<abstract xmlns="http://www.w3.org/1999/xhtml">In this work, the possibility of flow coulometry application as coulometric titration was studied. The method was used to analyze phosphates in wastewater samples. The principle of the determination consisted in the formation of molybdophosphate and its subsequent one-electron electrolytic reduction. The present method is applicable under optimal conditions in the concentration range of 1.5 × 10−6 to 5.5 × 10−5 mol/dm3. Detection limit of the method is 3.42 × 10−7 mol/dm3. Mineralization step has been proved a problem in total phosphate content determination. If mineralization was not carried out, only inorganic soluble phosphates were determined. It is a new method characterized by its simplicity of instrumentation and handling, which is a prerequisite for its further use in the field of trace analysis.</abstract>

In this work, the possibility of flow coulometry application as coulometric titration was studied. The method was used to analyze phosphates in wastewater samples. The principle of the determination consisted in the formation of molybdophosphate and its subsequent one-electron electrolytic reduction. The present method is applicable under optimal conditions in the concentration range of 1.5 × 10−6 to 5.5 × 10−5 mol/dm3. Detection limit of the method is 3.42 × 10−7 mol/dm3. Mineralization step has been proved a problem in total phosphate content determination. If mineralization was not carried out, only inorganic soluble phosphates were determined. It is a new method characterized by its simplicity of instrumentation and handling, which is a prerequisite for its further use in the field of trace analysis.

Determination of phosphate in water by flow coulometry

Faculty of Chemical and Food Technology Institute of Analytical Chemistry

Department of Chemistry, Faculty of Natural Sciences

University of SS. Cyril and Methodius in Trnava

Acta Chimica Slovaca

This work is licensed under the Creative Commons Attribution 4.0 Public License.

{"article-title":"Determination of phosphate in water by flow coulometry"}

In this work, the possibility of flow coulometry application as coulometric titration was studied. The method was used to analyze phosphates in wastewater...

Determination of phosphate in water by flow coulometry

Online veröffentlicht: 29. Juni 2020

Seitenbereich: 102 - 107

DOI: https://doi.org/10.2478/acs-2020-0015

Schlüsselwörter
coulometry, coulometric titration, phosphates, wastewater samples, porous electrode

© 2020 A. Manová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 Public License.

Determination of phosphate in water by flow coulometry

Online veröffentlicht: 29. Juni 2020

Seitenbereich: 102 - 107

DOI: https://doi.org/10.2478/acs-2020-0015

Schlüsselwörtercoulometry, coulometric titration, phosphates, wastewater samples, porous electrode

© 2020 A. Manová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 Public License.

Schlüsselwörter
coulometry, coulometric titration, phosphates, wastewater samples, porous electrode