End-point detection of the potentiometric titration of anionic polyelectrolytes using an anionic surfactant-selective plasticized poly (vinyl chloride) membrane electrode and an anionic surfactant as a marker ion

Takashi Masadome, Toshihiko Imato, Yasukazu Asano

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A plasticized poly (vinyl chloride) (PVC) membrane electrode sensitive to dodecylbenzenesulfonate (DBS) ion is applied to the determination of anionic poly-electrolytes such as potassium poly (vinyl sulfate) (PVSK) by potentiometric titration, using a poly (diallyldimethylammonium chloride) (Cat-floc) solution as a titrant. The end-point of the titration is detected as the potential jump of the plasticized PVC membrane electrode caused by decrease in the concentration of DBS ion added to the sample solution as a marker ion, due to the ion association reaction between the DBS ion and Cat-floe. The effects of the concentration of DBS ion, coexisting surfactants and electrolytes in the sample solution and pH of the sample on the degree of the potential jump at the end-point were examined. A linear relationship between the concentration of anionic poly electrolyte and the end-point volume of the titrant exists in the concentration range from 2 × 10-5 to 4 × 10-4 N for PVSK, alginate, and carrageenan.

Original languageEnglish
Pages (from-to)241-245
Number of pages5
JournalFresenius' Journal of Analytical Chemistry
Volume363
Issue number3
Publication statusPublished - 1999
Externally publishedYes

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Vinyl Chloride
Anionic surfactants
Polyelectrolytes
Titration
Ions
Membranes
Electrodes
Electrolytes
Polyvinyl Chloride
Carrageenan
Surface-Active Agents
Sulfates
Potassium
Association reactions

ASJC Scopus subject areas

  • Biochemistry

Cite this

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title = "End-point detection of the potentiometric titration of anionic polyelectrolytes using an anionic surfactant-selective plasticized poly (vinyl chloride) membrane electrode and an anionic surfactant as a marker ion",
abstract = "A plasticized poly (vinyl chloride) (PVC) membrane electrode sensitive to dodecylbenzenesulfonate (DBS) ion is applied to the determination of anionic poly-electrolytes such as potassium poly (vinyl sulfate) (PVSK) by potentiometric titration, using a poly (diallyldimethylammonium chloride) (Cat-floc) solution as a titrant. The end-point of the titration is detected as the potential jump of the plasticized PVC membrane electrode caused by decrease in the concentration of DBS ion added to the sample solution as a marker ion, due to the ion association reaction between the DBS ion and Cat-floe. The effects of the concentration of DBS ion, coexisting surfactants and electrolytes in the sample solution and pH of the sample on the degree of the potential jump at the end-point were examined. A linear relationship between the concentration of anionic poly electrolyte and the end-point volume of the titrant exists in the concentration range from 2 × 10-5 to 4 × 10-4 N for PVSK, alginate, and carrageenan.",
author = "Takashi Masadome and Toshihiko Imato and Yasukazu Asano",
year = "1999",
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journal = "Fresenius Zeitschrift fur Analytische Chemie",
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T1 - End-point detection of the potentiometric titration of anionic polyelectrolytes using an anionic surfactant-selective plasticized poly (vinyl chloride) membrane electrode and an anionic surfactant as a marker ion

AU - Masadome, Takashi

AU - Imato, Toshihiko

AU - Asano, Yasukazu

PY - 1999

Y1 - 1999

N2 - A plasticized poly (vinyl chloride) (PVC) membrane electrode sensitive to dodecylbenzenesulfonate (DBS) ion is applied to the determination of anionic poly-electrolytes such as potassium poly (vinyl sulfate) (PVSK) by potentiometric titration, using a poly (diallyldimethylammonium chloride) (Cat-floc) solution as a titrant. The end-point of the titration is detected as the potential jump of the plasticized PVC membrane electrode caused by decrease in the concentration of DBS ion added to the sample solution as a marker ion, due to the ion association reaction between the DBS ion and Cat-floe. The effects of the concentration of DBS ion, coexisting surfactants and electrolytes in the sample solution and pH of the sample on the degree of the potential jump at the end-point were examined. A linear relationship between the concentration of anionic poly electrolyte and the end-point volume of the titrant exists in the concentration range from 2 × 10-5 to 4 × 10-4 N for PVSK, alginate, and carrageenan.

AB - A plasticized poly (vinyl chloride) (PVC) membrane electrode sensitive to dodecylbenzenesulfonate (DBS) ion is applied to the determination of anionic poly-electrolytes such as potassium poly (vinyl sulfate) (PVSK) by potentiometric titration, using a poly (diallyldimethylammonium chloride) (Cat-floc) solution as a titrant. The end-point of the titration is detected as the potential jump of the plasticized PVC membrane electrode caused by decrease in the concentration of DBS ion added to the sample solution as a marker ion, due to the ion association reaction between the DBS ion and Cat-floe. The effects of the concentration of DBS ion, coexisting surfactants and electrolytes in the sample solution and pH of the sample on the degree of the potential jump at the end-point were examined. A linear relationship between the concentration of anionic poly electrolyte and the end-point volume of the titrant exists in the concentration range from 2 × 10-5 to 4 × 10-4 N for PVSK, alginate, and carrageenan.

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VL - 363

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