TERMIUM Plus®

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MATRIX INTERFERENCE [1 record]

Record 1 1977-06-07

English

Subject field(s)
  • Chemistry
CONT

Matrix interference or bulk interference is caused by either a change in viscosity of the solution or by a large excess of extraneous ions... the absorption of a given concentration of an element in organic solvents can be as much as four to five times higher than the aqueous solution of the same concentration aspirated into the flame. Many workers have also suggested matching the standards and samples with materials that are present in excess of 1 %.

French

Domaine(s)
  • Chimie
DEF

Ces interactions interviennent pour des concentrations en corps dissous supérieurs à 2 % et lorsque la viscosité est différente de celle des étalons. Elles entraînent un effet «scattering», une baisse du nombre d'atomes neutres produits par suite d'une diminution du débit d'aspiration et un encrassement des brûleurs avec risques d'explosion associés. Le moyen simple d'éviter ces interactions est de diluer les solutions ou d'utiliser des solvants organiques.

Spanish

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