ISO 2366:1974
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ISO 2366:1974
7205
No disponible en español

Estado : Publicado (En proceso de revisión)

Esta norma se revisó y confirmó por última vez en 2022. Por lo tanto, esta versión es la actual.
es
Formato Idioma
std 1 42 PDF
std 2 42 Papel
  • CHF42
Convertir Franco suizo (CHF) a tu moneda

Resumen

The methods are applicable as alternatives to products for which the molar ratio NaF/AlF3 is equal to about 3. The principle of the flame emission method consists in atomization of the test solution in a flame of oxygen/hydrogen and determination by measurement of the intensity of the radiation at 589 nm. The principle of the flame atomic absorption method is based on atomization in an air/acetylene flame and measuremnt of the absorption of the 589 nm line emitted by a sodium hollow-cathode lamp. The preparation of the test solution is carried out by dissolution of a test portion in hydrochloric acid and water after attack by concentreted sulphuric acid.

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Informaciones generales

  •  : Publicado
     : 1974-11
    : Norma Internacional confirmada [90.93]
  •  : 1
     : 4
  • ISO/TC 226
    71.060.50 
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