ISO 6228:1980

Status : Published (Under review)

This standard was last reviewed and confirmed in 2022. Therefore this version remains current.

	Format	Language
std 1 61	PDF
std 2 61	Paper

CHF61

Convert Swiss francs (CHF) to your currency

Abstract

Describes a method based on prior conversion of the sulphur compounds in a test portion to sulphate, if required, and reduction of the sulphate ions ti hydrogen sulphide by a mixture of hydriodic and phosphinic acids in the presence of hydrochloric acid. The hydrogen sulphide is entrained in a current of nitrogen and absorbed in a solution of sodium hydroxide in aqueous acetone, followed by titration of the sulphide ions with standard volumetric mercury(II) acetate or nitrate solution in the presence of 1,5-diphenyl-3-thiocarbazone (dithiozone) as indicator.

General information

Status
: Published

Publication date
: 1980-11

Stage
: International Standard confirmed [90.93]
Edition
: 1

Number of pages
: 7
Technical Committee :
ISO/TC 47

ICS :
71.040.40
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