通过粒子追踪分析（PTA）确定粒度分布和数量浓度

[中文适用范围]： 本文件规定了在静态（无流动）条件下确定液体分散体（固体颗粒、液滴或悬浮在液体中的气泡）中基于数量的颗粒尺寸分布和数量浓度的粒子跟踪分析 (PTA) 方法。本文件涵盖两种跟踪方案。 — 针对较小颗粒的布朗运动跟踪。 — 针对较大颗粒的重力坠落跟踪。本文件概述了 PTA 方法的理论和基本原理，以及其在尺寸评估和数量浓度测量方面的局限性和优势。它还描述了常用的仪器配置和测量程序以及系统资格和数据报告。 [外文原描述]： This document specifies the particle tracking analysis (PTA) method under static (no flow) conditions for the determination of the number–based particle size distribution and the number concentration in liquid dispersions (solid particles, liquid droplets or bubbles suspended in liquids). This document covers two tracking regimes. — Brownian motion tracking for smaller particles. — Gravitational fall tracking for larger particles. This document outlines the theory and basic principles of the PTA method along with its limitations and advantages for both size evaluation and number concentration measurements. It also describes commonly used instrument configurations and measurement procedures as well as system qualifications and data reporting.