Determination of sulfates in drinking water

Emilia Kirowa-Eisner*, Dora Tzur, Mordechai Brand, Chaim Yarnitzky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Sulfates in drinking water in the concentration range 20 μM to 20 mM are conductometrically titrated with the titrant Ba(OAc)2in the presence of ethanol. The titrations are performed in an automatic mode with monotonic addition (constant flow rate) of titrant. The titrations are preceded by a flow pretreatment of the samples, in which the interfering species Ca2+, Mg2+, and bicarbonates are removed. The pretreatment apparatus consists of two cation-exchange columns with conductometric probes at their exits and a thin-layer degassing device for removal of CO2. The advantages of tungsten in a two-electrode conductometric cell are demonstrated.

Original languageEnglish
Pages (from-to)40-52
Number of pages13
JournalMicrochemical Journal
Volume61
Issue number1
DOIs
StatePublished - 1999

Keywords

  • Conductometric titrations
  • Precipitation titrations
  • Sulfates

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