Norm

ISO 5993:1979 en

Sodium hydroxide for industrial use - Determination of mercury content - Flameless atomic absorption spectrometric method

31,57

Over deze norm

Status Definitief
Aantal pagina's 6
Gepubliceerd op 01-09-1979
Taal Engels
Covers a method applicable to liquid or solid products having mercury contents greater than 0,02 mg/kg. The principle of determination is based on oxidation of the mercury contained in a test portion to mercury(II) ions by potassium permanganate in the presence of sulphuric acid, reduction of the excess oxidant by hydroxylammonium chloride, reduction of the mercury(II) ions to mercury by tin(II) chloride, entrainment of the mercury in air or nitrogen, passage of the gaseous mixture through a measuring cell, and measurement of the absorption at a wavelength of 253,7 nm.

Details

ICS-code 71.060.40
Nederlandse titel Sodium hydroxide for industrial use - Determination of mercury content - Flameless atomic absorption spectrometric method
Engelse titel Sodium hydroxide for industrial use - Determination of mercury content - Flameless atomic absorption spectrometric method

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