0 Stavka
Moj nalog
Telefon: (011) 7541-421, 3409-301, 3409-335, 6547-293, 3409-310
E-mail: Prodaja standarda: prodaja@iss.rs Seminari, obuke: iss-edukacija@iss.rs Informacije o standardima: infocentar@iss.rs
Stevana Brakusa 2, 11030 Beograd
Glavni meni

ISO 3697:1976

Sodium hydroxide for industrial use — Determination of calcium and magnesium contents — Flame atomic absorption method
1. 11. 1976.
95.99   Povučen   27. 5. 2002.

Опште информације

95.99     27. 5. 2002.

ISO

ISO/TC 47

Međunarodni standard

71.060.40  

francuski   engleski  

Kupovina

Povučen

Jezik na kome želite da primite dokument.

Apstrakt

Applicable to products having contents of more than 2.5 mg Ca/kg and 0.5 mg Mg/kg if an acetylene-air flame is used or 0.6 mg Ca/kg and 1.0 mg Mg/kg if an acetylen-dinitrogen monoxide flame is used. The principle consists in the acidification of a test portion with hydrochloric acid, aspiration of the solution into an acetylene-dinitrogen monoxide flame or acetylene-air flame. In the latter case, addition of lanthanum ions in order to suppress certain interferences. Measurement of the absorption of the 422.7-nm and 285.2-nm lines emitted by calcium and magnesium hollow-cathode lamps.

Životni ciklus

TRENUTNO

POVUČEN
ISO 3697:1976
95.99 Povučen
27. 5. 2002.

REVIDIRAN OD

NAPUŠTEN
ISO/CD 3697

Nacionalna preuzimanja

SRPS H.B8.673:1992  
ISS

Natrijum-hidroksid za industrijsku upotrebu - Određivanje sadržaja kalcijuma i magnezijuma - Metoda atomske apsorpcije

95.99   Povučen

H047 Saznaj više