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POLYDISPERSE COLLOIDAL SYSTEM [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 1998-11-16

English

Subject field(s)
  • Air Pollution
  • Pollutants
  • Chemistry
DEF

A colloidal system in which the suspended particles have various sizes and shapes.

OBS

As opposed to "monodisperse colloidal system."

French

Domaine(s)
  • Pollution de l'air
  • Agents de pollution
  • Chimie
OBS

Si l'on se réfère à la signification chimique, on peut dire qu'un aérosol est un système colloïdal dont le milieu de dispersion est un gaz, la phase dispersée pouvant être un solide (cas d'une fumée) ou un liquide (cas d'un brouillard), et l'on distingue entre les aérosols vrais mono-dispersés [...] et les aérosols polydispersés [...]. Les premiers sont homogènes et stables; les seconds sont instables et les dimensions des micelles sont hétérogènes.

Spanish

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