Of paramount importance in the field of nanotechnology is the ability to measure reliably the properties of nanomaterials, especially their size. In general, just an estimate of size is not sufficient: a quantitative indication of the quality of the estimate in the form of an assessment of its uncertainty is necessary, as well. For example, standard ISO/IEC 17025:2017 ( General Requirements for the Competence of Testing and Calibration Laboratories ) stipulates that appropriate methods and procedures shall be used for laboratory activities and for the analysis of data, including the identification and quantification of all contributions to the measurement uncertainties. In order to facilite compliance with requirements such as these, we propose a procedure to establish an uncertainty budget for the measurement of the size of monodispersed nanoparticles in liquid suspension by dynamic light scattering (DLS). We take as a reference the general approach proposed in the ...

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动态光散射法测量纳米粒度的不确定性评估

在纳米技术领域中最重要的是可靠地测量纳米材料的性能，尤其是其尺寸的能力。通常，仅对大小进行估计是不够的：还需要以不确定性评估的形式对指示的质量进行量化指示。例如，标准ISO / IEC 17025：2017（《测试和校准实验室能力的一般要求》）规定，应使用适当的方法和程序进行实验室活动和数据分析，包括对所有与测量不确定度。为了促进遵守这些要求，我们提出了一种程序，该程序为通过动态光散射（DLS）测量液体悬浮液中单分散纳米颗粒的尺寸建立不确定性预算。我们以...中提出的一般方法作为参考。