title: The determination of nitrate and sulphate in 50% sodium hydroxide solution by ion-chromatography.
abstract: Electrolysis in combination with a cation-selective membrane is used to reduce the concentration of sodium hydroxide in the sample, prior to the ion-chromatographic determination of nitrate and sulphate. The advantage and disadvantage of this type of sample pretreatment are discussed.
authors.affiliation: Norsk Hydro Research Center, N-3900 Porsgrunn, Norway.
authors.forename: J M
authors.initials: JM
authors.lastname: Petersen
authors.forename: H G
authors.initials: HG
authors.lastname: Johnsen
authors.forename: W
authors.initials: W
authors.lastname: Lund