标准摘要
[中文适用范围]： 本文件规定了使用电感耦合等离子体质谱法（ICP-MS）测定各种类型水样中镍-59和镍-63比活度浓度的方法。利用当前可用的 ICP-MS，该测试方法可以测量 30 mBq·l⁻¹ 的 59Ni 比活度浓度和 200 Bq·l⁻¹ 的 63Ni 比活度浓度。这些值可以通过 1.0 l 的样品体积实现。通过稀释样品或使用较小的样品 aliquots 或两者兼用，可以测量更高比活度浓度。注意这些性能指标完全取决于个别实验室的测定方案；特别是检测限受稳定镍含量的影响。应用范围取决于水中的溶解物质和测定设备的性能特性（背景计数率和计数效率）。本实验室负责确保此测试方法适用于待测的水样。 [外文原描述]： 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 inductively coupled plasma mass spectrometry (ICP-MS). Using currently available ICP-MS, this test method can measure 59 Ni activity concentrations of 300 mBq⋅l −1 and 63 Ni activity concentrations of 200 Bq⋅l −1 . These values can be achieved with a sample volume of 1,0 l. Higher activity concentrations can be measured by either diluting the sample or using smaller sample aliquots or both. NOTE These performance indicators are wholly dependent on the measurement regimes in individual laboratories; in particular, the detection limit is influenced by amount of stable nickel 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 counting efficiency). It is the laboratory’s responsibility to ensure the suitability of this test method for the water samples tested.
英文名称Water quality — Nickel-59 and nickel-63 — Part 2: Test method using ICP-MS