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 language | English |
|---|---|
| Pages (from-to) | 241-245 |
| Number of pages | 5 |
| Journal | Fresenius' Journal of Analytical Chemistry |
| Volume | 363 |
| Issue number | 3 |
| Publication status | Published - 1999 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Biochemistry
Cite this
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. / Masadome, Takashi; Imato, Toshihiko; Asano, Yasukazu.
In: Fresenius' Journal of Analytical Chemistry, Vol. 363, No. 3, 1999, p. 241-245.Research output: Contribution to journal › Article
}
TY - JOUR
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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UR - http://www.scopus.com/inward/citedby.url?scp=0001369492&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0001369492
VL - 363
SP - 241
EP - 245
JO - Fresenius Zeitschrift fur Analytische Chemie
JF - Fresenius Zeitschrift fur Analytische Chemie
SN - 0016-1152
IS - 3
ER -