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ISO 2465:1974

Glycerols for industrial use — Determination of arsenic content — Silver diethyldithiocarbamate photometric method
1. 9. 1974.
95.99   Povučen   27. 5. 2002.

Опште информације

95.99     27. 5. 2002.

ISO

ISO/TC 47

Međunarodni standard

71.080.60  

francuski   engleski  

Kupovina

Povučen

Jezik na kome želite da primite dokument.

Apstrakt

The method is applicable tp products with a content greater than 0,1 mg/kg. It is applied to a test portion as it is, and to another identical portion with a known quantity of arsenic added. The principle consists in reduction of the arsenic by zinc in a hydrochloric acid medium, with the formation of arsine; absorption of the arsine in a solution of silver diethyldithiocarbamate in pyridine. Photometric measurement of the purplish-red colour produced by the colloidally dispersed silver at the maximum of the absorption curve at a wavelength of about 540 nm.

Životni ciklus

TRENUTNO

POVUČEN
ISO 2465:1974
95.99 Povučen
27. 5. 2002.

Nacionalna preuzimanja

SRPS ISO 2465:1992  
ISS

Glicerini za industrijsku upotrebu - Određivanje sadržaja arsena - Fotometrijska metoda sa srebro-dietilditiokarbamatom (identičan sa ISO 2465:1974)

95.99   Povučen

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