International Standard
ISO 6374:1981
Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of phosphorus content — Atomic absorption spectrometric method after extraction
Reference number
ISO 6374:1981
ISO 6374:1981
Edición 1
1981-10
1981-10
© ISO 2024
International Standard
p
ISO 6374:1981
12706
No disponible en español
Publicado
(Edición 1, 1981)
Esta norma se revisó y confirmó por última vez en 2024.
Por lo tanto, esta versión es la actual.
Resumen
Specifies a method based on the fusion of a test portion with sodium carbonate and boric acid and dissolution in perchloric acid solution, followed by formation of the ammonium molybdophosphate complex and extraction of the complex with isobutyl acetate. The solution is absorbed into an acetylene/dinitrogen monoxide flame and the molybdenum, and hence the phosphorus, is determined by measuring the absorbance of the 379,8 nm line emitted by a molybdenum hollow-cathode lamp.
Informaciones generales
-
Estado: PublicadoFecha de publicación: 1981-10Etapa: Norma Internacional confirmada [90.93]
-
Edición: 1Número de páginas: 4
-
Comité Técnico :ISO/TC 226ICS :71.060.50
- RSS actualizaciones
Ciclo de vida
Got a question?
Check out our FAQs
Customer care
+41 22 749 08 88
Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)