Potentiometric Titration of Polyhexamethylene Biguanide Hydrochloride with Potassium Poly(vinyl sulfate) Solution Using a Cationic Surfactant-selective Electrode

• MASADOME Takashi

  Department of Applied Chemistry, Faculty of Engineering, Shibaura Institute of Technology

• YAMAGISHI Yuichi

  Department of Applied Chemistry, Faculty of Engineering, Shibaura Institute of Technology

• TAKANO Masaki

  Department of Applied Chemistry, Faculty of Engineering, Shibaura Institute of Technology

• HATTORI Toshiaki

  Department of Materials Science, Toyohashi University of Technology

抄録

A potentiometric titration method using a cationic surfactant as an indicator cation and a plasticized poly(vinyl chloride) membrane electrode sensitive to the cationic surfactant is proposed for the determination of polyhexamethylene biguanide hydrochloride (PHMB-HCl), which is a cationic polyelectrolyte. A sample solution of PHMB-HCl containing an indicator cation (hexadecyltrimethylammonium ion, HTA) was titrated with a standard solution of an anionic polyelectrolyte, potassium poly(vinyl sulfate) (PVSK). The end-point was detected as a sharp potential change due to an abrupt decrease in the concentration of the indicator cation, HTA, which is caused by its association with PVSK. The effects of the concentrations of HTA ion and coexisting electrolytes in the sample solution on the degree of the potential change at the end-point were examined. A linear relationship between the concentration of PHMB-HCl and the end-point volume of the titrant exists in the concentration range from 2.0 × 10^-5 to 4.0 × 10^-4 M in the case that the concentration of HTA is 1.0 × 10^-5 M, and that from 1.0 × 10^-6 to 1.2 × 10^-5 M in the case that the concentration of HTA is 5.0 × 10^-6 M, respectively. The proposed method was applied to the determination of PHMB-HCl in some contact-lens detergents.

収録刊行物

• Analytical Sciences

  Analytical Sciences 24 (3), 415-418, 2008

  社団法人 日本分析化学会

キーワード

• Analytical Chemistry

詳細情報

• CRID: 1390282679234385152
• NII論文ID: 130004441638
• NII論文ID: 10021099288
• NII書誌ID: AA10500785
• DOI: 10.2116/analsci.24.415
• ISSN: 13482246
• ISSN: 09106340
• NDL書誌ID: 9417487
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9417487
• Web Site: https://link.springer.com/content/pdf/10.2116/analsci.24.415.pdf
• Web Site: https://link.springer.com/article/10.2116/analsci.24.415/fulltext.html
• Web Site: http://www.jstage.jst.go.jp/article/analsci/24/3/24_3_415/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可