DS/ISO 17867:2020

Bestemmelse af partikelstørrelsesfordeling – SAXS-metode


Status:
Gældende
Type:
Standard
Sprog:
Engelsk
Kategori:
Pris fra:
kr. 555,00

Beskrivelse

This document specifies a method for the application of small-angle X-ray scattering (SAXS) to the estimation of mean particle sizes in the 1 nm to 100 nm size range. It is applicable in dilute dispersions where the interaction and scattering effects between the particles are negligible. This document describes several data evaluation methods: the Guinier approximation, model-based data fitting, Monte-Carlo?based data fitting, the indirect Fourier transform method and the expectation maximization method. The most appropriate evaluation method is intended to be selected by the analyst and stated clearly in the report. While the Guinier approximation only provides an estimate for the mean particle diameter, the other methods also give insight in the particle size distribution.


Antal sider: 36

Udgivet: 2020-10-14

Godkendelsesdato: 2020-10-12

Internationale relationer : ISO 17867:2020 IDT

ICS: 19.120 - Analyse af partikelstørrelse. Sigtning.

Varenummer: M324189


Udvalg og komiteer

Komite

  • ISO/TC 24/SC 4
  • ISO/TC 24/SC 4/WG 10

Dansk udvalg

DS/S-438