ISO 6382:1981

Withdrawn

General method for determination of silicon content Reduced molybdosilicate spectrophotometric method

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

21-02-2019

Language(s)

English, French

Published date

01-11-1981

Publisher

International Organization for Standardization

Specifies a method based on the depolymerization of any polymerized silica by treatment with sodium fluoride in the presence of hydrochloride acid resulting in the formation of the oxidized molycdosilicate, followed by the selective reduction of this complex in the presence of oxalic acid and in a sulphuric acid medium, and spectrophotometric measurement of the blue-coloured complex at the wavelength corresponding to maximum absorption (about 800 nm).

DevelopmentNote	Also numbered as BS 6337-2(1983) (09/2005)
DocumentType	Standard
Pages	5
PublisherName	International Organization for Standardization
Status	Withdrawn

Standards	Relationship
NFT 20 058 : 82 FD	Identical
NBN EN 1302 : 1999 COR 2002	Identical
NBN T 02 206 : 1982	Identical
PN ISO 6382 : 2000	Identical

BS EN 1302:1999	Chemicals used for treatment of water intended for human consumption. Aluminium-based coagulants. Analytical methods
EN 1302:1999/AC:2002	CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - ALUMINIUM-BASED COAGULANTS - ANALYTICAL METHODS