本文件描述了一种测定颗粒数大小分布的标准方法 环境空气的大小范围为10纳米至800纳米，总浓度约为 105cm-3，时间分辨率为几分钟。标准方法基于迁移率粒子 粒度分光计（MPSS）与双极扩散充电器和冷凝粒子计数器一起使用 （CPC）作为探测器。本文件描述了性能特征和最低要求 所用仪器和设备的要求，并说明取样、操作和数据 处理和QA/QC程序，包括校准。交叉引用:ISO 27891:2015CEN/TS 16976:2016ISO 15900ISO 3696:1987ISO/IEC指南98-3:2008 Ed 1购买本文件时提供的所有当前修订版均包含在购买本文件中。

This document describes a standard method for determining particle number size distributions in ambient air in the size range from 10 nm to 800 nm at total concentrations up to approximately 105cm-3with a time resolution of a few minutes. The standard method is based on a Mobility Particle Size Spectrometer (MPSS) used with a bipolar diffusion charger and a Condensation Particle Counter (CPC) as the detector. The document describes the performance characteristics and minimum requirements of the instruments and equipment to be used, and describes sampling, operation, data processing and QA/QC procedures, including calibration.Cross References:ISO 27891:2015CEN/TS 16976:2016ISO 15900ISO 3696:1987ISO/IEC GUIDE 98-3:2008 Ed 1All current amendments available at time of purchase are included with the purchase of this document.