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Find out what cookies we use and how to disable themThis Standard describes a procedure for the determination of sulphide, i.e. the hydrogen sulphide ion concentration, in white, oxidized white and green liquors as well as in black liquor having a dry matter content up to 40 %. The determination also includes the sulphide part of any polysulphide present in the solution.
Note 1 to entry − If the dry matter content of the sample exceeds 40 %, the sample needs to be diluted with oxygen-free water (5.1) to a dry matter content around 20 %. The procedure can result in low results due to unintentional oxidation during the dilution.
Note 2 to entry − The Standard has not yet been tested for oxidized black liquors.
For the purposes of this document, the following terms and definitions apply.
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