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ISO 2717:1973

Sulphuric acid and oleum for industrial use — Determination of lead content — Dithizone photometric method
1. 12. 1973.
95.99   Povučen   27. 5. 2002.

Опште информације

95.99     27. 5. 2002.

ISO

ISO/TC 47

Međunarodni standard

71.060.30  

francuski   engleski  

Kupovina

Povučen

Jezik na kome želite da primite dokument.

Apstrakt

Applicable to the determination of contents exceeding 1 mg/kg. The principle bases on evaporation of the test portion, dissolution in hydrochloric acid and reduction by hydroxylammonium chloride. Formation of complexes of interferring elements with ammonium citrate and potassium cyanide. Extraction of the lead at a pH of between 8.5 and 10 by a solution of dithizone in chloroform. Elimination of excess dithizone by an ammoniacal solution of potassium cyanide. Photometric measurement in chloroform solution at a wavelength of about 520 nm. Has also been approved by the IUPAC.

Životni ciklus

TRENUTNO

POVUČEN
ISO 2717:1973
95.99 Povučen
27. 5. 2002.

Nacionalna preuzimanja

SRPS H.B8.017:1981  
ISS

Ispitivanje sumporne kiseline - Određivanje sadržaja olova - Fotometrijska metoda

95.99   Povučen

H047 Saznaj više