup>59</sup>Ni and <sup>63</sup>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 <sup>59</sup>Ni activity concentrations of 50 mBq·l<sup>−1</sup> and <sup>63</sup>Ni activity concentrations of 20 mBq·l<sup>−1</sup> with a counting time of 200 min and a sample volume of 1,5 l.</p> <p>NOTE These performance indicators are wholly dependent on the measurement regimes in individual laboratories; in particular, the detection limits for <sup>59</sup>Ni are entirely dependent on the levels of <sup>63</sup>Ni that can be present.</p> <p>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).</p> <p>It is the laboratory’s responsibility to ensure the suitability of this test method for the water samples tested.</p> |
| Reģistrācijas numurs (WIID) | 76551 |
| Darbības sfēra | <p>This document specifies the determination of nickel-59 and nickel-63 (<sup>59</sup>Ni and <sup>63</sup>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 <sup>59</sup>Ni activity concentrations of 50 mBq·l<sup>−1</sup> and <sup>63</sup>Ni activity concentrations of 20 mBq·l<sup>−1</sup> with a counting time of 200 min and a sample volume of 1,5 l.</p> <p>NOTE These performance indicators are wholly dependent on the measurement regimes in individual laboratories; in particular, the detection limits for <sup>59</sup>Ni are entirely dependent on the levels of <sup>63</sup>Ni that can be present.</p> <p>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).</p> <p>It is the laboratory’s responsibility to ensure the suitability of this test method for the water samples tested.</p> |
| Statuss | Standarts spēkā |
| ICS grupa | 13.060.60 17.240 |